Solar Radio, Magnetometry and Spectroscopy

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CaK 600mm FL full-disk SHG image -- with stacking!

Last post by fulvio.mete « Sun Jun 26, 2022 9:07 pm
Replies: 5
by thesmiths » Tue Jun 21, 2022 8:23 pm

Rating: 3.43%

5 Replies

120 Views

Last post by fulvio.mete
Sun Jun 26, 2022 9:07 pm
the big prominence and eruptive emission within...(june 23rd)

Last post by highfnum « Fri Jun 24, 2022 8:13 pm
Replies: 9
by ChrisHalpha2017 » Thu Jun 23, 2022 8:56 am

Rating: 7.35%

9 Replies

157 Views

Last post by highfnum
Fri Jun 24, 2022 8:13 pm
some open slit photo - videos

Last post by ChrisHalpha2017 « Thu Jun 23, 2022 8:41 pm
Replies: 4
by highfnum » Tue Jun 21, 2022 2:29 pm

Rating: 0.98%

4 Replies

102 Views

Last post by ChrisHalpha2017
Thu Jun 23, 2022 8:41 pm
H-beta, H-alpha, CaH high-resolution SHG images, June 22

Last post by thesmiths « Thu Jun 23, 2022 7:55 pm
Replies: 6
by thesmiths » Wed Jun 22, 2022 9:03 pm

Rating: 2.45%

6 Replies

93 Views

Last post by thesmiths
Thu Jun 23, 2022 7:55 pm
eruption this morning June 21st 2022

Last post by marktownley « Thu Jun 23, 2022 7:51 pm
Replies: 1
by ChrisHalpha2017 » Tue Jun 21, 2022 9:01 pm

Rating: 1.96%

1 Replies

46 Views

Last post by marktownley
Thu Jun 23, 2022 7:51 pm
proms of June 17th 18th and ...19th...

Last post by marktownley « Tue Jun 21, 2022 6:32 pm
Replies: 3
by ChrisHalpha2017 » Mon Jun 20, 2022 7:58 pm

Rating: 1.96%

3 Replies

73 Views

Last post by marktownley
Tue Jun 21, 2022 6:32 pm
H-alpha and CaK full-disk SHG images -- plus CaK proms

Last post by ChrisHalpha2017 « Mon Jun 20, 2022 8:00 pm
Replies: 9
by thesmiths » Wed Jun 15, 2022 7:54 pm

Rating: 2.45%

9 Replies

228 Views

Last post by ChrisHalpha2017
Mon Jun 20, 2022 8:00 pm
H-beta and H-alpha, full-disk SHG at 700mm FL (and a big ejection)

Last post by Montana « Sun Jun 19, 2022 2:20 pm
Replies: 6
by thesmiths » Fri Jun 17, 2022 7:37 pm

Rating: 3.43%

6 Replies

144 Views

Last post by Montana
Sun Jun 19, 2022 2:20 pm
proms of today June 16th 2022...evolution and comparison

Last post by ChrisHalpha2017 « Fri Jun 17, 2022 9:35 am
Replies: 3
by ChrisHalpha2017 » Thu Jun 16, 2022 4:34 pm

Rating: 2.45%

3 Replies

72 Views

Last post by ChrisHalpha2017
Fri Jun 17, 2022 9:35 am
beautiffull prom this morning June 16th

Last post by ChrisHalpha2017 « Fri Jun 17, 2022 5:30 am
Replies: 8
by ChrisHalpha2017 » Thu Jun 16, 2022 9:17 am

Rating: 6.86%

8 Replies

116 Views

Last post by ChrisHalpha2017
Fri Jun 17, 2022 5:30 am
22May2022 Spectroheliograms - Part 2 - Fraunhofer Four

Last post by p_zetner « Fri Jun 17, 2022 2:51 am
Replies: 3
by p_zetner » Thu Jun 16, 2022 2:26 am

Rating: 1.96%

3 Replies

103 Views

Last post by p_zetner
Fri Jun 17, 2022 2:51 am
Request for SHG owners

Last post by ChrisHalpha2017 « Thu Jun 16, 2022 4:49 pm
Replies: 16
by ChrisHalpha2017 » Fri Jun 10, 2022 10:48 am

Rating: 5.39%

16 Replies

259 Views

Last post by ChrisHalpha2017
Thu Jun 16, 2022 4:49 pm
Minor G1 Geomagnetic Storm 15th June 2022

Last post by Montana « Thu Jun 16, 2022 10:49 am
Replies: 1
by Carbon60 » Wed Jun 15, 2022 8:45 pm

Rating: 1.47%

1 Replies

44 Views

Last post by Montana
Thu Jun 16, 2022 10:49 am
Daytime Arietid results 2022

Last post by rsfoto « Wed Jun 15, 2022 10:40 pm
Replies: 11
by Wyvern » Sun Jun 12, 2022 8:22 pm

Rating: 2.94%

11 Replies

161 Views

Last post by rsfoto
Wed Jun 15, 2022 10:40 pm
Improved full-disk SHG H-alpha imaging at 700mm FL

Last post by thesmiths « Wed Jun 15, 2022 7:14 pm
Replies: 7
by thesmiths » Wed Jun 15, 2022 12:22 am

Rating: 1.96%

7 Replies

139 Views

Last post by thesmiths
Wed Jun 15, 2022 7:14 pm
Thermal testing of 9mm-wide fused quartz SHG slit

Last post by thesmiths « Tue Jun 14, 2022 4:59 pm
Replies: 5
by thesmiths » Thu Jun 09, 2022 2:09 pm

Rating: 0.98%

5 Replies

181 Views

Last post by thesmiths
Tue Jun 14, 2022 4:59 pm
proms of sunday June 12th

Last post by ChrisHalpha2017 « Mon Jun 13, 2022 8:18 am
Replies: 6
by ChrisHalpha2017 » Sun Jun 12, 2022 5:25 pm

Rating: 4.9%

6 Replies

101 Views

Last post by ChrisHalpha2017
Mon Jun 13, 2022 8:18 am
22May2022 Spectroheliograms - Part 1 - Halpha

Last post by Montana « Mon Jun 13, 2022 7:26 am
Replies: 5
by p_zetner » Tue May 31, 2022 10:37 pm

Rating: 2.94%

5 Replies

177 Views

Last post by Montana
Mon Jun 13, 2022 7:26 am
prom of today June 10th 2022

Last post by Montana « Mon Jun 13, 2022 7:25 am
Replies: 6
by ChrisHalpha2017 » Fri Jun 10, 2022 12:55 pm

Rating: 5.39%

6 Replies

132 Views

Last post by Montana
Mon Jun 13, 2022 7:25 am
First full-disk SHG image at 700mm FL with new chrome-on-quartz slit

Last post by Montana « Mon Jun 13, 2022 7:24 am
Replies: 2
by thesmiths » Sat Jun 11, 2022 1:04 am

Rating: 1.47%

2 Replies

111 Views

Last post by Montana
Mon Jun 13, 2022 7:24 am
from later jun 9 SHG and open slit

Last post by Montana « Mon Jun 13, 2022 7:20 am
Replies: 4
by highfnum » Fri Jun 10, 2022 7:58 am

Rating: 2.94%

4 Replies

90 Views

Last post by Montana
Mon Jun 13, 2022 7:20 am
prom of the day June 9th 2022....

