Bode's galaxy with ASI178MM

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NDB
Posts: 123
Joined: Tue Dec 10, 2013 12:17 pm

Bode's galaxy with ASI178MM

Post by NDB » Tue Feb 16, 2016 2:05 pm

2nd deep-sky test with the ASI178MM (still uncooled).
5-s exposures; the galaxy is poorly contrasted.
One dark for all images with SharpCap. No guiding, no bias, no cooling... no stress :)
Sorry for framing.
Suburban sky, just above the chimney (some frames were blurred and enlighted by the reflection of street lamps). Anyway the camera is fantastic, even in this very average conditions!
m81_2016-02-15_newt254_asi178mm_500x5s.jpg

Stepping Beyond
Posts: 44
Joined: Mon Nov 07, 2016 6:14 pm

Re: Bode's galaxy with ASI178MM

Post by Stepping Beyond » Fri Dec 15, 2017 7:41 pm

Pretty darn good for 5s.

poobie
Posts: 21
Joined: Sun Nov 20, 2016 11:05 pm

Re: Bode's galaxy with ASI178MM

Post by poobie » Mon Dec 18, 2017 5:03 am

No kidding. very impressive. I've neglected my 178 recently, need to get it back out.

TomR
Posts: 76
Joined: Mon Oct 17, 2016 7:52 am

Re: Bode's galaxy with ASI178MM

Post by TomR » Fri Mar 16, 2018 1:48 pm

I don't think this is a great camera. It has a horizontal banding problem. Traces of this pattern are visible in your image.

There exists software to to reduce or eliminate this banding problem, but I think this problematic, because it can introduce additional image artefacts, which are difficult to detect. Dark frame subtraction alone will not help much to get good deep sky images with this camera.
Last edited by TomR on Sat Mar 17, 2018 3:46 pm, edited 1 time in total.

Merlin66
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Re: Bode's galaxy with ASI178MM

Post by Merlin66 » Sat Mar 17, 2018 12:25 am

Tom,
Have you experience with the 178MM on solar imaging??
(I currently use the ASI 174 and will add an ASI 183 for shorter focal lengths)
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TomR
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Re: Bode's galaxy with ASI178MM

Post by TomR » Sat Mar 17, 2018 3:45 pm

Merlin66 wrote:Tom,
Have you experience with the 178MM on solar imaging??
(I currently use the ASI 174 and will add an ASI 183 for shorter focal lengths)
I've tried to use a 178MC for deep sky and planetary imaging and documented some of my findings at the "Banding issues with ASI 178MC" thread in the camera section.

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