Search found 532 matches

by christian viladrich
Wed Aug 14, 2019 6:58 pm
Forum: This is SolarChat !!
Topic: HR granulation with the 300 mm Newtonian - St Véran
Replies: 13
Views: 178

Re: HR granulation with the 300 mm Newtonian - St Véran

Thanks to all !
Today was no good. We hope to-morow will be better.
Best wishes
by christian viladrich
Tue Aug 13, 2019 8:29 pm
Forum: This is SolarChat !!
Topic: HR granulation with the 300 mm Newtonian - St Véran
Replies: 13
Views: 178

HR granulation with the 300 mm Newtonian - St Véran

Dear All, Nice seeing condition this morning at St Véran (2930 mm) with the Newton 300 mm. This image was taken with an Andover 396 - 5 nm which appears to give excellent results. More to come in the next days. http://www.astrosurf.com/viladrich/astro/soleil/wl/2019/13August2019-8h16minUT-N300-396-5...
by christian viladrich
Wed Aug 07, 2019 7:39 pm
Forum: This is SolarChat !!
Topic: Very small active region C8 EdgeHD Ha Aug 6
Replies: 9
Views: 133

Very small active region C8 EdgeHD Ha Aug 6

Dear All, Here are two images taken in Ha of one of the very small "active "region visible on August 6. The first one is at F/27 : http://astrosurf.com/viladrich/astro/soleil/wl/2019/Ha-6August2019-8h27minUT-C8-B1920.jpg I tried F/35 for the second one (I was very ambitious ...) with resize 85%. The...
by christian viladrich
Tue Aug 06, 2019 9:04 am
Forum: This is SolarChat !!
Topic: Ha HR details on a Sun with no detail - 4 August - C8 EdgeHD
Replies: 7
Views: 158

Re: Ha HR details on a Sun with no detail - 4 August - C8 EdgeHD

Thanks to all :-)
With the activity so low, I kind of like the polar regions.
by christian viladrich
Tue Aug 06, 2019 9:03 am
Forum: This is SolarChat !!
Topic: New pore 2019 08 5 and prom
Replies: 7
Views: 130

Re: New pore 2019 08 5 and prom

Nice to see some activity again, and pretty good images !
by christian viladrich
Tue Aug 06, 2019 9:01 am
Forum: This is SolarChat !!
Topic: Cak Chromosphere
Replies: 12
Views: 189

Re: Cak Chromosphere

It's quite good for 110 mm !
by christian viladrich
Tue Aug 06, 2019 8:59 am
Forum: This is SolarChat !!
Topic: Double Disks - Tuesday 6th August
Replies: 4
Views: 70

Re: Double Disks - Tuesday 6th August

Nice images Mark !
by christian viladrich
Sun Aug 04, 2019 8:40 pm
Forum: This is SolarChat !!
Topic: Ha 26.07.2019
Replies: 10
Views: 207

Re: Ha 26.07.2019

Well done Josef. The resolution is excellent !
Christian
by christian viladrich
Sun Aug 04, 2019 8:39 pm
Forum: This is SolarChat !!
Topic: CaK – 30th July
Replies: 8
Views: 185

Re: CaK – 30th July

Hello Franck,
You might try to install a thermal probe next to the mirror. You could then check whether this is an issue with tube turbulence.
Best regards
Christian
by christian viladrich
Sun Aug 04, 2019 8:36 pm
Forum: This is SolarChat !!
Topic: Proms from July 30
Replies: 10
Views: 187

Re: Proms from July 30

Nice proms Lou,
You are ready for the big one :-)
Best regards
Christian
by christian viladrich
Sun Aug 04, 2019 8:35 pm
Forum: This is SolarChat !!
Topic: 2" thread/M48 thread
Replies: 7
Views: 170

Re: 2" thread/M48 thread

Maybe, have a look at Telescope Service, they have a lot of adapters. I have not checked whether they have that one.
Best regards
Christian
by christian viladrich
Sun Aug 04, 2019 8:33 pm
Forum: This is SolarChat !!
Topic: Friday Sun 2nd August '19_Updated with new images
Replies: 20
Views: 258

Re: Friday Sun 2nd August '19_Updated with new images

Hello Stu,
This is an excellent set of images. The Ca K at full aperture is quie good !
Best regards
Christian
by christian viladrich
Sun Aug 04, 2019 8:29 pm
Forum: This is SolarChat !!
Topic: Sol from the 3rd of August 2019.
Replies: 4
Views: 87

Re: Sol from the 3rd of August 2019.