Last post by Montana « Mon Jun 13, 2022 7:18 am
Replies: 5
by ChrisHalpha2017 » Thu Jun 09, 2022 8:49 pm

Rating: 5.39%

5 Replies

100 Views

Last post by Montana
Mon Jun 13, 2022 7:18 am
Custom-made fused quartz slits for SHG -- 9 micron x 12 mm

Last post by p_zetner « Sat Jun 11, 2022 4:37 pm
Replies: 6
by thesmiths » Thu Jun 09, 2022 12:04 am

Rating: 2.94%

6 Replies

183 Views

Last post by p_zetner
Sat Jun 11, 2022 4:37 pm
Detection of Zeeman effect on AR 3014

Last post by fulvio.mete « Fri Jun 10, 2022 7:36 pm
Replies: 9
by fulvio.mete » Fri May 20, 2022 8:13 pm

Rating: 2.45%

9 Replies

228 Views

Last post by fulvio.mete
Fri Jun 10, 2022 7:36 pm
proms of June 7th and 8th

Last post by ChrisHalpha2017 « Thu Jun 09, 2022 8:45 pm
Replies: 12
by ChrisHalpha2017 » Wed Jun 08, 2022 1:57 pm

Rating: 7.35%

12 Replies

164 Views

Last post by ChrisHalpha2017
Thu Jun 09, 2022 8:45 pm
73P/Schwassmann-Wachmann meteor shower

Last post by rsfoto « Thu Jun 09, 2022 2:06 pm
Replies: 14
by rsfoto » Mon May 30, 2022 2:28 pm

Rating: 11.76%

14 Replies

264 Views

Last post by rsfoto
Thu Jun 09, 2022 2:06 pm
Ha spectroheliogram of today

Last post by fulvio.mete « Thu Jun 09, 2022 10:13 am
Replies: 3
by fulvio.mete » Wed Jun 08, 2022 5:06 pm

Rating: 2.94%

3 Replies

89 Views

Last post by fulvio.mete
Thu Jun 09, 2022 10:13 am
UK Magnetometer back in service- June 5th 2022

Last post by fulvio.mete « Tue Jun 07, 2022 7:31 pm
Replies: 4
by Carbon60 » Mon Jun 06, 2022 9:03 am

Rating: 1.47%

4 Replies

95 Views

Last post by fulvio.mete
Tue Jun 07, 2022 7:31 pm
June 6th 2022 observation in the morning

Last post by fulvio.mete « Mon Jun 06, 2022 7:39 pm
Replies: 8
by ChrisHalpha2017 » Mon Jun 06, 2022 9:24 am

Rating: 8.82%

8 Replies

162 Views

Last post by fulvio.mete
Mon Jun 06, 2022 7:39 pm
prom of the day JUNE 2nd, 2022 with spectro coronograph

Last post by Montana « Fri Jun 03, 2022 6:33 pm
Replies: 2
by ChrisHalpha2017 » Thu Jun 02, 2022 9:29 pm

Rating: 2.45%

2 Replies

125 Views

Last post by Montana
Fri Jun 03, 2022 6:33 pm
my first attempt at open slit method

Last post by fulvio.mete « Wed Jun 01, 2022 7:02 pm
Replies: 4
by highfnum » Sun May 29, 2022 3:37 pm

Rating: 1.47%

4 Replies

159 Views

Last post by fulvio.mete
Wed Jun 01, 2022 7:02 pm
prom of last sunday 29th May 2022 with spectro coronograph

Last post by Montana « Wed Jun 01, 2022 6:54 am
Replies: 2
by ChrisHalpha2017 » Tue May 31, 2022 9:41 am

Rating: 1.47%

2 Replies

71 Views

Last post by Montana
Wed Jun 01, 2022 6:54 am
prom and eruption from yesterday friday may 27th

Last post by Montana « Mon May 30, 2022 4:47 pm
Replies: 2
by ChrisHalpha2017 » Sat May 28, 2022 11:07 am

Rating: 4.41%

2 Replies

120 Views

Last post by Montana
Mon May 30, 2022 4:47 pm
SHG partial scans Ha and CaK

Last post by Montana « Fri May 27, 2022 9:12 am
Replies: 4
by highfnum » Tue May 24, 2022 9:58 am

Rating: 1.47%

4 Replies

138 Views

Last post by Montana
Fri May 27, 2022 9:12 am
session of May 21st 2022

Last post by Montana « Fri May 27, 2022 7:11 am
Replies: 5
by ChrisHalpha2017 » Mon May 23, 2022 10:41 am

Rating: 3.43%

5 Replies

130 Views

Last post by Montana
Fri May 27, 2022 7:11 am
huge prominence yesterday May 18th 2022

Last post by p_zetner « Fri May 20, 2022 8:57 pm
Replies: 8
by ChrisHalpha2017 » Thu May 19, 2022 7:53 am

Rating: 6.86%

8 Replies

175 Views

Last post by p_zetner
Fri May 20, 2022 8:57 pm
proms May 15th and 16th with spectro in Littrow mode

Last post by ChrisHalpha2017 « Thu May 19, 2022 8:00 am
Replies: 5
by ChrisHalpha2017 » Mon May 16, 2022 10:44 pm

Rating: 3.43%

5 Replies

133 Views

Last post by ChrisHalpha2017
Thu May 19, 2022 8:00 am
proms of the day May 17th and forgotten from yesterday

Last post by fulvio.mete « Wed May 18, 2022 3:24 pm
Replies: 5
by ChrisHalpha2017 » Tue May 17, 2022 8:15 pm

Rating: 1.96%

5 Replies

113 Views

Last post by fulvio.mete
Wed May 18, 2022 3:24 pm
Halpha spectroheliogram of today

Last post by fulvio.mete « Tue May 17, 2022 6:56 pm
Replies: 3
by fulvio.mete » Mon May 16, 2022 7:38 pm

Rating: 0.98%

3 Replies

107 Views

Last post by fulvio.mete
Tue May 17, 2022 6:56 pm
H alpha spectroheliograms comparison

Last post by marktownley « Mon May 16, 2022 7:23 pm
Replies: 4
by fulvio.mete » Wed May 11, 2022 3:48 pm

Rating: 1.47%

4 Replies

191 Views

Last post by marktownley
Mon May 16, 2022 7:23 pm
Surplus Shed Optical Slit

Last post by highfnum « Thu May 12, 2022 3:39 pm
Replies: 4
by Bob Yoesle » Wed Mar 30, 2022 5:26 pm

Rating: 1.47%

4 Replies

239 Views

Last post by highfnum
Thu May 12, 2022 3:39 pm
Eta Aquarids 2022

Last post by Wyvern « Wed May 11, 2022 8:37 pm
Replies: 1
by rsfoto » Wed May 11, 2022 4:03 pm

Rating: 1.96%

1 Replies

64 Views

Last post by Wyvern
Wed May 11, 2022 8:37 pm
SHG cak and spectrum prom line

Last post by fulvio.mete « Wed May 11, 2022 12:07 pm
Replies: 4
by highfnum » Tue May 10, 2022 10:54 am

Rating: 1.47%

4 Replies

123 Views

Last post by fulvio.mete
Wed May 11, 2022 12:07 pm
Krypton line - spectroscopy

Last post by p_zetner « Thu May 05, 2022 3:39 pm
Replies: 14
by Montana » Tue May 03, 2022 11:30 am

Rating: 6.86%

14 Replies

420 Views

Last post by p_zetner
Thu May 05, 2022 3:39 pm
H alpha spectroheliograms of today

Last post by fulvio.mete « Wed May 04, 2022 2:28 pm
Replies: 6
by fulvio.mete » Wed Apr 27, 2022 5:20 pm

Rating: 1.47%

6 Replies

243 Views

Last post by fulvio.mete
Wed May 04, 2022 2:28 pm
Start your engines ... Lyrids 2022 are coming

Last post by marktownley « Sun May 01, 2022 11:14 am
Replies: 6
by rsfoto » Thu Apr 21, 2022 4:14 pm

Rating: 5.88%

6 Replies

270 Views

Last post by marktownley
Sun May 01, 2022 11:14 am
specgrams Ha vs Hbeta

Last post by highfnum « Wed Apr 27, 2022 11:19 pm
Replies: 7
by highfnum » Fri Apr 22, 2022 10:31 pm

Rating: 2.45%

7 Replies

229 Views

Last post by highfnum
Wed Apr 27, 2022 11:19 pm
Spectroheliography in UV light

Last post by fulvio.mete « Tue Apr 26, 2022 5:58 pm
Replies: 7
by fulvio.mete » Fri Apr 22, 2022 5:23 pm

