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by Ivan
Mon Jun 17, 2024 9:31 am
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: New Spectroheliograph construction (based on 102mm refractor)
Replies: 128
Views: 7260

Re: New Spectroheliograph construction (based on 102mm refractor)

Thank you so much for answering Rick! Yes, that's what I was trying to clarify. And how to insert an optical slit into the filter frame? Do you need some kind of copper substrate or something similar?

Your last image... I don't have enough words to express my delight. :bow :bow :bow

Ivan
by Ivan
Sun Jun 16, 2024 11:59 pm
Forum: Solar Radio, Magnetometry and Spectroscopy
Topic: New Spectroheliograph construction (based on 102mm refractor)
Replies: 128
Views: 7260

Re: New Spectroheliograph construction (based on 102mm refractor)

Rick, your images are phenomenal! I also want to build a SHG, could you tell me more about how to fix the gap.

an
by Ivan
Fri Jun 14, 2024 6:21 pm
Forum: SPoD Archive
Topic: Tall prom today - Ha Sun June 12, 2024
Replies: 17
Views: 338

Re: Tall prom today - Ha Sun June 12, 2024

Congratulations, Franco!
Great shot! An unreal sight, several thousand kilometers of incandescent plasma, monstrous power and grace.

Ivan
by Ivan
Wed Jun 12, 2024 10:09 am
Forum: Solar Reference Library
Topic: First tests --> Help in defining the non-uniform sweetspot of Lunt130MT etalons
Replies: 23
Views: 148

Re: Help in defining the non-uniform sweetspot of Lunt130MT etalons

Hello Alexandros! I can't open the video on Flickr. Looking at the picture, I have a good impression of your ds etalon. Number one is the best in my opinion. I think we can try to compensate for the uniformity of the strip with pressure. I've marked the areas that seem out of band to me. I am also n...
by Ivan
Wed Jun 12, 2024 10:09 am
Forum: This is SolarChat !!
Topic: First tests --> Help in defining the non-uniform sweetspot of Lunt130MT etalons
Replies: 23
Views: 758

Re: Help in defining the non-uniform sweetspot of Lunt130MT etalons

Hello Alexandros! I can't open the video on Flickr. Looking at the picture, I have a good impression of your ds etalon. Number one is the best in my opinion. I think we can try to compensate for the uniformity of the strip with pressure. I've marked the areas that seem out of band to me. I am also n...
by Ivan
Tue Jun 11, 2024 12:31 pm
Forum: This is SolarChat !!
Topic: Sun:Cak-White light-H-alpha:from Oleg in UKRAINE
Replies: 460
Views: 84780

Re: Sun:Cak-White light-H-alpha:from Oleg in UKRAINE

Hello Oleg! Beautiful pictures!!!! Granulation, Calcium, Ha - everything is very high quality and detailed. :bow I noticed that you stopped using your ds, why? Ivan Hello friend! Thank you very much! No am use double stack but this photos last year do it now processing their DATE > August 12.2023. ...
by Ivan
Tue Jun 11, 2024 7:53 am
Forum: This is SolarChat !!
Topic: Sun:Cak-White light-H-alpha:from Oleg in UKRAINE
Replies: 460
Views: 84780

Re: Sun:Cak-White light-H-alpha:from Oleg in UKRAINE

Hello Oleg!
Beautiful pictures!!!! Granulation, Calcium, Ha - everything is very high quality and detailed. :bow
I noticed that you stopped using your ds, why?

Ivan
by Ivan
Mon Jun 10, 2024 12:46 pm
Forum: SPoD Archive
Topic: Quick trip to the sun (h-alpha)
Replies: 18
Views: 204

Re: Quick trip to the sun (h-alpha)

Dennis, congratulations on the SPoD! Your pictures are fantastically beautiful! Can you share a photo of your setup?

