Final Decision: ASI1600mm-Cool vs ASI183MM Pro
Posted 05 August 2021 - 12:53 PM
I understand that the pixel scale and detail will be better on the 183 MM (2.75”/pix) but I like the wider FOV of the 1600 MM (4.35”/pix) I have seen some really nice wide field images at ~4”/pix and higher...practically is this a huge difference? Also in terms of S/N ratio the 1600MM would seem to to have an advantage with its larger pixels, allowing for shorter subs. I’m shooting in Bortle 7/8 skies so ideal subs for both to swamp read noise would be less than 3 minutes...so really not a huge issue?
I’m also not perturbed by the lack of RAM buffer in the 1600MM-cool as I will be running all USB 3.0 connections.
What would you do?
Thanks in advance!
Posted 05 August 2021 - 01:31 PM
I'd get the 183MM (and I did <smile> ). Much more modern camera, no microlensing artifacts, as on the 1600.
In Bortle 7-8, 180mm, F4.5, broadband, I'd expect 30 - 45 second subs would be fine, even with the tiny pixels. Narrowband could be done with those 3 minute subs.
The 183 is a niche camera, it's niche is short fast optics. The 180mm (even the 300mm) qualifies. I got mine for my 400mm F2 C8 RASA.
All that said, if the wider field is a main consideration, the 1600 is a reasonable choice.
Edited by bobzeq25, 05 August 2021 - 01:36 PM.
- dswtan and OldManSky like this
Posted 05 August 2021 - 01:36 PM
I got the 183mm as well. Microlensing artifacts was an issue. 4"/pixel scale was too rough for me.
It's been a great camera on my short refractors.
I just recently added an ASI2600MC-Pro (APS-C sized, bigger 3.76 micron pixels). Planning to keep both cameras, one for mono, one for OSC.
Posted 05 August 2021 - 01:44 PM
Posted 05 August 2021 - 10:07 PM