Rating: 1.96%

7 Replies

243 Views

Last post by fulvio.mete
Tue Apr 26, 2022 5:58 pm
Spectroheliography in CN light

Last post by fulvio.mete « Tue Apr 26, 2022 9:10 am
Replies: 12
by fulvio.mete » Sun Apr 24, 2022 2:40 pm

Rating: 4.41%

12 Replies

284 Views

Last post by fulvio.mete
Tue Apr 26, 2022 9:10 am
CaII H spectroheliogram

Last post by p_zetner « Mon Apr 25, 2022 7:50 pm
Replies: 7
by fulvio.mete » Mon Apr 25, 2022 7:47 am

Rating: 1.96%

7 Replies

184 Views

Last post by p_zetner
Mon Apr 25, 2022 7:50 pm
Comments on Solar Radio Astronomy

Last post by p_zetner « Wed Apr 20, 2022 1:08 am
Replies: 6
by p_zetner » Sun Apr 17, 2022 9:25 pm

Rating: 4.9%

6 Replies

294 Views

Last post by p_zetner
Wed Apr 20, 2022 1:08 am
How to start in Solar Radio? Radio astronomy in general?

Last post by rsfoto « Sun Apr 17, 2022 6:01 pm
Replies: 17
by MalVeauX » Mon Apr 11, 2022 2:19 pm

Rating: 8.82%

17 Replies

513 Views

Last post by rsfoto
Sun Apr 17, 2022 6:01 pm
shg Ha caK

Last post by p_zetner « Sun Apr 17, 2022 3:03 am
Replies: 4
by highfnum » Fri Apr 15, 2022 6:47 pm

Rating: 2.94%

4 Replies

160 Views

Last post by p_zetner
Sun Apr 17, 2022 3:03 am
G3 Geomagnetic Storm April 10th 2022

Last post by Carbon60 « Tue Apr 12, 2022 5:59 am
Replies: 4
by Carbon60 » Sun Apr 10, 2022 3:07 pm

Rating: 1.96%

4 Replies

148 Views

Last post by Carbon60
Tue Apr 12, 2022 5:59 am
G1 Geomagnetic Storm 31st March 2022

Last post by Carbon60 « Tue Apr 05, 2022 3:51 pm
Replies: 5
by Carbon60 » Thu Mar 31, 2022 7:04 am

Rating: 1.47%

5 Replies

313 Views

Last post by Carbon60
Tue Apr 05, 2022 3:51 pm
Spectroheliograms recorded last summer.

Last post by marktownley « Sun Apr 03, 2022 10:15 am
Replies: 10
by p_zetner » Fri Mar 18, 2022 3:22 pm

Rating: 9.31%

10 Replies

551 Views

Last post by marktownley
Sun Apr 03, 2022 10:15 am
Rainer's quest to build a magnetometer

Last post by rsfoto « Sat Apr 02, 2022 3:26 pm
Replies: 46
by Carbon60 » Tue Mar 15, 2022 4:14 pm
1

2
Rating: 7.84%
46 Replies

1581 Views

Last post by rsfoto
Sat Apr 02, 2022 3:26 pm
G2 Geomagnetic Storm (CME Impact) 13th-14th March 2022

Last post by rsfoto « Fri Mar 18, 2022 8:31 pm
Replies: 9
by Carbon60 » Mon Mar 14, 2022 7:49 am

Rating: 8.33%

9 Replies

462 Views

Last post by rsfoto
Fri Mar 18, 2022 8:31 pm
Dipping my Toe into Spectroscopy

Last post by Merlin66 « Mon Mar 14, 2022 12:21 am
Replies: 24
by Carbon60 » Thu Mar 03, 2022 9:05 am

Rating: 14.71%

24 Replies

1093 Views

Last post by Merlin66
Mon Mar 14, 2022 12:21 am
G1 Geomagnetic Storms 5th - 6th March 2022

Last post by Carbon60 « Mon Mar 07, 2022 4:41 pm
Replies: 3
by Carbon60 » Sun Mar 06, 2022 3:55 pm

Rating: 2.45%

3 Replies

248 Views

Last post by Carbon60
Mon Mar 07, 2022 4:41 pm
G1 Geomagnetic Storm 20th Feb 2022

Last post by marktownley « Thu Feb 24, 2022 7:59 am
Replies: 7
by Carbon60 » Sun Feb 20, 2022 7:35 pm

Rating: 3.92%

7 Replies

426 Views

Last post by marktownley
Thu Feb 24, 2022 7:59 am
CME and Geoeffective Wake 9th - 11th Feb 2022

Last post by Carbon60 « Sun Feb 13, 2022 6:27 am
Replies: 4
by Carbon60 » Fri Feb 11, 2022 7:56 am

Rating: 2.45%

4 Replies

475 Views

Last post by Carbon60
Sun Feb 13, 2022 6:27 am
CME and Geoeffective Wake 5th Feb 2022

Last post by Carbon60 « Fri Feb 11, 2022 7:43 am
Replies: 10
by Carbon60 » Sat Feb 05, 2022 10:13 am

Rating: 6.37%

10 Replies

492 Views

Last post by Carbon60
Fri Feb 11, 2022 7:43 am
Weak CME Impact 1st-2nd Feb 2022-Updated

Last post by Montana « Fri Feb 04, 2022 8:18 am
Replies: 13
by Carbon60 » Wed Feb 02, 2022 11:32 am

Rating: 7.84%

13 Replies

499 Views

Last post by Montana
Fri Feb 04, 2022 8:18 am
Found the next challenge! CN wavelength

Last post by marktownley « Tue Feb 01, 2022 7:56 pm
Replies: 15
by Merlin66 » Sat Jan 15, 2022 4:39 am

Rating: 7.35%

15 Replies

780 Views

Last post by marktownley
Tue Feb 01, 2022 7:56 pm
Doppler Image Jan 30

Last post by p_zetner « Sun Jan 30, 2022 10:06 pm
Replies: 8
by PDB » Sun Jan 30, 2022 2:26 pm

Rating: 2.94%

8 Replies

427 Views

Last post by p_zetner
Sun Jan 30, 2022 10:06 pm
Stellafane SHS - early imaging result

Last post by mconsidine « Sun Jan 30, 2022 9:14 pm
Replies: 5
by mconsidine » Thu Aug 19, 2021 5:43 pm

Rating: 2.94%

5 Replies

737 Views

Last post by mconsidine
Sun Jan 30, 2022 9:14 pm
20Jun2017 Spectroheliograms: Cleaning House!

Last post by christian viladrich « Sat Jan 29, 2022 9:05 pm
Replies: 5
by p_zetner » Sat Dec 30, 2017 5:20 pm

5 Replies

3217 Views

Last post by christian viladrich
Sat Jan 29, 2022 9:05 pm
Quadrantids - 2022

Last post by Wyvern « Mon Jan 24, 2022 7:51 pm
Replies: 3
by Wyvern » Sun Jan 23, 2022 1:23 pm

Rating: 3.43%

3 Replies

296 Views

Last post by Wyvern
Mon Jan 24, 2022 7:51 pm
A string of storms 18th Jan 2022

Last post by Carbon60 « Thu Jan 20, 2022 7:33 am
Replies: 4
by Carbon60 » Tue Jan 18, 2022 9:45 am

Rating: 2.94%

4 Replies

311 Views

Last post by Carbon60
Thu Jan 20, 2022 7:33 am
Unexpected G2 Geomagnetic Storm

Last post by Carbon60 « Wed Jan 19, 2022 12:14 pm
Replies: 10
by Carbon60 » Sat Jan 15, 2022 12:31 pm

Rating: 5.88%

10 Replies

469 Views

Last post by Carbon60
Wed Jan 19, 2022 12:14 pm
CaH and continuum SHG images (resolution upgrade)

Last post by Merlin66 « Wed Jan 12, 2022 8:00 am
Replies: 5
by thesmiths » Tue Jan 11, 2022 1:25 am

Rating: 1.96%

5 Replies

464 Views

Last post by Merlin66
Wed Jan 12, 2022 8:00 am
G1 Geomagnetic Storm 8th January 2022

Last post by Carbon60 « Tue Jan 11, 2022 12:28 pm
Replies: 4
by Carbon60 » Sun Jan 09, 2022 8:37 am

Rating: 1.47%

4 Replies

345 Views

Last post by Carbon60
Tue Jan 11, 2022 12:28 pm
and there go the Ursids!!!

