Here are some extractions with Jhelioviewer, from SDO AIA data base in 304 Å
Search found 87 matches
- Tue May 30, 2023 8:53 am
- Forum: SPoD Archive
- Topic: animation of the mega Prom's
- Replies: 31
- Views: 2144
- Tue May 30, 2023 8:53 am
- Forum: This is SolarChat !!
- Topic: animation of the mega Prom's
- Replies: 39
- Views: 2301
Re: animation of the mega Prom's
Here are some extractions with Jhelioviewer, from SDO AIA data base in 304 Å
- Mon May 29, 2023 12:05 pm
- Forum: SPoD Archive
- Topic: animation of the mega Prom's
- Replies: 31
- Views: 2144
Re: animation of the mega Prom's
Great shot Paul! Thank !
- Mon May 29, 2023 12:05 pm
- Forum: This is SolarChat !!
- Topic: animation of the mega Prom's
- Replies: 39
- Views: 2301
Re: animation of the mega Prom's
Great shot Paul! Thank !
- Mon Feb 18, 2019 8:53 pm
- Forum: This is SolarChat !!
- Topic: anim prom Sun 13-02-2019
- Replies: 20
- Views: 2532
Re: anim prom Sun 13-02-2019
Very nice animation and pict Paul! You might need a bigger sensor for the next bigger prom
- Sat Feb 16, 2019 5:51 pm
- Forum: This is SolarChat !!
- Topic: Big prom 2019/02/14
- Replies: 9
- Views: 1629
Re: Big prom 2019/02/14
Thank you solarchaters, hope solar min is behind.
- Thu Feb 14, 2019 9:15 pm
- Forum: This is SolarChat !!
- Topic: Big prom 2019/02/14
- Replies: 9
- Views: 1629
Big prom 2019/02/14
Hi
Had a glance at it yesterday 13, but didn't have the time to catch it today. It was bigger (1/5 of the sun) but weaker today, and better with the étalon de tuned (lower pressure). Lunt 100 with 18mm eyepiece, still between cirrus
Had a glance at it yesterday 13, but didn't have the time to catch it today. It was bigger (1/5 of the sun) but weaker today, and better with the étalon de tuned (lower pressure). Lunt 100 with 18mm eyepiece, still between cirrus
- Thu Apr 12, 2018 6:35 am
- Forum: This is SolarChat !!
- Topic: Lunt LS230???
- Replies: 11
- Views: 2470
Re: Lunt LS230???
And the mount...
- Tue Apr 10, 2018 2:02 pm
- Forum: This is SolarChat !!
- Topic: Lunt LS230???
- Replies: 11
- Views: 2470
Re: Lunt LS230???
From lunt years ago https://luntsolarsystems.com/limited-run/ Lunt is pleased to announce the next run of LS230T/B3400/PT Solar Systems. This run will be limited to 10 instruments. However, we are excited to be offering these systems as the Double Stack version with dual USB/PC Pressure Tune control...
- Wed Sep 13, 2017 7:49 am
- Forum: This is SolarChat !!
- Topic: 2017_09_11 loop
- Replies: 7
- Views: 1711
Re: 2017_09_11 loop
Thank you very much for your kind comments!
- Mon Sep 11, 2017 1:29 pm
- Forum: This is SolarChat !!
- Topic: 2017_09_11 loop
- Replies: 7
- Views: 1711
2017_09_11 loop
Thanks to observers from this group, I took some time to observe it before going to work (LS100Tha):
- Wed Jun 07, 2017 8:16 am
- Forum: This is SolarChat !!
- Topic: C14 356mm aperture in solar H-a imaging.
- Replies: 9
- Views: 2107
Re: C14 in solar imaging.
Great setup and picts!!!!! What etalon system do you use? To improve local seeing, I would cover everything that is black: - the rings: they catch heat and transmit it through the tube causing internal local air current (I have some at night on my C8 due to the cooling of the rail on the side...) - ...
- Thu Apr 27, 2017 11:48 am
- Forum: This is SolarChat !!
- Topic: Test of a new 295mm D-ERF.
- Replies: 11
- Views: 2344
Re: Test of a new 295mm D-ERF.
Impressive!!!
- Thu Apr 27, 2017 9:01 am
- Forum: This is SolarChat !!
- Topic: Criterion Solar Prominence Viewer
- Replies: 4
- Views: 1542
Re: Criterion Solar Prominence Viewer
Hi Merlin, never saw one, but found some infos on CN: https://www.cloudynights.com/topic/260382-criterion-solar-prominence-viewer/ Never did it myself, but I have seen solar projection with Schmidt cassegrain in those time, so dangerous for many reasons. Is it this add? (thanks waybak machine) crite...
- Sun Apr 23, 2017 9:17 pm
- Forum: This is SolarChat !!
