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Moon mosaic
"First light" of my self-built 300/1500 mm Newtonian telescope. Camera: PGR Chameleon 3 mono (ICX445) with Baader 610 nm long-pass red filter. Imaged at 3000 mm focal length.
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Activity in AR 2529
30-second intervals, around 3 h total.

90 mm refractor + Lunt LS50 etalon. Camera: PGR Chameleon 3 mono (ICX445).
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Large sunspot in H-alpha
Active Region 2529. Image presented as a negative.


90 mm refractor + Lunt LS50 etalon. Camera: PGR Chameleon 3 mono (ICX445)
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Dripping plasma (solar prominence time-lapse)
30-second intervals, 2:23 h total.

90 mm refractor + Lunt LS50 etalon. Camera: PGR Chameleon 3 mono (ICX445).
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Solar prominence animation
30-second intervals, 70 minutes total.

90 mm refractor + Lunt LS50 etalon. Camera: PGR Chameleon 3 mono (ICX445).
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After the last conversion I intended to follow-up with a mirrorless camera, so that I could get better post-processing results using RAWs. I remembered however about CHDK (open firmware with additional functionality for Canon compacts, including RAW shooting) and for now settled with a cheaper option – I bought and converted a used IXUS. This time I mount my IR-pass filters in a way which does not vignette at short focal lengths (just the unmounted filter glass, ca. 27 mm in diameter,  placed on top of the lens – their size is just right). The RAWs come out fine, sensor noise at ISO 50-100 is quite bearable (and I can easily restrict Auto ISO to this range via CHDK). However I get an impression that IR pictures are a bit fuzzier (probably spherical aberration) than in DSC-H10.

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GreatAttractor
Poland
After a somewhat long (15 year) break, in summer 2011 I returned to amateur astronomy. I take special interest in solar and planetary imaging and hope to become better at it.

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:iconcrimson-investigator:
Crimson-Investigator Featured By Owner Oct 23, 2016  Student Artist
I saw you check out my group TheValueOfArt and I think your photography is amazing! ^^ If you'd like to join I'm currently looking for members! ^^
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:icongreatattractor:
GreatAttractor Featured By Owner Nov 2, 2016
Thanks! I'm not currently interested, but good luck with expanding the group.
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:iconreclusivechicken:
ReclusiveChicken Featured By Owner Nov 22, 2015  Hobbyist General Artist
As an insane robotic chicken, I say:

this kind of photography is awesome and unique.
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:icongreatattractor:
GreatAttractor Featured By Owner Nov 22, 2015
It is absolutely awesome! (Maybe even a bit insane). But not that unique actually: quite a number of amateurs dabble in H-alpha imaging.
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:iconreclusivechicken:
ReclusiveChicken Featured By Owner Nov 22, 2015  Hobbyist General Artist
Well, I don't know of many on this website.

I once delved into astrophysics (and quantum physics); I loved those two!
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:iconantoinerozel:
AntoineRozel Featured By Owner Jun 10, 2015  Hobbyist Traditional Artist
Hey there,
Just to say hello and congrats for this great gallery!
Do you mind if I use some of your photos when I give seminars? I am a geophysicist and talk about the solar system quite often. Of course you would be cited explicitly on each slide.
Are you a scientist yourself?
Cheers,
A.
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:icongreatattractor:
GreatAttractor Featured By Owner Jun 11, 2015
Glad you like, Antoine. I'm actually a programmer, but also an avid science enthusiast. Feel free to use my images, you can find some more at www.astrobin.com/users/GreatAt… (and generally on Astrobin, including some with much better resolution and quality than mine).

You might be interested in reading the solarchat.natca.net forum, lots of info on solar imaging, equipment and processing. Some of the members are based in Switzerland.
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:iconantoinerozel:
AntoineRozel Featured By Owner Jun 28, 2015  Hobbyist Traditional Artist
thanks for the comment, I will take a look!
Cheers,
A.
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:iconcosmic-cherry-tree:
Cosmic-Cherry-Tree Featured By Owner Oct 7, 2013  Hobbyist General Artist
Welcome to Beautiful-Cosmos :iconbeautiful-cosmos:

We're very happy to have you with us! :floating:
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:icongreatattractor:
GreatAttractor Featured By Owner Oct 7, 2013
Thank you!
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