Last post by Wyvern « Thu Jan 06, 2022 3:22 pm
Replies: 25
by Wyvern » Sun Dec 26, 2021 6:22 pm
1

2
Rating: 13.24%
25 Replies

981 Views

Last post by Wyvern
Thu Jan 06, 2022 3:22 pm
Geomagnetic summary for 2021 vs 2020

Last post by Carbon60 « Tue Jan 04, 2022 7:47 pm
Replies: 3
by Carbon60 » Sun Jan 02, 2022 4:22 pm

Rating: 1.96%

3 Replies

287 Views

Last post by Carbon60
Tue Jan 04, 2022 7:47 pm
Mg (b2) absorption line

Last post by Merlin66 « Sat Jan 01, 2022 9:06 pm
Replies: 3
by Merlin66 » Sat Jan 01, 2022 3:45 am

Rating: 1.47%

3 Replies

285 Views

Last post by Merlin66
Sat Jan 01, 2022 9:06 pm
G1 Geomagnetic Storm 19th Dec 2021

Last post by MapleRidge « Thu Dec 23, 2021 11:52 pm
Replies: 4
by Carbon60 » Mon Dec 20, 2021 5:48 pm

Rating: 2.45%

4 Replies

406 Views

Last post by MapleRidge
Thu Dec 23, 2021 11:52 pm
Geminids 2021 December 14th

Last post by rsfoto « Sun Dec 19, 2021 4:35 pm
Replies: 15
by rsfoto » Sat Dec 11, 2021 7:07 pm

Rating: 14.22%

15 Replies

717 Views

Last post by rsfoto
Sun Dec 19, 2021 4:35 pm
Geomagnetic Unrest 10th-11th December 2021

Last post by marktownley « Mon Dec 13, 2021 10:10 am
Replies: 2
by Carbon60 » Sun Dec 12, 2021 3:16 pm

Rating: 1.96%

2 Replies

262 Views

Last post by marktownley
Mon Dec 13, 2021 10:10 am
A new SHG using a cheap 300mm f5.6 lens

Last post by Montana « Mon Dec 06, 2021 2:41 pm
Replies: 1
by thesmiths » Sun Dec 05, 2021 7:35 pm

Rating: 1.47%

1 Replies

393 Views

Last post by Montana
Mon Dec 06, 2021 2:41 pm
Minor CME and Solar Wind Driven Geomagnetic Unrest 29th November 2021

Last post by marktownley « Sun Dec 05, 2021 9:40 am
Replies: 3
by Carbon60 » Mon Nov 29, 2021 8:48 am

Rating: 2.45%

3 Replies

282 Views

Last post by marktownley
Sun Dec 05, 2021 9:40 am
H-alpha and CaH SHG comparison

Last post by marktownley « Sun Dec 05, 2021 9:35 am
Replies: 3
by thesmiths » Sun Nov 28, 2021 8:14 pm

Rating: 1.96%

3 Replies

325 Views

Last post by marktownley
Sun Dec 05, 2021 9:35 am
Leonids 2021

Last post by Carbon60 « Tue Nov 30, 2021 3:36 pm
Replies: 9
by rsfoto » Thu Nov 18, 2021 2:47 pm

Rating: 7.35%

9 Replies

510 Views

Last post by Carbon60
Tue Nov 30, 2021 3:36 pm
Filament structure and protuberances in CaH with SHG

Last post by marktownley « Sat Nov 27, 2021 7:58 am
Replies: 7
by thesmiths » Fri Nov 26, 2021 12:22 am

Rating: 6.37%

7 Replies

468 Views

Last post by marktownley
Sat Nov 27, 2021 7:58 am
Big filaments in H-alpha with SHG at 700mm FL

Last post by Merlin66 « Thu Nov 25, 2021 10:28 pm
Replies: 8
by thesmiths » Tue Nov 23, 2021 7:51 pm

Rating: 4.41%

8 Replies

507 Views

Last post by Merlin66
Thu Nov 25, 2021 10:28 pm
Another comparison of CaK SHG and PST -- looking for filaments

Last post by Montana « Tue Nov 23, 2021 8:21 am
Replies: 3
by thesmiths » Mon Nov 22, 2021 5:07 pm

Rating: 1.47%

3 Replies

325 Views

Last post by Montana
Tue Nov 23, 2021 8:21 am
Echelle spectrograph images -- in colour

Last post by Montana « Mon Nov 22, 2021 8:01 am
Replies: 2
by thesmiths » Mon Nov 22, 2021 12:51 am

Rating: 2.45%

2 Replies

295 Views

Last post by Montana
Mon Nov 22, 2021 8:01 am
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Last post by Carbon60 « Sat Nov 20, 2021 2:57 pm
Replies: 4
by Carbon60 » Tue Nov 16, 2021 7:42 am

Rating: 3.92%

4 Replies

339 Views

Last post by Carbon60
Sat Nov 20, 2021 2:57 pm
My new short D_SHG

Last post by marktownley « Sat Nov 20, 2021 2:35 pm
Replies: 7
by MERRILL » Mon Nov 15, 2021 2:34 am

Rating: 3.43%

7 Replies

474 Views

Last post by marktownley
Sat Nov 20, 2021 2:35 pm
Sol"Ex 3D printed SHG - AAVSO presentation

Last post by marktownley « Sat Nov 20, 2021 2:33 pm
Replies: 2
by Merlin66 » Tue Nov 16, 2021 9:52 pm

Rating: 0.98%

2 Replies

290 Views

Last post by marktownley
Sat Nov 20, 2021 2:33 pm
Radio Meteor detection 09-11-2021

Last post by Carbon60 « Wed Nov 10, 2021 6:15 pm
Replies: 2
by rsfoto » Tue Nov 09, 2021 7:36 pm

Rating: 1.96%

2 Replies

321 Views

Last post by Carbon60
Wed Nov 10, 2021 6:15 pm
H-alpha SHG at 910mm focal length

Last post by thesmiths « Mon Nov 08, 2021 1:47 pm
Replies: 3
by thesmiths » Sun Nov 07, 2021 11:10 pm

Rating: 1.47%

3 Replies

429 Views

Last post by thesmiths
Mon Nov 08, 2021 1:47 pm
G3 Geomagnetic Storm

Last post by marktownley « Sun Nov 07, 2021 5:39 pm
Replies: 12
by Carbon60 » Thu Nov 04, 2021 8:01 am

Rating: 6.86%

12 Replies

534 Views

Last post by marktownley
Sun Nov 07, 2021 5:39 pm
Ca-H images taken with a 1200 l/mm grating and 300mm Canon lens

Last post by marktownley « Sun Nov 07, 2021 11:58 am
Replies: 3
by thesmiths » Fri Nov 05, 2021 10:41 pm

Rating: 2.45%

3 Replies

384 Views

Last post by marktownley
Sun Nov 07, 2021 11:58 am
G1 Geomagnetic storm 31st October 2021

Last post by marktownley « Wed Nov 03, 2021 8:46 pm
Replies: 9
by Carbon60 » Mon Nov 01, 2021 9:48 am

Rating: 5.39%

9 Replies

514 Views

Last post by marktownley
Wed Nov 03, 2021 8:46 pm
Minor CME impact 30th/31st October 2021

Last post by Carbon60 « Wed Nov 03, 2021 6:06 am
Replies: 6
by Carbon60 » Sun Oct 31, 2021 10:16 am

Rating: 3.43%

6 Replies

377 Views

Last post by Carbon60
Wed Nov 03, 2021 6:06 am
MiniSHG - Sun in Helium D3

Last post by marktownley « Tue Nov 02, 2021 9:12 pm
Replies: 2
by Merlin66 » Sun Oct 31, 2021 4:14 am

Rating: 1.96%

2 Replies

297 Views

Last post by marktownley
Tue Nov 02, 2021 9:12 pm
Magnetometer sampling

Last post by Carbon60 « Mon Nov 01, 2021 7:48 am
Replies: 3
by SimonM » Sun Oct 31, 2021 1:10 pm

3 Replies

330 Views

Last post by Carbon60
Mon Nov 01, 2021 7:48 am
So what's the chances of another Aurora on Sunday-Monday Stu ??