- Topic: 21/04 : HA results with new 152 mod
- Replies: 7
- Views: 1576
Re: 21/04 : HA results with new 152 mod
That's very nice with a very good resolution !!!! Wich size of ERF do you use?
- Sat Apr 15, 2017 6:08 pm
- Forum: Solar Scope Modifications
- Topic: lunt 50 mod
- Replies: 35
- Views: 19806
Re: lunt 50 mod
That's cool!!! Do you have some images taken with it?
- Fri Dec 16, 2016 10:04 am
- Forum: This is SolarChat !!
- Topic: Collimating the LS152T
- Replies: 13
- Views: 2598
Re: Collimating the LS152T
Same as Pedro ans Eric, twiking BF vs étalon orientation . ;) you can check collimation in Ha with a pin hole on an aluminium foil un front of a broadband light source as hallogen far, by night. ;) If collim is OK, something on the etalon cell might be too much tilted. Lunt might help you then (they...
- Wed Dec 07, 2016 10:04 pm
- Forum: This is SolarChat !!
- Topic: Sun 7 12 2016
- Replies: 8
- Views: 1643
Re: Sun 7 12 2016
Great!! are they from the filaments seen before?
- Wed Dec 07, 2016 9:10 pm
- Forum: This is SolarChat !!
- Topic: Prom from 2016/12/03
- Replies: 6
- Views: 1547
Re: Prom from 2016/12/03
Thank you Franco and Montana. Sketching in 10 to 20min is a lazy way for me to avoid setting up the equatorial mount/cam/computer, and still keeping an eye on the sun to get a good resolution Cheers from Paris
- Wed Dec 07, 2016 10:34 am
- Forum: This is SolarChat !!
- Topic: Prom from 2016/12/03
- Replies: 6
- Views: 1547
Prom from 2016/12/03
Hi, just a sketch from last saturday. Seeing was good and there was a prom!! With Lunt 100 THa simple stack: https://lh3.googleusercontent.com/2_cz8TkH0DgeEeKtPfv_u0fy6FEg0ocv0rayQRT50b808UZVsRRsjB4FlG24YLor6L8_tNqbRhNUFVt78JIbVeaqBCwWI3UVm49_w3rBohSaC6zdPVs8DFe2MmSJP_vmkGA0zGPrZ3xrDrmdi8g10Tj_se1LM...
- Sat Sep 03, 2016 10:28 am
- Forum: This is SolarChat !!
- Topic: My greatest haul this month. 280mm + 295mm D-ERF + LS35
- Replies: 16
- Views: 2683
Re: My greatest haul this month. 280mm + 295mm D-ERF + LS35
Excellent images. Hope one day I can directely observe un such a telescope
- Tue Jul 05, 2016 7:09 am
- Forum: Solar Scope Modifications
- Topic: what if - h-alpha thru 17th century optics
- Replies: 9
- Views: 4221
Re: what if - h-alpha thru 17th century optics
Sounds interesting but the picts are invisible for me
- Sat Jun 04, 2016 11:00 am
- Forum: Solar Astronomy Shop and Swap
- Topic: Want to buy: DSII for Lunt100mm
- Replies: 2
- Views: 3870
Re: Want to buy: DSII for Lunt100mm
Still looking for an internal double stack module DSI for a Lunt 100mm. Would travel through EU to receipt it
- Sat Jun 04, 2016 7:12 am
- Forum: Solar Scope Modifications
- Topic: Concept model of new 12" Solar Newton
- Replies: 51
- Views: 22764
Re: Concept model of new 12" Solar Newton
Nice project!!! Given your low latitude, why not using an equatorial plateform combined with Dobson mount? It's easy to make from wood, Footprint is less, weight also, no vibration from the fork,....
- Tue May 24, 2016 12:54 pm
- Forum: This is SolarChat !!
- Topic: De-pressure Lunt tuner for storage?
- Replies: 7
- Views: 1872
Re: De-pressure Lunt tuner for storage?
I do the same with the LS100 since 2009 in order to nearly equilibrate and stress less the plumping/joints if there are some
- Thu May 05, 2016 10:16 am
- Forum: This is SolarChat !!
- Topic: Baader 4x Telecentric Setup
- Replies: 14
- Views: 2989
Re: Baader 4x Telecentric Setup
Impressive ans nice!!! Maybe if you have room and 2 diagonals, you can fold back the lightpath, making a U with it and get the Quark at the focuser level
- Thu Mar 10, 2016 5:41 pm
- Forum: This is SolarChat !!
- Topic: Big guns compared + additions
- Replies: 25
- Views: 2632
Re: Big guns compared + additions
That's interesting George and Gus!
- Wed Mar 09, 2016 9:15 pm
- Forum: This is SolarChat !!
