Solar imaging by Star Hunter

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Star Hunter
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Solar imaging by Star Hunter

Post by Star Hunter »

Hello! My name is RUSLAN ILNITSKY, I am an astrophotographer and my specialization is solar capturing. I am owner of the Coronado PST H-alpha 40 mm telescope since 2011. In this topic I will be glad to share my photos of the Sun, as well as my own knowledge of shooting and image processing.

H-alpha - December 20, 2022, 10:16 (UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Continuum - December 20, 2022, 10:09 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CaK - December 20, 2022, 10:05 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
Attachments
Capture 10_16_50_pipp_l8_ap1792 as7.jpg
Capture 10_16_50_pipp_l8_ap1792 as7.jpg (1.71 MiB) Viewed 2849 times
Capture 10_09_03_pipp_l2_ap3447 as cm 5.jpg
Capture 10_09_03_pipp_l2_ap3447 as cm 5.jpg (1.35 MiB) Viewed 2849 times
Capture 10_05_03_pipp_l2_ap3453 as CM29.jpg
Capture 10_05_03_pipp_l2_ap3453 as CM29.jpg (1.26 MiB) Viewed 2849 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Welcome to the forum Ruslan. These are very nice images. I see you have a Antlia K-Line wedge. That's one of the best images I have seen taken with one! The faculae are well shown across the disk.

James


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
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Losmandy AZ8 Alt/Az Mount
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Re: Solar imaging by Star Hunter

Post by rigel123 »

Welcome to the forum Ruslan! Very nice images! Where are you located?


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

DeepSolar64 wrote: Wed Dec 21, 2022 5:55 pm Welcome to the forum Ruslan. These are very nice images. I see you have a Antlia K-Line wedge. That's one of the best images I have seen taken with one! The faculae are well shown across the disk.

James
I bought this filter a couple of months ago. To be honest, I expected a higher contrast. I have to improve it with the help of software - the Contrast Master program helps a lot with this. Someday I will still buy a Lunt Cak, but with a limited budget, Antlia is a good choice. So to speak, calcium for beginners.
rigel123 wrote: Wed Dec 21, 2022 6:45 pm Welcome to the forum Ruslan! Very nice images! Where are you located?
I am from Russia, Anapa. This is the seaside of the Black Sea. There are a lot of clear days here, about 300 per year. Therefore, whenever possible, I try to capture the Sun.


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Ruslan,
To get the higher contrast you would have to go to an ultra-narrowband filter like a Lunt CaK module or a CaK or CaH DayStar Quark which are much more expensive. The Antlia K-line wedge is good for the money though.

James


Lunt 8x32 SUNoculars
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Losmandy AZ8 Alt/Az Mount
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Re: Solar imaging by Star Hunter

Post by rigel123 »

rigel123 wrote: Wed Dec 21, 2022 6:45 pm Welcome to the forum Ruslan! Very nice images! Where are you located?
I am from Russia, Anapa. This is the seaside of the Black Sea. There are a lot of clear days here, about 300 per year. Therefore, whenever possible, I try to capture the Sun.
[/quote]

Wow, 300 days a year, that is amazing! I looked at some images of Anapa, looks like an amazing city.


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Meade ETX LS6
Lunt CaK BF1200
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Re: Solar imaging by Star Hunter

Post by Montana »

A very warm and sunny welcome :hamster:

Wow! these are truly wonderful images, all have beautiful detail and processing, top work!

:bow :hamster:

Alexandra


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Re: Solar imaging by Star Hunter

Post by ffellah »

Very nice images, Ruslan.

Franco


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Re: Solar imaging by Star Hunter

Post by arnedanielsen »

Warm welcome and thanks for sharing you wonderful images, Ruslan!

Best regards,
Arne


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

Thanks to everyone for the warm welcome! The weather was clear this morning, I managed to photograph the Sun. Now there are many sunspots and several large prominences.

I hope the files in the attachment are not too big to see. If something is wrong - let me know, then I will upload them in half size.

H-alpha - December 22, 2022, 10:27 (UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Continuum - December 22, 2022, 10:32 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CaK - December 22, 2022, 10:35 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
Attachments
Capture 10_27_50_pipp_l8_ap1773.jpg
Capture 10_27_50_pipp_l8_ap1773.jpg (1.62 MiB) Viewed 2724 times
Capture 10_32_03_pipp_l2_ap3443.jpg
Capture 10_32_03_pipp_l2_ap3443.jpg (1.32 MiB) Viewed 2724 times
Capture 10_35_09_pipp_l2_ap3451.jpg
Capture 10_35_09_pipp_l2_ap3451.jpg (1.54 MiB) Viewed 2724 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

These are really nice. I really like how much better the Antlia K-line filter shows the faculae Vs the Baader Continuum filter.