Last post by EGRAY_OBSERVATORY « Sun Oct 31, 2021 6:16 pm

by EGRAY_OBSERVATORY » Sun Oct 31, 2021 6:16 pm

0 Replies

184 Views

Last post by EGRAY_OBSERVATORY
Sun Oct 31, 2021 6:16 pm
Orionids 2021 results

Last post by rsfoto « Fri Oct 29, 2021 3:24 pm
Replies: 3
by Wyvern » Thu Oct 28, 2021 9:49 pm

Rating: 1.47%

3 Replies

317 Views

Last post by rsfoto
Fri Oct 29, 2021 3:24 pm
Arids Meteor shower + Mexican stations :-)

Last post by marktownley « Thu Oct 28, 2021 8:12 pm
Replies: 3
by rsfoto » Wed Oct 27, 2021 6:17 pm

Rating: 2.94%

3 Replies

308 Views

Last post by marktownley
Thu Oct 28, 2021 8:12 pm
CME Impact 12th October 2021- UPDATED

Last post by marktownley « Thu Oct 28, 2021 9:08 am
Replies: 12
by Carbon60 » Tue Oct 12, 2021 9:04 am

Rating: 5.39%

12 Replies

905 Views

Last post by marktownley
Thu Oct 28, 2021 9:08 am
MiniSHG - H alpha and CaK

Last post by marktownley « Tue Oct 12, 2021 7:32 pm
Replies: 6
by Merlin66 » Sat Oct 09, 2021 10:55 pm

Rating: 1.96%

6 Replies

532 Views

Last post by marktownley
Tue Oct 12, 2021 7:32 pm
"Heads up" on possible meteor activity.

Last post by Carbon60 « Sun Oct 10, 2021 6:48 am
Replies: 12
by Wyvern » Sun Oct 03, 2021 4:58 pm

Rating: 11.27%

12 Replies

737 Views

Last post by Carbon60
Sun Oct 10, 2021 6:48 am
Geomagnetic Unrest 30th Sept.-2nd Oct. 2021

Last post by Carbon60 « Mon Oct 04, 2021 4:07 pm
Replies: 3
by Carbon60 » Sat Oct 02, 2021 3:34 pm

Rating: 2.45%

3 Replies

312 Views

Last post by Carbon60
Mon Oct 04, 2021 4:07 pm
MiniSHG with Baader 7nm H alpha filter

Last post by marktownley « Sun Oct 03, 2021 8:17 am
Replies: 4
by Merlin66 » Tue Sep 28, 2021 12:50 am

Rating: 2.45%

4 Replies

456 Views

Last post by marktownley
Sun Oct 03, 2021 8:17 am
MiniSHG -H alpha scan

Last post by Merlin66 « Mon Sep 27, 2021 10:29 pm
Replies: 4
by Merlin66 » Wed Sep 22, 2021 6:35 am

Rating: 1.96%

4 Replies

451 Views

Last post by Merlin66
Mon Sep 27, 2021 10:29 pm
h-beta sun SHG

Last post by marktownley « Mon Sep 27, 2021 7:38 pm
Replies: 3
by highfnum » Sun Sep 26, 2021 9:07 pm

Rating: 0.49%

3 Replies

306 Views

Last post by marktownley
Mon Sep 27, 2021 7:38 pm
G1 Geomagnetic Storm 17th September 2021

Last post by Carbon60 « Tue Sep 21, 2021 6:03 pm
Replies: 5
by Carbon60 » Fri Sep 17, 2021 9:31 pm

Rating: 3.43%

5 Replies

440 Views

Last post by Carbon60
Tue Sep 21, 2021 6:03 pm
Geomagnetic Unrest 10th September 2021

Last post by Carbon60 « Tue Sep 14, 2021 12:10 pm
Replies: 4
by Carbon60 » Sat Sep 11, 2021 6:51 am

Rating: 1.96%

4 Replies

460 Views

Last post by Carbon60
Tue Sep 14, 2021 12:10 pm
Smart Phone magnetometer

Last post by RodAstro « Sun Sep 12, 2021 9:55 pm

by RodAstro » Sun Sep 12, 2021 9:55 pm

0 Replies

252 Views

Last post by RodAstro
Sun Sep 12, 2021 9:55 pm
H-alpha full-disk SHG images with a Canon 300mm lens

Last post by thesmiths « Fri Sep 10, 2021 3:06 pm
Replies: 3
by thesmiths » Wed Sep 08, 2021 1:54 pm

Rating: 1.47%

3 Replies

392 Views

Last post by thesmiths
Fri Sep 10, 2021 3:06 pm
CaK full-disk SHG images with a Canon 300mm lens

Last post by Montana « Fri Sep 10, 2021 2:22 pm
Replies: 8
by thesmiths » Tue Sep 07, 2021 5:42 pm

Rating: 3.43%

8 Replies

514 Views

Last post by Montana
Fri Sep 10, 2021 2:22 pm
"Enhanced" Aurigid activity ?????

Last post by rsfoto « Thu Sep 09, 2021 2:10 pm
Replies: 5
by Wyvern » Thu Sep 02, 2021 8:37 pm

Rating: 2.94%

5 Replies

478 Views

Last post by rsfoto
Thu Sep 09, 2021 2:10 pm
SHG Images HA and CA

Last post by PDB « Thu Sep 09, 2021 8:03 am
Replies: 8
by PDB » Mon Sep 06, 2021 2:13 pm

Rating: 0.49%

8 Replies

483 Views

Last post by PDB
Thu Sep 09, 2021 8:03 am
Full-disk SHG images with a Canon 300mm lens

Last post by Montana « Mon Sep 06, 2021 7:26 am
Replies: 4
by thesmiths » Tue Aug 31, 2021 3:18 am

Rating: 3.43%

4 Replies

507 Views

Last post by Montana
Mon Sep 06, 2021 7:26 am
Improved SHG H-alpha imaging at 700mm FL

Last post by DeepSolar64 « Sun Sep 05, 2021 11:49 pm
Replies: 3
by thesmiths » Tue Aug 24, 2021 11:17 pm

Rating: 2.94%

3 Replies

530 Views

Last post by DeepSolar64
Sun Sep 05, 2021 11:49 pm
Perseid meteor shower 2021

Last post by EGRAY_OBSERVATORY « Sat Aug 21, 2021 11:03 am
Replies: 25
by rsfoto » Thu Aug 12, 2021 6:06 pm
1

2
Rating: 14.22%
25 Replies

1378 Views

Last post by EGRAY_OBSERVATORY
Sat Aug 21, 2021 11:03 am
A year of radio meteor data (Aug 2020-2021)

Last post by rsfoto « Wed Aug 18, 2021 4:50 pm
Replies: 5
by Carbon60 » Wed Aug 18, 2021 12:41 pm

Rating: 4.9%

5 Replies

409 Views

Last post by rsfoto
Wed Aug 18, 2021 4:50 pm
caK with SHG

Last post by marktownley « Wed Aug 18, 2021 7:37 am
Replies: 2
by highfnum » Fri Aug 13, 2021 9:26 pm

Rating: 0.49%

2 Replies

339 Views

Last post by marktownley
Wed Aug 18, 2021 7:37 am
Calcium H images -- with prominences!