Hello Eric,
This is a beautiful FD image. Incredible what a 40 mm DS can do.
Christian
by christian viladrich
Sun Aug 04, 2019 8:26 pm
Forum: This is SolarChat !!
Topic: Ha HR details on a Sun with no detail - 4 August - C8 EdgeHD
Replies: 7
Views: 158

Ha HR details on a Sun with no detail - 4 August - C8 EdgeHD

Dear all, As often said by Valery, aperture gives us access to some details even when there is no detail on the solar disk :-) Here are two images taken this morning (it was so hot ...). Somewhere near the middle of the solar disk : http://astrosurf.com/viladrich/astro/soleil/wl/2019/Ha-4August2019-...
by christian viladrich
Mon Jun 03, 2019 6:14 pm
Forum: Solar Astronomy Shop and Swap
Topic: Wanted : Lumicon prominence solar filter
Replies: 0
Views: 185

Wanted : Lumicon prominence solar filter

Hello,
I am looking for a Lumicon prominence solar filter.
Thanks !
Christian
by christian viladrich
Sun Jun 02, 2019 9:16 am
Forum: Solar Astronomy Shop and Swap
Topic: "Astronomie Solaire" - New (French) book on Solar Observation now available
Replies: 18
Views: 1803

Re: "Astronomie Solaire" - New (French) book on Solar Observation now available

Hello Ronnie,
We are still on track for next Christmass :-)
Best regards
Christian
by christian viladrich
Wed May 22, 2019 6:52 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: cak present and past
Replies: 49
Views: 1446

Re: cak present and past

I love these old plates. Well done !
by christian viladrich
Wed May 22, 2019 6:51 pm
Forum: Solar Scope Modifications
Topic: 150 mm Solar Newton
Replies: 50
Views: 2242

Re: 150 mm Solar Newton

Hello Bart,
I like your filter support system :-)
I have made no progress on my side since I was busy on other things. I've got to get into this in June.
BTW, did you observe any temperature issue with the filter ?
Best regards
Christian
by christian viladrich
Sat May 11, 2019 9:17 am
Forum: This is SolarChat !!
Topic: AR2740 and 2741 in CaK, 09052019
Replies: 11
Views: 418

Re: AR2740 and 2741 in CaK, 09052019

So did you find a significant improvement ?
by christian viladrich
Sat May 11, 2019 9:16 am
Forum: This is SolarChat !!
Topic: AR2740 & 2741 in Ha with the C8 EdgeHD on May 10
Replies: 8
Views: 350

Re: AR2740 & 2741 in Ha with the C8 EdgeHD on May 10

Thanks guys :-)

The F/35 gives a narrower effective bandpass. The effective bandpass of a 0.3 A filter is about 0.5A at F/27 and 0.4A at F/35 :
Image
I have a test image comparing both F-ratio somewhere on my website.
by christian viladrich
Sat May 11, 2019 9:12 am
Forum: This is SolarChat !!
Topic: Early Doors 11/5/2019
Replies: 7
Views: 285

Re: Early Doors 11/5/2019

Excellent indeed !
by christian viladrich
Sat May 11, 2019 9:11 am
Forum: This is SolarChat !!
Topic: May 10th Spots
Replies: 13
Views: 398

Re: May 10th Spots

Beautifull images and processing !
by christian viladrich
Fri May 10, 2019 8:39 pm
Forum: This is SolarChat !!
Topic: Quick session this morning May 7th
Replies: 23
Views: 669

Re: Quick session this morning May 7th

Nice set of images ! You can probably remove the 0.7 reducer next time.
by christian viladrich
Fri May 10, 2019 8:37 pm
Forum: This is SolarChat !!
Topic: Animation: Cinco de Mayo Fireworks
Replies: 14
Views: 463

Re: Animation: Cinco de Mayo Fireworks

Well done Christophe !
It looks as if the large prominence on the limb has some connection with some of the filaments from the sunspot ?
by christian viladrich
Fri May 10, 2019 8:33 pm
Forum: This is SolarChat !!
Topic: AR2740 and 2741 in CaK, 09052019
Replies: 11
Views: 418

Re: AR2740 and 2741 in CaK, 09052019

Well done Bart !
Is it with the change of distance between the lenses ?