So I recently bought a Celestron Nexstar 127SLT Mak telescope to do my first steps in astrophotography.
It is a 1500mm f11.8 scope. Unfortunately I rushed with my decision on which camera to buy, and I went with a Svbony sv205 without doing a proper research and math.
The camera has several problems. Besides having a terrible green circle in the middle and purple vignetting (changing hue saturation or white balance doesn't help) it also disconnects randomly.
Now I plan to upgrade to a proper camera and came to these 2 options
ZWO ASI224MC or ZWO ASI462MC
If I am correct generally it is considered that for an average to good seeing you should push focal ratio of 5 times camera’s pixel size.
ZWO ASI224MC has a pixel size of 3.75µm so 5x3.75= f18.75
ZWO ASI462MC has a pixel size of 2.9µm so 5x2.9= f14.5
Using Barlow lenses will give me these results.
1.5x Barlow: 1.5 x 11.8 = F/17.7
2x Barlow: 2 x 11.8 = F/23.6
So which camera would be more suitable for my scope for planetary imaging in terms of details and image clarity?
Also I know that 11.8 is quite slow for DSO, but will using a 0.5 reducer to get f5.9 be enough to get started?
(I will not use the ASI224 or 462 for DSO )
I would really appreciate your advice.
Edited by fender90, 22 October 2021 - 09:04 PM.