Last post by thesmiths « Mon Aug 16, 2021 10:52 am
Replies: 4
by thesmiths » Sun Aug 15, 2021 10:13 pm

Rating: 1.96%

4 Replies

435 Views

Last post by thesmiths
Mon Aug 16, 2021 10:52 am
New SHG setup and images in H-alpha and Ca-H

Last post by Montana « Fri Aug 13, 2021 11:52 am
Replies: 7
by thesmiths » Wed Aug 11, 2021 11:34 pm

Rating: 3.43%

7 Replies

528 Views

Last post by Montana
Fri Aug 13, 2021 11:52 am
Co-rotating Interaction Region 7th August 2021

Last post by Carbon60 « Mon Aug 09, 2021 1:43 pm
Replies: 3
by Carbon60 » Sat Aug 07, 2021 7:08 pm

Rating: 3.43%

3 Replies

372 Views

Last post by Carbon60
Mon Aug 09, 2021 1:43 pm
spectrohelioscope at stellafane VT

Last post by Montana « Mon Aug 09, 2021 9:08 am
Replies: 3
by highfnum » Sun Aug 08, 2021 10:22 am

Rating: 0.98%

3 Replies

352 Views

Last post by Montana
Mon Aug 09, 2021 9:08 am
CME side swipe.... 2nd August 2021

Last post by Carbon60 « Thu Aug 05, 2021 9:08 am
Replies: 2
by Carbon60 » Tue Aug 03, 2021 9:23 pm

Rating: 2.45%

2 Replies

326 Views

Last post by Carbon60
Thu Aug 05, 2021 9:08 am
Delta Aquarids July 2021

Last post by Carbon60 « Tue Aug 03, 2021 9:15 pm
Replies: 5
by Carbon60 » Sun Aug 01, 2021 1:28 pm

Rating: 3.92%

5 Replies

453 Views

Last post by Carbon60
Tue Aug 03, 2021 9:15 pm
Aurora and Geomagnetic Unrest 27/28th July 2021

Last post by Carbon60 « Fri Jul 30, 2021 7:20 am
Replies: 5
by Carbon60 » Thu Jul 29, 2021 7:14 am

Rating: 3.43%

5 Replies

415 Views

Last post by Carbon60
Fri Jul 30, 2021 7:20 am
More results with the SolEx SHG

Last post by thesmiths « Mon Jul 26, 2021 11:14 am
Replies: 8
by PDB » Fri Jul 23, 2021 2:46 pm

Rating: 3.43%

8 Replies

763 Views

Last post by thesmiths
Mon Jul 26, 2021 11:14 am
Updated spectroheliography -- hardware improvements and new software workflow

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Replies: 11
by thesmiths » Wed Jul 21, 2021 9:11 pm

Rating: 2.45%

11 Replies

838 Views

Last post by Merlin66
Sun Jul 25, 2021 8:10 am
SMA 905 Light Source

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Replies: 2
by Grakrob778 » Wed Jul 21, 2021 4:07 am

2 Replies

347 Views

Last post by Grakrob778
Wed Jul 21, 2021 7:45 pm
Measurement of the FWHM of two PST etalons

Last post by christian viladrich « Tue Jul 20, 2021 7:34 am
Replies: 10
by christian viladrich » Sun Jul 18, 2021 1:18 pm

Rating: 2.45%

10 Replies

734 Views

Last post by christian viladrich
Tue Jul 20, 2021 7:34 am
Geomagnetic Impulse from X1.5 Class Flare

Last post by marktownley « Mon Jul 19, 2021 7:54 pm
Replies: 4
by Carbon60 » Sun Jul 04, 2021 8:13 am

Rating: 2.45%

4 Replies

467 Views

Last post by marktownley
Mon Jul 19, 2021 7:54 pm
A stunning new SHG image from Christian Buil

Last post by Merlin66 « Sun Jul 18, 2021 4:50 am
Replies: 17
by thesmiths » Wed Jun 30, 2021 11:00 pm

Rating: 6.37%

17 Replies

1267 Views

Last post by Merlin66
Sun Jul 18, 2021 4:50 am
August 3, 2020 Spectroheliograms: the Fraunhofer Four

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Replies: 10
by p_zetner » Mon Aug 17, 2020 3:30 pm

Rating: 7.35%

10 Replies

1253 Views

Last post by DeepSolar64
Sat Jul 03, 2021 4:11 am
Arietid meteor results

Last post by Carbon60 « Mon Jun 28, 2021 6:55 am
Replies: 8
by Wyvern » Thu Jun 10, 2021 8:39 pm

Rating: 7.84%

8 Replies

751 Views

Last post by Carbon60
Mon Jun 28, 2021 6:55 am
Mass pigeon loss over the weekend

Last post by Montana « Fri Jun 25, 2021 2:28 pm
Replies: 2
by Montana » Fri Jun 25, 2021 10:42 am

Rating: 1.96%

2 Replies

338 Views

Last post by Montana
Fri Jun 25, 2021 2:28 pm
15June: Rare event captured by SHG

Last post by Montana « Sun Jun 20, 2021 11:14 am
Replies: 10
by p_zetner » Fri Jun 18, 2021 9:28 pm

Rating: 3.92%

10 Replies

724 Views

Last post by Montana
Sun Jun 20, 2021 11:14 am
G1 Geomagnetic Storm 16th June 2021

Last post by eroel « Fri Jun 18, 2021 3:38 pm
Replies: 3
by Carbon60 » Wed Jun 16, 2021 4:30 pm

Rating: 1.47%

3 Replies

346 Views

Last post by eroel
Fri Jun 18, 2021 3:38 pm
Why is the Sun visible with 3D Laser Scanning?

Last post by Carbon60 « Fri Jun 18, 2021 1:09 pm
Replies: 8
by AnthonyM » Tue Jun 15, 2021 5:48 am

Rating: 0.49%

8 Replies

441 Views

Last post by Carbon60
Fri Jun 18, 2021 1:09 pm
Spectroheliograph at 700mm FL

Last post by Carbon60 « Tue Jun 15, 2021 5:59 am
Replies: 6
by thesmiths » Mon Jun 14, 2021 12:24 am

Rating: 3.43%

6 Replies

568 Views

Last post by Carbon60
Tue Jun 15, 2021 5:59 am
First time H-alpha SHG imaging

Last post by Montana « Mon Jun 14, 2021 1:11 pm
Replies: 4
by thesmiths » Sun Jun 13, 2021 12:22 am

Rating: 0.98%

4 Replies

465 Views

Last post by Montana
Mon Jun 14, 2021 1:11 pm
Geomagnetic summary for May 2021

Last post by Carbon60 « Thu Jun 10, 2021 7:53 pm
Replies: 4
by Carbon60 » Thu Jun 03, 2021 6:43 am

Rating: 2.45%

4 Replies

405 Views

Last post by Carbon60
Thu Jun 10, 2021 7:53 pm
Magnetometer upgrade 7th June 2021

Last post by Carbon60 « Thu Jun 10, 2021 7:31 pm
Replies: 6
by Carbon60 » Tue Jun 08, 2021 2:53 pm

Rating: 2.94%

6 Replies

413 Views

Last post by Carbon60
Thu Jun 10, 2021 7:31 pm
New foam board spectroheliograph results

Last post by thesmiths « Thu Jun 10, 2021 3:41 pm
Replies: 2
by thesmiths » Tue Jun 08, 2021 9:10 pm

Rating: 0.98%

2 Replies

364 Views

Last post by thesmiths
Thu Jun 10, 2021 3:41 pm
Spectroheliograph built with foam board and a hot glue gun

Last post by marktownley « Tue Jun 08, 2021 3:45 pm
Replies: 5
by thesmiths » Sat Jun 05, 2021 12:54 am

