Atik Cameras Forum
Images => Deep Sky Images => Topic started by: Davide Manca on January 11, 2012, 08:41:08 am
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Hi,
here is an image of NGC2359, aka Thor's helmet. It is a combination of Ha (red), O III (blue) and a syntethic green channel (Ha+OIII). The method I followed is Steve Cannistra's.
http://www.astrobin.com/2668
Integration: Ha 140 min (subs 20min), OIII 140 min (subs 20min).
Newton SPX 12" on G42 Observatory Plus mount.
Atik 383L+ with Astronomik Ha 12nM and OIII filters.
...and... have a great 2012!!!
Clear skies
Davide
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A very nice capture? I do notice a few off center halos around some of the stars on the right; internal reflections somewhere in the light train??
bwa
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Thanks for your comment :)
I believe the halos are generated by the filters, maybe I could try with a different distance filter-sensor?
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I got something very similar when I was imaging the HorseHead nebula. I had a real nasty reflection on Alnitak off an IR/UV filter. I moved the filter farther out from the camera and the reflection disappeared; only obvious on really bright stars...
bwa
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Nice image Davide,
And I see you own a SPX300 F4. Very nice telescope ;)
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Nice image Davide,
And I see you own a SPX300 F4. Very nice telescope ;)
Yes. it has excellent optics, and a poor tube, way too thin to avoid flexure and frequent loss of collimation..