Ivan
by Ivan
Fri Jun 07, 2024 10:51 pm
Forum: SPoD Archive
Topic: Animation flare 2.9
Replies: 27
Views: 663

Re: Animation flare 2.9

Fantastic capture Ivan! I am glad you got it and Congratulations for the well deserved SPOD!!! What are the etalons of your triple stack? During the very next days I will have an adapter ready to allow to use my DS Lunt etalon alone without the primary etalon (which is the problematic in the sense ...
by Ivan
Tue Jun 04, 2024 8:42 pm
Forum: Solar Scope Modifications
Topic: LS50 mod questions from a beginner
Replies: 6
Views: 637

Re: LS50 mod questions from a beginner

Hello! Your mod with two LS50 is very smart! It's great that you don't have internal reflection and red glow as mentioned here . As you have 2 Lunt LS50, did you notice a difference in terms of quality between them? From what I have read, it seems that you have to be lucky to get an etalon of good ...
by Ivan
Mon Jun 03, 2024 2:38 pm
Forum: This is SolarChat !!
Topic: mosaic and animation
Replies: 10
Views: 361

mosaic and animation

Hello everyone ! A mosaic and a short animation in which you can hardly see the plasma fountain. Ivan https://live.staticflickr.com/65535/53766937415_74b41689c2_o.jpg FD_28.05.24 by Ivan Sirotin , on Flickr https://live.staticflickr.com/65535/53766945845_e34309a729_o.gif 28.05.24 by Ivan Sirotin , o...
by Ivan
Mon Jun 03, 2024 9:28 am
Forum: This is SolarChat !!
Topic: three mosaics
Replies: 15
Views: 459

Re: three mosaics

These are amazing Ivan! Nice work Ivan. Your timing was spot on for that X-Class flare! Superb images, Ivan. The spectral resolution is phenomenal. Glad you're getting the best from your triple stack. Stu. Nice view Ivan! Great results, Ivan! Thanks for sharing! Thank you guys so much! :bow Ivan
by Ivan
Sun Jun 02, 2024 9:11 pm
Forum: This is SolarChat !!
Topic: 3 hours 18 minutes timelapse of AR13690 in H-Alpha 26th of May 2024
Replies: 18
Views: 1024

Re: 3 hours 18 minutes timelapse of AR13690 in H-Alpha 26th of May 2024

Well done, Arne, everything is very smooth. Huge amount of detail, good seeing and processing. The movement of the spicules on the limb is fascinating.

Ivan
by Ivan
Sun Jun 02, 2024 7:08 pm
Forum: This is SolarChat !!
Topic: Can I improve my problematic DS images in post-processing?
Replies: 17
Views: 738

Re: Can I improve my problematic DS images in post-processing?

Hello, Alexandros! I share your disappointment. I have always believed that large telescopes are designed to show the entire disk. There is nothing to add after Bob's recommendations. It may make sense to go through all the configuration steps first. Unscrew and remove the pistons, screw them back o...
by Ivan
Sun Jun 02, 2024 6:11 pm
Forum: This is SolarChat !!
Topic: Sun FD in H-Alpha, CaK and Continuum May 23rd 2024
Replies: 7
Views: 336

Re: Sun FD in H-Alpha, CaK and Continuum May 23rd 2024

Arne, a great result! I will not stop admiring your etalon!

Ivan
by Ivan
Sun Jun 02, 2024 4:02 pm
Forum: This is SolarChat !!
Topic: Sun in Ha 2nd June 2024
Replies: 17
Views: 537

Re: Sun in Ha 2nd June 2024

Stu, they're amazing! It's very impressive, I try to do what you do! :bow :bow :bow

Ivan
by Ivan
Fri May 31, 2024 9:48 pm
Forum: This is SolarChat !!
Topic: three mosaics
Replies: 15
Views: 459

Re: three mosaics

I reiterate Mark's comments, simply amazing resolution! Thanks a lot, Warren! I appreciate it. Ivan Ivan, Spectacular detail and resolution. Can you share details of scope setup and which camera you used? Clear Skies, Paulm Thanks a lot, Paulm! I am using a triplet stack created from two internal e...
by Ivan
Fri May 31, 2024 8:44 pm
Forum: This is SolarChat !!
Topic: three mosaics
Replies: 15
Views: 459

