Hα and CaK animations, 90 mm and 200 mm aperture

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Hα and CaK animations, 90 mm and 200 mm aperture

Post by GreatAttractor »

On Sunday I had probably the last good session this season. Despite the Sun being quite low (25-27°) the seeing was good, and the scattered thin clouds and smeared contrails didn't seem to hurt (beside the slightly varying brightness).

Everything shot with FLIR Blackfly S (IMX273), stacked in AS!3 and processed with ImPPG.

RC8 + Aries ERF + Lunt 50 etalon; AR2891:
sek1_72.jpg
sek1_72.jpg (132.47 KiB) Viewed 450 times
Animation (only some minor activity); even more good frames than before, I especially like the synchronous downward crawl of small features in the lower-mid (20-second intervals, 1:19 h total):

Image

You'll notice the horizontal striping; it's something out of the sensor (in parts of the stack, every second line is darker). They only come out in the RC8 stacks, I suspect AS!3 latches onto them and brings them out due to general fuzziness of the raw frames. (They don't appear in Hα or CaK stacks from 90 mm). Pushing unsharp masking as I did here underlines them even more. The AS!3's function "Row Noise correction (horizontal lines e.g. IMX174 sensors)" didn't help (i.e. it removed them, but introduced another type of horizontal moiré). I'll see if I can do something about it in software (preferentially already in the stacked images).

Levitating prominence:
sek3_14.jpg
sek3_14.jpg (27.15 KiB) Viewed 450 times
Animation (20-second intervals, 0:23 h total):

Image

90 mm refractor, Lunt CaK module, PowerMate 2.5x:
sek5_85.jpg
sek5_85.jpg (80.11 KiB) Viewed 450 times
Thanks to Blackfly's speed I could record a high-cadence animation (10 s videos of 1200 frames each, 5-second breaks); alas, no interesting activity (0:37 h total):

Image


My software:
Stackistry — an open-source cross-platform image stacker
ImPPG — stack post-processing and animation alignment
My images

SW Mak-Cass 127, ATM Hα scopes (90 mm, 200 mm), Lunt LS50THa, ATM SSM, ATM Newt 300/1500 mm, PGR Chameleon 3 mono (ICX445)
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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by Montana »

Wow!! what a lot of work, well done, I thoroughly enjoyed all of these :bow :bow :bow I think the levitating prom is my favourite, how cool is that!!

Alexandra


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by Ivan »

Filip, great work and great result!

Ivan


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by EGRAY_OBSERVATORY »

Excellent captures Filip and thanks vm for sharing

Terry


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by AJamesB »

Wonderful! Love the high res animations, quite a bit of fine detail movement is visible. Thanks for posting!


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by rigel123 »

👍🏻👍🏻


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by arnedanielsen »

Beautiful work!

Best regards,
Arne


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by Carbon60 »

That’s a lot of work, Filip. Very nicely done.

Stu.


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by GreatAttractor »

Thank you, everyone.

Thanks to Blackfly I've almost filled up my hard drive (goodbye Chameleon's 30-45 fps, here it was 90-120 fps), I think it's time to go 2 TB next season!

Another thing - for some reason lady beetles were swarming around my equipment (especially as it got warmer before noon); in the end I had maybe 20 of them at any given time crawling all over the mount and telescope. Including the ERF. For a few minutes I was blowing them off, but then realized it's like having a 7 mm obstruction (or two) on your 200 mm RC - probably doesn't matter much. Two specimens even found their way inside (through the small gaps on the underside of the ERF cell - I taped them shut once I noticed) and were occasionally crawling on the tube baffles or the ERF's underside.


My software:
Stackistry — an open-source cross-platform image stacker
ImPPG — stack post-processing and animation alignment
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SW Mak-Cass 127, ATM Hα scopes (90 mm, 200 mm), Lunt LS50THa, ATM SSM, ATM Newt 300/1500 mm, PGR Chameleon 3 mono (ICX445)
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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by MapleRidge »

A very nice set of images Filip...well done :bow

Are your lady beetles looking for a winter home? Lots of them (and other insects) massing on the exterior walls here looking for an entry points to overwinter.

Brian


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by GreatAttractor »

Right, I've read up on it recently. But this was a field session, lots of grass next to a piece of woodland. Maybe they just liked all the warmed-up metal.


My software:
Stackistry — an open-source cross-platform image stacker
ImPPG — stack post-processing and animation alignment
My images

SW Mak-Cass 127, ATM Hα scopes (90 mm, 200 mm), Lunt LS50THa, ATM SSM, ATM Newt 300/1500 mm, PGR Chameleon 3 mono (ICX445)
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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by DeepSolar64 »

WoW, nice closeups!!


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by MAURITS »

Beautiful results Filip.


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by ffellah »

Excellent set, Filip. I really like the CaK animation, I have not seen one before.

Franco


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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by GreatAttractor »

Thank you. I have one in better seeing:
Image

but haven't caught any significant activity yet.


My software:
Stackistry — an open-source cross-platform image stacker
ImPPG — stack post-processing and animation alignment
My images

SW Mak-Cass 127, ATM Hα scopes (90 mm, 200 mm), Lunt LS50THa, ATM SSM, ATM Newt 300/1500 mm, PGR Chameleon 3 mono (ICX445)
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Re: Hα and CaK animations, 90 mm and 200 mm aperture

Post by eroel »

Filip:
Beautiful images all of them, thanks for sharing.
Best regards.
Eric.


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