James


Lunt 8x32 SUNoculars
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Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
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Re: Solar imaging by Star Hunter

Post by Star Hunter »

DeepSolar64 wrote: Thu Dec 22, 2022 5:19 pm These are really nice. I really like how much better the Antlia K-line filter shows the faculae Vs the Baader Continuum filter.

James
Yes, but resolution with Solar Continuum is better. However, I'm glad that with the complete set of H-alpha\Continuum\Calcium, I can make multispectral images in just a couple of minutes.

For example - data from October 04, 22, combination of three images, where the red channel is H-alpha, the green channel is Continuum, the blue channel is Cak.
Coronado PST 40 mm for H-alpha, Levenhuk Ra R66 ED + Lacerta Herschel prism for Continuum and Cak, QHY5III178m camera.
Attachments
H-alpha-Continuum-Cak-2022-10-04-2.jpg
H-alpha-Continuum-Cak-2022-10-04-2.jpg (1.92 MiB) Viewed 2713 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Nice!

I want one of those Antlia filters because they show the photospheric faculae better than the Baader 540nm filter does. The Antlia CaK wedge is a relatively wide band device and shows primarily features of the photosphere compared to a Lunt CaK module which shows much more of the lower chromosphere and transition region. And at a higher contrast.

Are you stopping your scope down while using the Antlia wedge? Though it may dim the image a bit it may increase contrast if you do. The closest I come to the Antlia filter is an Edmund 430nm Gband filter. 10nm wide bandpass.

James


Lunt 8x32 SUNoculars
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Losmandy AZ8 Alt/Az Mount
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Re: Solar imaging by Star Hunter

Post by Star Hunter »

DeepSolar64 wrote: Thu Dec 22, 2022 5:58 pm Nice!
Are you stopping your scope down while using the Antlia wedge? Though it may dim the image a bit it may increase contrast if you do. The closest I come to the Antlia filter is an Edmund 430nm Gband filter. 10nm wide bandpass.

James
Nope, it works at full aperture (66 mm, f\6). You literally read my mind - today, when shooting, I thought about the aperture for the lens. If the sky is clear tomorrow, I will definitely try to reduce the aperture to at least 40 mm.

Previously, I used a stack of filters ZWB2 + NPZ SZS-22 for shooting in ultraviolet. The result was similar to the Cak filter, but with worse contrast. However, such ZWB2 + SZS-22 costs 30 times cheaper than Antlia.
https://star-hunter.ru/en/sun-2022-05-11/
https://star-hunter.ru/en/sun-2021-09-07/
https://star-hunter.ru/en/2020-11-05-sunspot-ar2781/
Attachments
Antlia-Cak test.jpg
Antlia-Cak test.jpg (181.24 KiB) Viewed 2699 times


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Re: Solar imaging by Star Hunter

Post by Ivan »

Ruslan, hello!
Welcome to the forum!

Ivan


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Re: Solar imaging by Star Hunter

Post by MAURITS »

Welcome to the forum Ruslan, nice to see your images.


Regards,
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Re: Solar imaging by Star Hunter

Post by Star Hunter »

Ivan, MUARITS, thanks! I hope I can find here like-minded people in my hobby and gain new experience in shooting the Sun.


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Re: Solar imaging by Star Hunter

Post by Averton »

Great images Ruslan - nice to meet you!
As has been said, your images with the Antlia 3nm filter have to be the best ones we have seen. We have looked at that filter ourselves and searched the web to find any reasonable images with it. If we'd seen your images we would probably have purchased it. Well done!
There is some great info on your website. We liked the article on imaging Venus and Mercury during the day. This is something we have been meaning to do for sometime. Also we would be interested in knowing more about your filter testing setup.


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

Hi, Averton! I am glad that my website was useful to you. About Antlia filter - i think, it has lower contrast (still wide band 3 nm) than Lunt or Coronado Cak - i need to enhance the contrast by Adobe Camera Raw or Contrast Master software. Active regions are visible with it, but the photosphere is still too bright. However, it is one of the most affordable calcium filters along with Baader. The next step is already Lunt Cak.