Re: three mosaics

Superb hi-res FD,Ivan. Petr Thank you so much, Petr! Ivan These are excellent Ivan! SHG levels of spectral resolution. What exposure time are you getting? Thank you so much, Mark! This is the best compliment! I'm trying to find a balance between noise and gain, now I'm trying to shoot at exposures ...
by Ivan
Fri May 31, 2024 3:04 pm
Forum: This is SolarChat !!
Topic: three mosaics
Replies: 15
Views: 459

three mosaics

Hello everyone, three mosaics from May 24, 25 and 27. The best seeing was on May 25th, this is probably my highest quality image for today. On May 27th there was a big boom of the X class. I put the Earth in there for the scale. Just in case, a link to this event: https://solarchatforum.com/viewtopi...
by Ivan
Wed May 29, 2024 3:36 pm
Forum: SPoD Archive
Topic: Animation flare 2.9
Replies: 27
Views: 663

Re: Animation flare 2.9

Thank you Guys so much!!!
:bow :bow :bow

Ivan
by Ivan
Wed May 29, 2024 3:36 pm
Forum: This is SolarChat !!
Topic: Animation flare 2.9
Replies: 21
Views: 961

Re: Animation flare 2.9

Thank you Guys so much!!!
:bow :bow :bow

Ivan
by Ivan
Wed May 29, 2024 8:02 am
Forum: This is SolarChat !!
Topic: Animation flare 2.9
Replies: 21
Views: 961

Re: Animation flare 2.9

pedro wrote: Tue May 28, 2024 12:57 pm Great animation Ivan
Thanks a lot, Pedro! The loops in your picture are fantastic, congratulations on the SPoD!

Ivan
by Ivan
Wed May 29, 2024 8:02 am
Forum: SPoD Archive
Topic: Animation flare 2.9
Replies: 27
Views: 663

Re: Animation flare 2.9

pedro wrote: Tue May 28, 2024 12:57 pm Great animation Ivan
Thanks a lot, Pedro! The loops in your picture are fantastic, congratulations on the SPoD!

Ivan
by Ivan
Tue May 28, 2024 1:46 pm
Forum: SPoD Archive
Topic: Animation flare 2.9
Replies: 27
Views: 663

Re: Animation flare 2.9

ffellah wrote: Tue May 28, 2024 10:38 am Great catch Ivan ! Love it, what an explosion 💥

Franco
Thank you very much, Franco, I didn't expect this myself.

Ivan
by Ivan
Tue May 28, 2024 1:46 pm
Forum: This is SolarChat !!
Topic: Animation flare 2.9
Replies: 21
Views: 961

Re: Animation flare 2.9

ffellah wrote: Tue May 28, 2024 10:38 am Great catch Ivan ! Love it, what an explosion 💥

Franco
Thank you very much, Franco, I didn't expect this myself.

Ivan
by Ivan
Tue May 28, 2024 12:04 pm
Forum: This is SolarChat !!
Topic: Animation flare 2.9
Replies: 21
Views: 961

Re: Animation flare 2.9

Peterm wrote: Tue May 28, 2024 10:12 am OH wow not only lucky but what a fantastic catch Ivan! This is the first amateur animation I have seen that caught it and the aftermath, you have absolutely nailed it! BravO!
Thanks a lot, Peter! Yes, it's a great luck to catch the X class in profile. :bow

Ivan
by Ivan
Tue May 28, 2024 12:04 pm
Forum: SPoD Archive
Topic: Animation flare 2.9
Replies: 27
Views: 663

Re: Animation flare 2.9

Peterm wrote: Tue May 28, 2024 10:12 am OH wow not only lucky but what a fantastic catch Ivan! This is the first amateur animation I have seen that caught it and the aftermath, you have absolutely nailed it! BravO!
Thanks a lot, Peter! Yes, it's a great luck to catch the X class in profile. :bow

Ivan
by Ivan
Tue May 28, 2024 9:45 am
Forum: This is SolarChat !!
Topic: Animation flare 2.9
Replies: 21
Views: 961

Animation flare 2.9

Hello everyone Yesterday I was lucky enough to see flare 2.9. The animation covers the period from 06:54 (flare C9) to 7:46 (M 5.8). The interval is 20 seconds, although the event itself was extremely fast and could be filmed without delay at all. Recording each file takes about 7 seconds. Many than...
by Ivan
Tue May 28, 2024 9:45 am
Forum: SPoD Archive
Topic: Animation flare 2.9
Replies: 27
Views: 663

Animation flare 2.9

Hello everyone Yesterday I was lucky enough to see flare 2.9. The animation covers the period from 06:54 (flare C9) to 7:46 (M 5.8). The interval is 20 seconds, although the event itself was extremely fast and could be filmed without delay at all. Recording each file takes about 7 seconds. Many than...
by Ivan
Fri May 24, 2024 3:17 pm
Forum: SPoD Archive
Topic: Early Morning NW Filaprom( animation added )
Replies: 15
Views: 828

Re: Early Morning NW Filaprom( animation added )

Wonderful animation, Martin! Congratulations on the SPoD!

