[The_bluester (Paul)]

I am in the middle of deciding on a direction to go in for an imaging OTA. The non edge HD C925 has it's limitations as I expected.



Without heading down the road of the standard 80mm frac as a starting point, I am looking to gain a wider FOV. Currently and budget wise well into the future I am using an ASI294 Pro cooled OSC and I am happy with that.


Does anyone have any figures on what the well corrected image circle is for something like the Bintel branded F4 8"? If I can cover a 24mm circle without appreciable coma or other aberrations it would make a good starting point, otherwise a coma correctior needs to be added to the price of admission.