- Topic: Big guns compared + additions
- Replies: 25
- Views: 2632
Lso
Yes Walter was right also with the warm up time (15' to 30'). By the way, the first version of the LS 100 (the one with black lens cell and F/8 achromat lens) wasn't as good as the current version (red lens cell an ED F/100 lens). Which version do you have with which BF? I ask you this because it ap...
- Wed Mar 09, 2016 5:41 pm
- Forum: This is SolarChat !!
- Topic: Big guns compared + additions
- Replies: 25
- Views: 2632
Re: Big guns compared
Hi Mike, is jour ITF OK? I can get sharp and images with my LS100 with cirrus.
- Fri Dec 18, 2015 4:23 pm
- Forum: Solar Astronomy Shop and Swap
- Topic: Want to buy: DSII for Lunt100mm
- Replies: 2
- Views: 3870
Want to buy: DSII for Lunt100mm
Hi,
I'm looking for a DSII module for LuntTHa100, would prefer in EU.
Thankx
I'm looking for a DSII module for LuntTHa100, would prefer in EU.
Thankx
- Fri Dec 18, 2015 4:01 pm
- Forum: Solar Scope Modifications
- Topic: Magnetic Sol-Searcher mod
- Replies: 2
- Views: 3147
Re: Magnetic Sol-Searcher mod
Cool mod!!!
- Wed Dec 16, 2015 3:09 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: ARIES Full size ERF filters for larger telescopes.
- Replies: 15
- Views: 21848
Re: ARIES Full size ERF filters for larger telescopes.
Do you have the price for a C8?
- Wed Nov 25, 2015 7:18 am
- Forum: Solar Scope Modifications
- Topic: Solar Newtonian 8"
- Replies: 47
- Views: 16303
Re: Solar Newtonian 8"
The front black parts can increase instrumental turbulence:
-secondary holder
-front black outer part of the tube
The mount/pier also as heat waves go up.
white painting/white coton shreds ?
-secondary holder
-front black outer part of the tube
The mount/pier also as heat waves go up.
white painting/white coton shreds ?
- Sun Nov 01, 2015 5:31 pm
- Forum: Commercial Solar Filters/Cameras/Hardware
- Topic: Lunt LS100 ghosting now with polarizer
- Replies: 20
- Views: 13523
Re: Lunt LS100 ghosting now with polarizer
As the gost doesn't turn with the DS module, did you try to test the influence of the BF filter orientations ? We tried several BF orientations on several scopes (Lunt100+BF3400, Lunt100+BF600, Front coronado+BF3000) and there was an optimal orientation for optimizing the resulting bandwidth.
- Sun Nov 01, 2015 5:13 pm
- Forum: This is SolarChat !!
- Topic: New setup : WO megrez 90mm Ha & CAk
- Replies: 4
- Views: 968
Re: New setup : WO megrez 90mm Ha & CAk
Very nice picts, I'm impatient to see picts with a good seeing. Cheers for jour new setup
- Wed Sep 30, 2015 7:47 am
- Forum: This is SolarChat !!
- Topic: Mega prom
- Replies: 13
- Views: 883
Re: Mega prom
Thanks for the pic and the info!!!! Still there
- Tue Sep 22, 2015 5:56 am
- Forum: Solar Scope Modifications
- Topic: my chromosphere/prom viewer
- Replies: 15
- Views: 6719
Re: my chromosphere/prom viewer
Great setup!!! So you have the double stack with one filter in double pass too? not trisky with ghosts?
- Tue Jul 07, 2015 7:23 am
- Forum: This is SolarChat !!
- Topic: FEEL THE DIFFERENCE! DS vs SS. MUST SEE !
- Replies: 31
- Views: 3480
Re: FEEL THE DIFFERENCE! DS vs SS. MUST SEE !
Thank you Valery. I wish one day I could observe the sun in one of your setup. Were you in french ROS meeting at Serbanne this year?
- Mon Jul 06, 2015 6:02 pm
- Forum: This is SolarChat !!
- Topic: FEEL THE DIFFERENCE! DS vs SS. MUST SEE !
- Replies: 31
- Views: 3480
Re: FEEL THE DIFFERENCE! DS vs SS. MUST SEE !
Hi Valéry, both are excellent !! Wondering about the SS image: as much more black and white zones are saturated, it seems that prior camera, the optical image seems to have a wider dynamical range in SS mode than in DS mode, as if you had a better optical contrast in SS mode (Hence HDR to catch all ...
- Mon Jun 08, 2015 12:29 pm
- Forum: This is SolarChat !!
- Topic: Running Penumbral waves, 5 june.
- Replies: 16
- Views: 1298
Re: Running Penumbral waves, 5 june.
Fantastic work!! great to see that, I will look the penumbra with a new eye . And thank you very much for the article link.
