I am not sure if this makes any sense whatsoever. I wanted to ask more experienced members here for their thoughts.
Cooled astrophotography cameras cannot be worked into my budget unfortunately so the only option is DSLR or uncooled planetary camera.
Please forgive this newcomer for any mistakes below.
The ZWO ASI120MM has:
1. Pixel size of 3.75um -- not much smaller than a Sony a6000, Nikon d7200, or Canon 80D that other members use.
2. Q.E. of 80% -- far higher than my present cameras (Canon 40D and Nikon J1). This would help make the best use of the light gathered.
3. Read noise that is higher than other ZWO cameras. Could lights+darks+flats+bias frames allow cost savings here?
4. Monochrome sensor - useful with certain filters. May also help image quality if LRGB imaging.
5. The potential to be a good camera for guided subs when I progress to that point
Because of the small camera lenses it would be used with, there would be a lot of wasted light and resolution with a larger sensor (such as my Canon 40D) that would not contribute to image quality on many DSO targets. The 1.2 megapixels of the ASI120MM are spread out over an area that is 4.8mm x 3.6mm in size compared to 22.2 x 14.8mm in a Canon APS-C camera such as the Canon 40D. This is a 19x smaller area so the ASI120MM would put a comparable amount of pixels on target as the 24MP Canon 80D assuming the target fits entirely on the ASI120MM sensor.
Given sufficiently long exposure time to compensate for the small noisy sensor, could this actually work?
Thank you so much for your help!
Edited by Reece, 20 January 2021 - 04:12 PM.