Affiliation
American Association of Variable Star Observers (AAVSO)
Thu, 08/06/2020 - 13:04
I currently have an SBIG ST-7E NAGB. Should I use that over my ASI183MM-Pro and if I have a chance to upgrade to an ST-8XM, should I take it even if I have to either user a Barlow lens or buy a scope with a longer focal length for the 9-µm pixels in the ST-7 and ST-8 or should I just stick with the ASI183 with its 2.4-µm pixels with my current scope which has a focal length of 731mm even if the 183 only has a 12-bit A/D conversion. Also, would it matter since the ST-7 and ST-8 has a 15 electron read noise as opposed to the 3 electron read noise of the 183?