Ivan
by Ivan
Fri May 24, 2024 12:44 pm
Forum: This is SolarChat !!
Topic: Two mosaics in a triple stack
Replies: 4
Views: 437

Two mosaics in a triple stack

Hello everyone, two mosaics from May 21st and 22nd. Seeing is getting worse. https://live.staticflickr.com/65535/53743252164_306ce93929_o.jpg FD_21.05.24 by Ivan Sirotin , on Flickr https://live.staticflickr.com/65535/53743521635_9d661595f2_o.jpg FD_22.05.24 by Ivan Sirotin , on Flickr Ivan
by Ivan
Fri May 24, 2024 10:59 am
Forum: This is SolarChat !!
Topic: triple stack mosaic from May 20th
Replies: 14
Views: 894

Re: triple stack mosaic from May 20th

Very nice indeed. Stu. Thanks a lot, Stuart! Your FDs are great! Ivan That's a beauty Ivan! Thanks a lot, Mark! Ivan Looks good, Ivan! Thank you very much, my friend! Ivan You have been getting some absolutely superb full discs this year Ivan :bow :hamster: :bow Can you remind me what size the trip...
by Ivan
Mon May 20, 2024 6:17 pm
Forum: This is SolarChat !!
Topic: triple stack mosaic from May 20th
Replies: 14
Views: 894

Re: triple stack mosaic from May 20th

pupak wrote: Mon May 20, 2024 1:12 pm Superb mosaic,Ivan.
Petr
Thanks a lot, Petr, I appreciate your opinion. I often watch your close-ups, and I also want to start making them, but I don't dare.

Ivan
by Ivan
Mon May 20, 2024 12:57 pm
Forum: This is SolarChat !!
Topic: triple stack mosaic from May 20th
Replies: 14
Views: 894

triple stack mosaic from May 20th

Hello everyone A new mosaic from May 20th. Good day, many events.

ImageFD_20.05.24 by Ivan Sirotin, on Flickr

Ivan
by Ivan
Sun May 19, 2024 8:14 pm
Forum: Solar Scope Modifications
Topic: LS50 mod questions from a beginner
Replies: 6
Views: 637

Re: LS50 mod questions from a beginner

I also recommend you to study these topics.

You will understand how to correctly find the distance at which etalon should be located on the new telescope:
viewtopic.php?t=19238

Mod of two ds Lunt 80 modules:
viewtopic.php?t=32743

Ivan
by Ivan
Sun May 19, 2024 2:13 pm
Forum: Solar Scope Modifications
Topic: LS50 mod questions from a beginner
Replies: 6
Views: 637

Re: LS50 mod questions from a beginner

To the first question, yes. The internal etalon Lunt 50 is better used on the f7 lens. I don't have a Quark. If we talk about the possibility of using Quark with different lenses, then, yes, it is more versatile. But it's not easy to get a good Quark, you may be unlucky and the band will be too wide...
by Ivan
Sun May 19, 2024 9:19 am
Forum: This is SolarChat !!
Topic: FD mosaic triplestack
Replies: 13
Views: 848

Re: FD mosaic triplestack

ffellah wrote: Sat May 18, 2024 10:00 am What a wonderful full disk, Ivan ! Perfection.
Franco


Many thanks to Franco! :bow

Ivan
marktownley wrote: Sat May 18, 2024 11:17 am Lovely disk thanks Ivan!


Thanks, Mark, I appreciate it. Congratulations on SPoD!

Ivan
by Ivan
Sat May 18, 2024 6:08 pm
Forum: SPoD Archive
Topic: CaK Full Disk and Post Flare Loops x2 15th May
Replies: 32
Views: 1219

Re: CaK Full Disk and Post Flare Loops x2 15th May

Congratulations, Mark! Very impressive!