Rating: 4.9%

5 Replies

679 Views

Last post by marktownley
Tue Jun 08, 2021 3:45 pm
Measurements of Ca K filters with Sol'Ex spectrograph

Last post by marktownley « Tue Jun 08, 2021 3:35 pm
Replies: 3
by christian viladrich » Tue Jun 08, 2021 11:17 am

Rating: 0.98%

3 Replies

368 Views

Last post by marktownley
Tue Jun 08, 2021 3:35 pm
Fun with the SHG

Last post by PDB « Tue Jun 08, 2021 11:43 am
Replies: 10
by PDB » Mon Jun 07, 2021 10:43 am

Rating: 5.39%

10 Replies

701 Views

Last post by PDB
Tue Jun 08, 2021 11:43 am
Measuring solar wind

Last post by Carbon60 « Tue Jun 01, 2021 5:50 am
Replies: 10
by SimonM » Thu Mar 11, 2021 10:23 pm

Rating: 4.9%

10 Replies

725 Views

Last post by Carbon60
Tue Jun 01, 2021 5:50 am
Mercury sodium tail

Last post by KMH « Tue May 25, 2021 1:19 am
Replies: 16
by KMH » Sun May 16, 2021 4:21 am

Rating: 0.49%

16 Replies

793 Views

Last post by KMH
Tue May 25, 2021 1:19 am
SOLEX spectrohelograph project - 3D printing DIY

Last post by PDB « Mon May 24, 2021 8:36 pm
Replies: 21
by christian viladrich » Fri Jan 22, 2021 12:23 pm

Rating: 5.39%

21 Replies

1694 Views

Last post by PDB
Mon May 24, 2021 8:36 pm
my SHG and using it to test some solar filters

Last post by highfnum « Mon May 17, 2021 8:23 pm
Replies: 9
by highfnum » Wed May 12, 2021 8:20 pm

Rating: 2.45%

9 Replies

707 Views

Last post by highfnum
Mon May 17, 2021 8:23 pm
CME Impact 12th May 2021-UPDATED

Last post by marktownley « Sat May 15, 2021 1:56 pm
Replies: 8
by Carbon60 » Wed May 12, 2021 2:48 pm

Rating: 4.9%

8 Replies

564 Views

Last post by marktownley
Sat May 15, 2021 1:56 pm
Eta Aquarid meteor shower May 5

Last post by Carbon60 « Fri May 14, 2021 7:57 am
Replies: 9
by rsfoto » Wed May 05, 2021 5:37 pm

Rating: 10.29%

9 Replies

628 Views

Last post by Carbon60
Fri May 14, 2021 7:57 am
Nice Meteor Activity

Last post by Montana « Mon May 10, 2021 4:53 pm
Replies: 1
by rsfoto » Mon May 10, 2021 3:31 pm

Rating: 0.98%

1 Replies

301 Views

Last post by Montana
Mon May 10, 2021 4:53 pm
Radio meteor detection - Lyrids

Last post by rsfoto « Sat May 01, 2021 7:43 pm
Replies: 7
by JochenM » Sat May 01, 2021 10:20 am

Rating: 2.94%

7 Replies

555 Views

Last post by rsfoto
Sat May 01, 2021 7:43 pm
Lyrids April 2021_Radio Detection

Last post by EGRAY_OBSERVATORY « Mon Apr 26, 2021 1:04 am
Replies: 6
by Carbon60 » Fri Apr 23, 2021 6:36 am

Rating: 4.41%

6 Replies

512 Views

Last post by EGRAY_OBSERVATORY
Mon Apr 26, 2021 1:04 am
Lyrids April 2021

Last post by MapleRidge « Sun Apr 25, 2021 12:01 pm
Replies: 11
by rsfoto » Thu Apr 22, 2021 5:03 pm

Rating: 6.37%

11 Replies

659 Views

Last post by MapleRidge
Sun Apr 25, 2021 12:01 pm
G1 Geomagnetic Storms 15-17th April 2021-Updated

Last post by marktownley « Wed Apr 21, 2021 7:56 pm
Replies: 8
by Carbon60 » Sat Apr 17, 2021 7:29 am

Rating: 4.41%

8 Replies

653 Views

Last post by marktownley
Wed Apr 21, 2021 7:56 pm
Zeeman effect in helium using a home-made Fabry-Perot etalon

Last post by thesmiths « Tue Apr 06, 2021 4:27 pm
Replies: 8
by thesmiths » Tue Feb 23, 2021 2:54 am

Rating: 3.92%

8 Replies

966 Views

Last post by thesmiths
Tue Apr 06, 2021 4:27 pm
SHG h-beta caK

Last post by Montana « Tue Apr 06, 2021 7:06 am
Replies: 2
by highfnum » Mon Apr 05, 2021 11:47 pm

Rating: 1.47%

2 Replies

374 Views

Last post by Montana
Tue Apr 06, 2021 7:06 am
Geomagnetic Unrest 20th March 2021- UPDATED

Last post by marktownley « Sun Mar 28, 2021 10:28 am
Replies: 4
by Carbon60 » Sat Mar 20, 2021 4:46 pm

Rating: 3.43%

4 Replies

496 Views

Last post by marktownley
Sun Mar 28, 2021 10:28 am
Zeeman effect in neon using the home-made etalon

Last post by thesmiths « Wed Mar 24, 2021 5:55 pm
Replies: 2
by thesmiths » Wed Mar 17, 2021 1:06 am

Rating: 2.45%

2 Replies

417 Views

Last post by thesmiths
Wed Mar 24, 2021 5:55 pm
G1 Geomagnetic Storm 13th March 2021

Last post by marktownley « Sat Mar 20, 2021 10:38 am
Replies: 6
by Carbon60 » Sun Mar 14, 2021 4:36 pm

Rating: 2.45%

6 Replies

470 Views

Last post by marktownley
Sat Mar 20, 2021 10:38 am
Quantitative and qualitative test of etalons with an Ha tube

Last post by christian viladrich « Wed Mar 17, 2021 5:54 pm
Replies: 18
by christian viladrich » Sun Feb 07, 2021 9:56 pm

Rating: 9.31%

18 Replies

1433 Views

Last post by christian viladrich
Wed Mar 17, 2021 5:54 pm
Radio meteor detection- Feb 2021

Last post by marktownley « Sun Mar 14, 2021 7:05 am
Replies: 4
by Carbon60 » Wed Mar 10, 2021 3:25 pm

Rating: 2.45%

4 Replies

414 Views

Last post by marktownley
Sun Mar 14, 2021 7:05 am
Zeeman effect in mercury using the home-made Fabry-Perot (with gifs!)

Last post by thesmiths « Sun Mar 07, 2021 2:41 am
Replies: 3
by thesmiths » Mon Mar 01, 2021 2:54 am

Rating: 1.47%

3 Replies

410 Views

Last post by thesmiths
Sun Mar 07, 2021 2:41 am
H spectrum tube first light

Last post by christian viladrich « Sat Mar 06, 2021 11:16 am
Replies: 1
by Fabio_Imm » Fri Mar 05, 2021 6:53 pm

Rating: 0.98%

1 Replies

336 Views

Last post by christian viladrich
Sat Mar 06, 2021 11:16 am
G1 Geomagnetic Storm

Last post by Montana « Fri Mar 05, 2021 9:02 am
Replies: 3
by Carbon60 » Wed Mar 03, 2021 8:31 pm

Rating: 0.98%

3 Replies

348 Views

Last post by Montana
Fri Mar 05, 2021 9:02 am
Radio meteor detection - Feb 2021

Last post by marktownley « Wed Mar 03, 2021 8:16 pm
Replies: 6
by JochenM » Mon Mar 01, 2021 8:30 am

Rating: 3.92%

6 Replies

464 Views

Last post by marktownley
Wed Mar 03, 2021 8:16 pm
Testing a Daystar QPE 0.6A filter with a H spectrum tube.

