Quote:
Originally Posted by Joshua Bunn
Im not sure if the 10" can have the rear thread unscrewed to open it up,
|
Yes, the 10" ACF has a 3 1/4" to SCT thread adapter that unscrews. You can fit any external focuser with a 3 1/4" Meade thread (which I think is 3.27" 16tpi, but I might have to check that).
Whether that influences AP vignetting, I don't know, but it was a large determinant in my fitting a MoonLite with 3 1/4" flange to reduce 2" widefield eyepiece vignetting.