Ivan
by Ivan
Sat May 18, 2024 9:22 am
Forum: This is SolarChat !!
Topic: FD mosaic triplestack
Replies: 13
Views: 848

Re: FD mosaic triplestack

Brilliant result Ivan! Thank you very much, Petrus! I was lucky with seeing. Ivan Hi Ivan, Excellent result Thank you very much, Rainer! Your FD's have been inspiring me all this time. Ivan Absolutely stunning FD image Ivan! Agreed!!  :bow James, thank you very much! The sun was very photogenic. Iv...
by Ivan
Sat May 18, 2024 5:48 am
Forum: Solar Scope Modifications
Topic: LS50 mod questions from a beginner
Replies: 6
Views: 637

Re: LS50 mod questions from a beginner

Hello and welcome! Yes, etalon is easy to unscrew, there is no glue (I have two Lunt 50). Modern modular LS60 are also easy to modify, they have more etalon, but they also cost more. For visual and photo it is better to have an ERF. Some, including me, don't use it, but I use 2" CLS before etal...
by Ivan
Fri May 17, 2024 5:19 pm
Forum: This is SolarChat !!
Topic: FD mosaic triplestack
Replies: 13
Views: 848

Re: FD mosaic triplestack

pupak wrote: Fri May 17, 2024 11:22 am Superb FD, Ivan.
Petr
Thanks a lot, Petr!

Ivan
by Ivan
Fri May 17, 2024 5:12 pm
Forum: Solar Scope Modifications
Topic: Future-proof DS mod options for Lunt LS50 and Svbony 102mm
Replies: 5
Views: 531

Re: Future-proof DS mod options for Lunt LS50 and Svbony 102mm

Hi! I am not a pro in this field, but I can tell you about my experience.  I also have a Lunt50, and I started with it, then I modified my WO Megrez90 and added etalon Lunt50 to it. I did not use an external erf, instead I installed 2" cls in front of the red erf Lunt. I can't recommend doing t...
by Ivan
Fri May 17, 2024 2:29 pm
Forum: This is SolarChat !!
Topic: FD mosaic triplestack
Replies: 13
Views: 848

Re: FD mosaic triplestack

Peterm wrote: Fri May 17, 2024 11:16 am Absolutely stunning FD image Ivan!
Thanks a lot, Peter! Congratulations on SPoD!!

Ivan
by Ivan
Fri May 17, 2024 11:08 am
Forum: This is SolarChat !!
Topic: FD mosaic triplestack
Replies: 13
Views: 848

FD mosaic triplestack

Hello everyone,
А small mosaic on May 17th. We finally have spring and warmth.

ImageFD_17.05.24 by Ivan Sirotin, on Flickr

Ivan
by Ivan
Thu May 16, 2024 12:31 pm
Forum: SPoD Archive
Topic: Crazy crazy night of Aurora in Canada
Replies: 9
Views: 299

Re: Crazy crazy night of Aurora in Canada

They are incredibly beautiful, each one is worthy of SPoD!

Ivan
by Ivan
Thu May 16, 2024 6:36 am
Forum: This is SolarChat !!
Topic: May 15 2024 Observations. X2.99 Flare and Loops!
Replies: 6
Views: 489

Re: May 15 2024 Observations. X2.99 Flare and Loops!

Hi James, great description! I'm glad you saw it. In the green SDO pictures, these flares look like the Sun turned on the turn signal.

Ivan
by Ivan
Wed May 15, 2024 9:11 pm
Forum: This is SolarChat !!
Topic: Aurora from Lowndesville S.C. at 34 North latitude!
Replies: 16
Views: 884

Re: Aurora from Lowndesville S.C. at 34 North latitude!

What beautiful photos, what an exciting event. You are very lucky, and I am happy for you, my friend!

Ivan
by Ivan
Wed May 15, 2024 4:53 pm
Forum: This is SolarChat !!
Topic: High res Ha of AR3674 with 150mm
Replies: 10
Views: 565

Re: High res Ha of AR3674 with 150mm

Wow, super contrast! Could you tell me about your refractor?

Ivan
by Ivan
Wed May 15, 2024 4:50 pm
Forum: This is SolarChat !!
Topic: 15th May more X class flares today
Replies: 8
Views: 454

Re: 15th May more X class flares today

Well done, Robert! :bow

Ivan