I'd like to increase the resolution I can get for planetary photography. At the moment, I'm limited to 2500mm and f/10 with my Meade LX200-ACF 10". I use a Canon 600d for imaging.
According to what I've read (
here and some other advice), my 'scope and camera ought to be able to support an f-number of 21.5 or thereabouts, though some seem to be able to push that on major planets so I figure about f/25 would be a good target (and the 2.5x Powermate is cheaper than the 2x).
Q1. Has anyone had problems with the TeleVue 2.5x Powermate (1.25") (including T-ring adapter) for imaging?
Q2. If I later upgrade the camera to a QHY5II-L or ASI120MM, will the higher pixel density be too much of a stretch with the 2.5x Powermate (since f/19 will then be the "ideal" f-number according to the formula) or is there enough latitude that it'll work OK?
Any other relevant advice will be warmly appreciated.