You can try to process stack of 250 frames from Antlia filter (66\400 ED telescope, Lacerta wedge, ND filter). Please note that when shooting, I set the maximum offset. Because of this, the contrast can appear especially low. It is only stack without wavelet or deconvolution.
https://star-hunter.ru/wp-content/uploa ... ap3451.tif
My version of processing is here viewtopic.php?p=366100#p366100


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Re: Solar imaging by Star Hunter

Post by Averton »

Star Hunter wrote: Fri Dec 23, 2022 12:23 am Hi, Averton! I am glad that my website was useful to you. About Antlia filter - i think, it has lower contrast (still wide band 3 nm) than Lunt or Coronado Cak - i need to enhance the contrast by Adobe Camera Raw or Contrast Master software. Active regions are visible with it, but the photosphere is still too bright. However, it is one of the most affordable calcium filters along with Baader. The next step is already Lunt Cak.

You can try to process stack of 250 frames from Antlia filter (66\400 ED telescope, Lacerta wedge, ND filter). Please note that when shooting, I set the maximum offset. Because of this, the contrast can appear especially low. It is only stack without wavelet or deconvolution.
https://star-hunter.ru/wp-content/uploa ... ap3451.tif
My version of processing is here viewtopic.php?p=366100#p366100
Thanks Ruslan, we'll have a go at processing your data and see what we can come up with.


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Re: Solar imaging by Star Hunter

Post by Montana »

Super additions :bow :hamster:

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Re: Solar imaging by Star Hunter

Post by Star Hunter »

DeepSolar64 wrote: Thu Dec 22, 2022 5:58 pm Are you stopping your scope down while using the Antlia wedge? Though it may dim the image a bit it may increase contrast if you do.

James
Thanks for the advice. Stopping the aperture to 38 mm made it possible to noticeably improve image sharpness to the level with the Solar Continuum filter at the same focal length.
Attachments
Capture 10_26_13 dia_pipp_l2_ap2381 as2.jpg
Capture 10_26_13 dia_pipp_l2_ap2381 as2.jpg (165.92 KiB) Viewed 2567 times


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

H-alpha - December 24, 2022, 10:14 (UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Continuum - December 24, 2022, 10:18 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CaK - December 24, 2022, 10:26 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope (with aperture diaphragm 38 mm)
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
Attachments
Capture 10_14_31_pipp_l8_ap2425.jpg
Capture 10_14_31_pipp_l8_ap2425.jpg (1.42 MiB) Viewed 2561 times
Capture 10_18_51_pipp_l2_ap2368 as acr7.jpg
Capture 10_18_51_pipp_l2_ap2368 as acr7.jpg (1.4 MiB) Viewed 2561 times
Capture 10_26_13 dia_pipp_l2_ap2381 as54.jpg
Capture 10_26_13 dia_pipp_l2_ap2381 as54.jpg (1.5 MiB) Viewed 2561 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Star-Hunter,
I have seen a lot on here of others using stop-down masks to increase contrast in solar images, especially in CaK. It also increases the effective focal ratio of the telescope. I can see the difference in your 540nm continuum image too!

Nice three light images. Again I really notice the CaK3nm image. Nice faculae marking those active regions!! I also notice granulation. It's most likely granulation of the photosphere but I do wonder if you may be picking up some supergranulation of the lower chromosphere as well.

Merry Christmas!

James


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
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Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
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Re: Solar imaging by Star Hunter

Post by Montana »

Some more great additions, such a delight to view :bow :hamster:

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Re: Solar imaging by Star Hunter

Post by Star Hunter »

A few past, but interesting shots. It was very cloudy, I had to catch the sun between the clouds. Nevertheless, we managed to catch fragments of a clear sky.
Solar eclipse, October 25, 2022.

H-alpha - 13:53 (UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 100 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Continuum - 12:50 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 100 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CaK - 13:57 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-GSO polarizing filter
-QHY5III178m camera.
Stacking of 100 frames.
Attachments
Capture-13_53_56_F0346-1192_l8_ap1079-2.jpg
Capture-13_53_56_F0346-1192_l8_ap1079-2.jpg (1.03 MiB) Viewed 3042 times
Capture-12_50_52_F2700-3200_pipp_l2_ap8989.jpg
Capture-12_50_52_F2700-3200_pipp_l2_ap8989.jpg (1.91 MiB) Viewed 3042 times
Capture-13_57_01_F0001-1000_l2_ap2358.jpg
Capture-13_57_01_F0001-1000_l2_ap2358.jpg (1.36 MiB) Viewed 3042 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Very nice on all three eclipse images. You got it with the CaK3nm Antlia wedge too!!