Still hope to see/catch some Moreton waves
Cheers from sunny France
Still hope to see/catch some Moreton waves
Cheers from sunny France
- Thu Apr 23, 2015 3:51 pm
- Forum: Solar Scope Modifications
- Topic: Big C11 options....
- Replies: 31
- Views: 8593
Re: Big C11 options....
Some very interesting references if you want some clues about optimizing positions/sub apertures: http://www.rop.cnrs.fr/IMG/pdf/F_Cassaing.pdf https://tel.archives-ouvertes.fr/tel-00140049/document I did the simulations: The five is still better ;) https://lh4.googleusercontent.com/-EM-BtiwT-Bg/VTk...
- Wed Apr 22, 2015 9:19 pm
- Forum: This is SolarChat !!
- Topic: Fantastic solar eruption /very good seeing / 204mm refractor
- Replies: 14
- Views: 967
Re: Fantastic solar eruption /very good seeing / 204mm refra
Fabulous!!!! Thanks to astrosoleil list alert, I could see it too Thank you vert much for these fantastic picts.
Cheers
Cheers
- Tue Apr 21, 2015 6:58 pm
- Forum: This is SolarChat !!
- Topic: April 21, 2015: Some fireworks on the BOTH limbs
- Replies: 9
- Views: 1001
Re: April 21, 2015: Some fireworks on the BOTH limbs
I could catch it on http://www.knowtex.com/nav/helioviewer- ... tool_35526
Here is the sequence:
https://youtu.be/7pvrA9UoeAg
clear sky
Here is the sequence:
https://youtu.be/7pvrA9UoeAg
clear sky
- Tue Apr 21, 2015 3:06 pm
- Forum: This is SolarChat !!
- Topic: April 21, 2015: Some fireworks on the BOTH limbs
- Replies: 9
- Views: 1001
Re: April 21, 2015: Some fireworks on the BOTH limbs
Seems that the sun is awakening again, so there might be an other chance BTW the loop was also really nice.
- Tue Apr 21, 2015 2:34 pm
- Forum: This is SolarChat !!
- Topic: April 21, 2015: Some fireworks on the BOTH limbs
- Replies: 9
- Views: 1001
Re: April 21, 2015: Some fireworks on the BOTH limbs
Great shots with resolution. You catched the end of the coronal ejection on the eastern limb (it was massive 20% sun diameter). Hope someone catched it. I began to draw it, but it was to big fast and changing, I prefered to stay s(t)icked on the eyepiece. It's not easy to catch both ends with one te...
- Wed Apr 08, 2015 9:11 am
- Forum: Solar Scope Modifications
- Topic: modification helioscope Scopium in Ha
- Replies: 5
- Views: 2214
Re: modification helioscope Scopium in Ha
That's very interesting. It looks that it could be used as a secondary mirror on a Newton too with an adapted holder. Do you think that the coating will tend to age?
- Sun Apr 05, 2015 10:26 am
- Forum: Solar Scope Modifications
- Topic: Big C11 options....
- Replies: 31
- Views: 8593
Re: Big C11 options....
+1 with Valery. Stuff from the same batch. I did some biblio. Here are some interesting simulations optimizing the sub apertures diameters, and relative positions (the 4 subs is interesting) I will run the psf on them when clouds come back ;) I think DSobserver will have some stuff to test on his C1...
- Sat Apr 04, 2015 7:03 pm
- Forum: Solar Scope Modifications
- Topic: Big C11 options....
- Replies: 31
- Views: 8593
Re: Big C11 options....
It looks quite good with 5 holes (obstruction is 26%, small diameter is 37% full one), here it is: https://lh4.googleusercontent.com/-lQLoCM3d7RE/VSA1Gq5U8FI/AAAAAAAAQWQ/c1cbuik8140/w1589-h865-no/synthetic_cat_5.jpg The 6 holes version (obstruction is 33%, small diameter hole is 33% the full one): h...
- Sat Apr 04, 2015 4:46 pm
- Forum: Solar Scope Modifications
- Topic: Big C11 options....
- Replies: 31
- Views: 8593
Re: Big C11 options....
With the pattern simulated, central obstruction is (2-sqrt(2))/(2+sqrt(2))=17% (if my maths are correct), it would fit tight a newton Sorry for Cats
5 or 6 holes version for cats?
5 or 6 holes version for cats?
- Sat Apr 04, 2015 3:31 pm
- Forum: Solar Scope Modifications
- Topic: Big C11 options....
- Replies: 31
- Views: 8593
Re: Big C11 options....
Well I think that C.viladrich already more or less answered to my question.... http://www.cloudynights.com/topic/491787-full-aperture-baader-solar-film-on-a-c14/?p=6460933 As it's cloudy, I made some simulations, with a closer spacing than C. viladrich. It's promising resolution wise, even the firs...