I am starting to gather equipment to try EAA. Presently my setup is 1.25" but I have a 6" f/4.8 mak newt on Equitorial mount that can handle 1.25" or 2" viewing. I did purchase a ZWO camera. My question is do I just continue with my 1.25" setup for EAA or is there a big advantage to switching to 2" for EAA and would I see an appreciable difference in viewing?
1.25" or 2" for EAA
Posted 10 August 2018 - 11:09 AM
I'm thinking the CMOS sensors are pretty small. Unless you have a 4/3rds or larger sensor, 2" probably won't buy you anything.
I could be wrong. It's been known to happen
- GoldSpider likes this
Posted 10 August 2018 - 11:26 AM
If you look at the 294 Pro page on the ZWO site toward the bottom there is a diagram of various ways to connect the camera. One of them shows it with 1.25"/M42 adapter and a 1.25" filter. I connect my 294 (4/3 sensor) and 224 (1/3 sensor) using T extensions and the 1.25" adapter without any issues that I can see. ZWO recommends using this set up with the 1600.
The site does not show the use of a 1.25" filter with the larger 23.6mm aps-c camera such as the ASI071 Pro.
Posted 10 August 2018 - 03:59 PM
I have a zwo 290mc with the smaller sensor so if I understand you correctly, you don't see much of a difference until you get to bigger sensors?
Posted 10 August 2018 - 10:56 PM
You will not see any difference, with that sensor size, don't worry!
Posted 11 August 2018 - 10:21 AM
The smaller sensors work fine with 1.25" hardware. Even my ASI294MC Pro with its type 4/3 chip only shows a little bit of vignetting in the corners at f/3.6 using a 1.25" nosepiece and focuser. When using an APS-c chip I switch to 2" hardware.