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Re: Solar imaging by Star Hunter

Post by Peterm »

Nice images Ruslan, welcome from me Down Under!


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Re: Solar imaging by Star Hunter

Post by MapleRidge »

Very sharp set of images Ruslan...well done :bow

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Re: Solar imaging by Star Hunter

Post by Star Hunter »

H-alpha - January 17, 2023, 10:41(UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Continuum - January 17, 2023, 10:46 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CaK - January 17, 2023, 10:49 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
Attachments
Capture 10_41_14_pipp_l8_ap2422 as cr6.jpg
Capture 10_41_14_pipp_l8_ap2422 as cr6.jpg (1.83 MiB) Viewed 2983 times
Capture 10_46_59_pipp_l2_ap2363 as7.jpg
Capture 10_46_59_pipp_l2_ap2363 as7.jpg (1.17 MiB) Viewed 2983 times
Capture 10_49_17_pipp_l2_ap2380 as7.jpg
Capture 10_49_17_pipp_l2_ap2380 as7.jpg (1.48 MiB) Viewed 2983 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

This is an excellent 3 light lineup. I especially like the Antlia 3nm bandpass CaK image.

Very nicely done!!


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Re: Solar imaging by Star Hunter

Post by Averton »

Nice comparison in wavelengths there Ruslan.
Just a suggestion, but why not start a "New Topic" when you have had another imaging session so your new images don't get lost in a long topic.
Have you caught the NW prom lifting off? It looks very faint in your Ha image.


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

DeepSolar64 wrote: Wed Jan 18, 2023 3:48 am This is an excellent 3 light lineup. I especially like the Antlia 3nm bandpass CaK image.
Very nicely done!!
Yes, interesting details appear in calcium compared to the continuum. However, this is not Lant :) I'm thinking about making a Sol'Ex.
Averton wrote: Wed Jan 18, 2023 5:15 am Nice comparison in wavelengths there Ruslan.
Just a suggestion, but why not start a "New Topic" when you have had another imaging session so your new images don't get lost in a long topic.
Have you caught the NW prom lifting off? It looks very faint in your Ha image.
I think that when I create a new topic, the image will then be lost for sure. And so all my images are in one topic, especially since I often photograph the Sun.

The prominence on NW turned out to be weaker than I thought. Maybe I missed all the fun :D


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

Fresh active Sun after cloudy days!

H-alpha - February 13, 2023, 10:44 (UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Continuum - February 13, 2023, 10:49 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CaK - February 13, 2023, 10:53 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
Attachments
Capture 10_44_25_pipp_l8_ap2425.jpg
Capture 10_44_25_pipp_l8_ap2425.jpg (1.6 MiB) Viewed 2889 times
Capture 10_49_10.jpg
Capture 10_49_10.jpg (1.55 MiB) Viewed 2889 times
Capture 10_53_56_pipp_l2_ap2364.jpg
Capture 10_53_56_pipp_l2_ap2364.jpg (1.45 MiB) Viewed 2889 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Are you using an Antlia 3nm bandpass filter for your CaK? It looks good! :bow


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Re: Solar imaging by Star Hunter

Post by marktownley »

Good additions Ruslan!


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

Synthesized RGB image based on H-alpha, continuum and calcium filters data from this post viewtopic.php?p=371947#p371947 (February 13, 2023).
R - Coronado PST H-alpha 40 mm
G - 66ED + Baader Continuum
B - 66ED + Antlia Cak.
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RGB.jpg
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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

I love the composite!! Two thumbs up!!


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Re: Solar imaging by Star Hunter

Post by cte »

Very good Ruslan, I love the ultraviolet images and the vivid color tune you used in your processing. Really shines


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Re: Solar imaging by Star Hunter

Post by Averton »

Good images Ruslan!


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

The Sun, February 23, 2023, 12:59 (UTC +3)
Equipment:
-Celestron 102 SLT telescope
-Celestron Nexstar SE mount
-Lacerta Herschel prism
-ND3 filter
-Baader Solar Continuum filter
–ZWO ASI 183MC camera
Stacking of 100 frames.
Attachments
Capture 12_59_01_pipp_l2_ap6298 as16.jpg
Capture 12_59_01_pipp_l2_ap6298 as16.jpg (1.61 MiB) Viewed 2807 times


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Re: Solar imaging by Star Hunter

Post by marktownley »

Nice addition!