Last post by LTHB « Wed Mar 03, 2021 10:33 am
Replies: 4
by p_zetner » Sun Feb 28, 2021 9:14 pm

Rating: 1.96%

4 Replies

549 Views

Last post by LTHB
Wed Mar 03, 2021 10:33 am
Testing a Lunt LS50FHa etalon with a H spectrum tube.

Last post by christian viladrich « Fri Feb 26, 2021 10:22 am
Replies: 14
by p_zetner » Mon Feb 22, 2021 11:33 pm

Rating: 8.33%

14 Replies

1341 Views

Last post by christian viladrich
Fri Feb 26, 2021 10:22 am
A New Spectroheliograph

Last post by MalVeauX « Mon Feb 22, 2021 8:11 pm
Replies: 8
by p_zetner » Fri Feb 19, 2021 11:50 pm

Rating: 6.37%

8 Replies

870 Views

Last post by MalVeauX
Mon Feb 22, 2021 8:11 pm
Geomagnetic Activity 18th-20th February 2021

Last post by Carbon60 « Sun Feb 21, 2021 5:22 pm
Replies: 3
by Carbon60 » Sat Feb 20, 2021 6:30 pm

Rating: 3.92%

3 Replies

337 Views

Last post by Carbon60
Sun Feb 21, 2021 5:22 pm
Fabry-Perot etalon testing: Zeeman splitting of neon

Last post by thesmiths « Thu Feb 18, 2021 1:34 am
Replies: 14
by thesmiths » Fri Feb 12, 2021 10:52 pm

Rating: 3.92%

14 Replies

1056 Views

Last post by thesmiths
Thu Feb 18, 2021 1:34 am
A hydrogen spectrum tube-- for fun and etalon testing

Last post by Merlin66 « Tue Feb 16, 2021 4:45 am
Replies: 20
by thesmiths » Fri Feb 05, 2021 9:28 pm

Rating: 7.35%

20 Replies

1374 Views

Last post by Merlin66
Tue Feb 16, 2021 4:45 am
G1 Geomagnetic Storm 6-7th Feb '21-UPDATED

Last post by Carbon60 « Fri Feb 12, 2021 8:16 pm
Replies: 11
by Carbon60 » Sun Feb 07, 2021 8:31 am

Rating: 4.9%

11 Replies

635 Views

Last post by Carbon60
Fri Feb 12, 2021 8:16 pm
Geomagnetic Surprise 8th Feb 2021

Last post by marktownley « Thu Feb 11, 2021 7:57 pm
Replies: 5
by Carbon60 » Wed Feb 10, 2021 7:22 am

Rating: 3.92%

5 Replies

398 Views

Last post by marktownley
Thu Feb 11, 2021 7:57 pm
Home-made Fabry-Perot etalon project

Last post by marktownley « Wed Feb 10, 2021 5:43 pm
Replies: 5
by thesmiths » Wed Feb 10, 2021 12:51 am

Rating: 2.94%

5 Replies

502 Views

Last post by marktownley
Wed Feb 10, 2021 5:43 pm
Geomagnetic Summary for January 2021

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by Carbon60 » Mon Feb 01, 2021 6:50 pm

Rating: 1.96%

4 Replies

398 Views

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Rating: 4.41%

6 Replies

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Rating: 6.86%

12 Replies

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Rating: 1.96%

3 Replies

377 Views

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Research suggestions

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Rating: 1.96%

3 Replies

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Rating: 2.94%

6 Replies

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Rating: 0.49%

2 Replies

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Rating: 5.39%

7 Replies

654 Views

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Rating: 2.94%

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Rating: 2.94%

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Rating: 4.9%

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Rating: 1.96%

3 Replies

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Rating: 5.39%

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Rating: 1.47%

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Rating: 5.39%

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1

2
Rating: 9.31%
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Rating: 2.94%

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Rating: 3.92%

8 Replies

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Rating: 0.98%

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Rating: 3.43%

12 Replies

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Rating: 0.98%

12 Replies

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Rating: 2.45%

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Rating: 0.49%

2 Replies

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Rating: 2.45%

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1

2

3

4
Rating: 21.57%
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Rating: 1.96%

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Rating: 3.43%

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Rating: 4.9%

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Rating: 2.94%

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Rating: 1.47%

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Rating: 0.98%

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Rating: 4.41%

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Rating: 5.88%

15 Replies

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by Phil Rousselle » Fri Jul 03, 2020 7:49 am

Rating: 0.98%

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Rating: 4.9%

9 Replies

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Rating: 0.49%

4 Replies

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Rating: 1.47%

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1

2
Rating: 1.96%
42 Replies

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Rating: 1.96%

7 Replies

997 Views

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Rating: 0.49%

3 Replies

658 Views

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Rating: 3.43%

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Rating: 0.98%

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Quick first light

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Rating: 1.47%

4 Replies

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Rating: 0.98%

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914 Views

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Fri May 08, 2020 1:46 pm
apr 28 shg caH caK

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Rating: 0.98%

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3741 Views

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6742 Views

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old man is snoring

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4174 Views

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SHG caH cak

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1

2
26 Replies

7145 Views

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1927 Views

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Mon Nov 25, 2019 8:03 am
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2466 Views

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2364 Views

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3118 Views

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anyone know about this guy

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2597 Views

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Mon Oct 21, 2019 4:53 pm
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2407 Views

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3440 Views

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2398 Views

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6 Replies

2764 Views

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2392 Views

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3699 Views

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2410 Views

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6 Replies

2717 Views

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Thu Aug 01, 2019 10:51 pm
cak present and past

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1

2
49 Replies

10752 Views

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shg a few freq

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6 Replies

2474 Views

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Sat Jul 27, 2019 2:38 pm
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3 Replies

2231 Views

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question on Young's F line image

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4 Replies

2366 Views

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Thu Jun 27, 2019 10:21 am
A 19th century PST

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by highfnum » Fri Jun 21, 2019 6:09 pm

5 Replies

2606 Views

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Mon Jun 24, 2019 10:08 pm
can someone explain double reversal?

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3 Replies

2650 Views

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Thu Jun 13, 2019 10:27 am
Ha sun with SHG

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3093 Views

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2199 Views

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2828 Views

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3655 Views

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by Carbon60 » Sat Jan 05, 2019 9:42 am

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2653 Views

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by Carbon60 » Mon Dec 31, 2018 6:07 pm

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3060 Views

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14 Replies

4939 Views

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Mon Dec 24, 2018 11:59 pm
magnetic fields

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by Merrill55 » Sat Dec 22, 2018 3:22 am

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3269 Views

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Sun Dec 23, 2018 5:04 am
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11 Replies

5205 Views

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by Carbon60 » Mon Nov 05, 2018 7:10 am

3 Replies

2518 Views

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For Science / Math Lovers: Measurement of a Solar Filament Temperature.

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6 Replies

4244 Views

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by Carbon60 » Mon Oct 08, 2018 5:59 am

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2818 Views

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2555 Views

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by Carbon60 » Tue Sep 11, 2018 5:50 am

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3019 Views

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Sun Sep 16, 2018 11:01 am
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13 Replies

5381 Views

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Sat Sep 15, 2018 4:32 pm
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10 Replies

3864 Views

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Wed Aug 29, 2018 4:45 pm
CME hit!

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8 Replies

3590 Views

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Tue Aug 28, 2018 7:59 pm
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Last post by marktownley
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08Aug Spectroheliograms

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Finally some magnetic activity Aug 16th 2018

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by Carbon60 » Thu Aug 16, 2018 9:48 am

5 Replies

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Last post by Carbon60
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Even when there's little going on....

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4 Replies

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Recent Digital SHG

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12 Replies

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finally some solar action

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16 Replies

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strong prom in Ha and even in Hb

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3 Replies

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4 Replies

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just a little fun

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2 Replies

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1

2
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1

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32 Replies

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Some Natural Spectroscopy!

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2017 Annual Geomagnetic Data- Updated

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ROT2 command of IRIS

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1

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3
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