Obsession Classic 18/F4.5 secondary configuration request help
Hello, I want to upgrade my Obsession Classic 18" F4.5 for imaging with equatorial platform and Full Frame sensor (24x36)
My questions :
Use of a big Paracorr 3" from Televue
Focus starlight instruments FTF3215B-A
Starlight instrument adapter A32-3203-1
Adapter 3" Starlight instruments for the big Paracorr EC32-3205-3CR
I change the secondary mirror for a 4"
To adapt all this, I do not touch my current secondary cage, a new one will be manufactured, it will certainly be necessary to modify the length of the tubes to reach the focal point, the draw being different (currently I have the FTF2015BCR used with Paracorr 2, but I have this unpleasant vignetting with the 24x36)
My questions are simple, would this configuration be the right one, do we agree, the only focuser at Starlight instruments capable of accepting the big Paracorr 3" from Televue is the FTF3215B-A model? (I have looked at the 3015 but the clear aperture is not big enough for big Paracorr from what I have read¡)
Thank you for your advice and comments.
Sincerely, Guillaume.
