In the future I plan to add a bigger flattener to my TS 130mm (5.2") APO refractor.
This Riccardo 2.5" flattener is what I have today:
Very good quality but it can't handle a fullframe sensor, only up to about APS-H format sensors.
Now I'm thinking of this 3" flattener:
Does anyone know who is the manufacturer of this flattener where I can get more detailed data of it? This was the most important part of my question.
I have seen it under many different names, Altair, TS, Orion and maybe more.
I guess they are all of the same optical design but with difference in the camera adapter. Camera adapters can have variations in length (depending of what telescope they are adapted to) and have connection to M42 or M48. But I have also seen adaptors to the old medium format Pentax 67. There is also one derivate to RC telescopes, but maybe only the camera adapter that has a different length?
And is there anyone that use this flattener and can tell if the optical quality is good enough for todays high resolution sensors, fullframe or bigger format?