There has been some discussion about issues with my C14 Edge.? Namely, inside/outside of focus defocused showed significant displacement of secondary shadow.? Also, scope showed a fair amount of an axis astigmatism and was basically an optical dog.? I did two things: center dotted the secondary and laser aligned and made sure that the rotational alignment of primary/corrector was correct.
Last night was the test.? After collimating-it was waaaaaay off-and after OTA cooled down, inside/outside of focus showed little displacement of the secondary shadow.? There was minimal on axis astigmatism.? Stars seemed a little tighter and there was a sense of being able to find focus easily.? There is a Feather Touch focuser on the back end, the primary is locked down.? I use a star at about 50 degree elevation (much higher and I can't reach the eyepiece), no diagonal, and a 10.5mm old Tele Vue Plossl.? Seeing last night as measured by the Santa Barbara Scientific SB2 seeing monitor was running between .8" and 1.2".?
I don't know if this OTA is going to be a planet killer, but there does seem to be some improvement.
Mike?