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

H-alpha - March 8, 2023, 09:00 (UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Continuum - March 8, 2023, 09:06 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Baader Solar Continuum filter
-ND3 filter
-QHY5III178m camera.
Stacking of 250 frames.
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
CaK - March 8, 2023, 09:08 (UTC +3)
Equipment:
-Levenhuk Ra R66 ED Doublet Black telescope
-Sky-Watcher AZ-GTi mount
-Lacerta Herschel prism
-Antlia CaK 3nm 393.3nm filter
-ND96-09 filter
-QHY5III178m camera.
Stacking of 250 frames.
Attachments
Capture 09_00_18_pipp_l8_ap2393.jpg
Capture 09_00_18_pipp_l8_ap2393.jpg (1.62 MiB) Viewed 2743 times
Capture 09_06_00_pipp_l2_ap5301.jpg
Capture 09_06_00_pipp_l2_ap5301.jpg (1.65 MiB) Viewed 2743 times
Capture 09_08_34_pipp_l2_ap5315.jpg
Capture 09_08_34_pipp_l2_ap5315.jpg (1.51 MiB) Viewed 2743 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Again, I notice the K-Line image first. Yours shows the faculae across the disk very well. Better than many other K-Line images I have seen. They seem hard to pull out of the background. I think your dark coloration may help a bit. Those faculae are of low contrast especially towards the disc center.

This reminds me of a recent post by Christian Viladrich, I think. He mentioned that the " faculae " seen towards the center are not true faculae at all but intragranular lanes. Faculae are generally not visible from straight above. Faculae are the bright walls of the granules seen from the side and being near the limb against the darkening of the limb they are easier to see. Looking from above the walls of the granules cannot be seen and one is looking straight down upon the intragranular lanes. The individual bright points making up the lanes are only visible with great seeing, large aperture and with short wavelength filters but the lanes themselves should be visible with normal-sized equipment and a filter like the Antlia K-Line 3nm filter. I think the channels that form the lanes are associated with both faculae and the intragranular bright points, just viewed from different perspectives.

It's another interesting field of solar study. I am trying to understand it.

Very nice job, Ruslan!

James


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Re: Solar imaging by Star Hunter

Post by Montana »

Some super discs there :bow :hamster:

James, in CaK you see the supergranulation cells (large scale network). You are also seeing residual plage from either former active regions or plage from active regions yet to develop. The plage hangs around from 4-6 weeks pre and post AR development. I hope this helps :)

Alexandra


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Alexandra,
That is true, especially in ultra-narrowband CaK but this is an Antlia CaK 3nm wedge. Much wider bandpass than a Lunt CaK module. Here one is seeing more into the photosphere than in the lower chromosphere. Maybe that 3nm wedge does better on true CaK lower chrom features than many of us think?

I dunno. I don't have either. Soon I hope.

James

Like their plage counterpart, faculae do the same. Show up before a region blows up and persists after it dies. Faculae are hard to study across the disc in white light though because they are only visible near the limb.


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

H-alpha - March 23, 2023, 11:25 (UTC +3)
Equipment:
-Coronado PST H-alpha 40 mm telescope
-Sky-Watcher AZ-GTi mount
-Deepsky IR-cut filter
-QHY5III178m camera.
Stacking of 100 frames.
Attachments
Capture 11_25_57_pipp_l8_ap1080 as8.jpg
Capture 11_25_57_pipp_l8_ap1080 as8.jpg (1.75 MiB) Viewed 2686 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

Nice!! :hamster:


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Re: Solar imaging by Star Hunter

Post by Star Hunter »

Continuum - March 23, 2023, 11:10 (UTC +3)
Equipment:
-Celestron 102 SLT telescope
-Celestron Nexstar SE mount
-Lacerta Herschel prism
-ND3 filter
-Baader Solar Continuum filter
–ZWO ASI 183MC camera
Stacking of 250 frames.
Attachments
Capture 11_10_37_pipp_l2_ap2817.jpg
Capture 11_10_37_pipp_l2_ap2817.jpg (1.95 MiB) Viewed 2683 times


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Re: Solar imaging by Star Hunter

Post by DeepSolar64 »

I love the color you have used here.


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
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Meade Coronado SolarMax II 60 DS
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Losmandy AZ8 Alt/Az Mount
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Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

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