Quote:
Originally Posted by gregbradley
Those are way cool shots Marc. Wow, you got the Nth America neb and the Veil. The Orion shot turned out great too.
I am not so sure about a faster aperture 50mm frmo Pentax. I have a 55mm 6x7 lens and it needs to be stopped down so any gain from faster F ratio you probably can't use anyway.
A Nikon or Canon 50mm F1.8 may be the go though. I have used a Nikon 50mm F1.8 and it seemed sharp wide open. I had the Canon equivalent and I tested both against each other and they seem identical in terrestial shots.
Greg.
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The problem for imagers going with a QHY9 image train is the focal length of canon lens versus Pentax though Greg. Those extra few mm of backfocus make sorting adaptors easier. I suspect your 6x7 has even more backfocus to play with. You pretty well have to take the outer window off a QHY9 to fit a canon on, which is doable of course, just not ideal.
Mark, those are inspiring shots for sure. I just love how you make this look so easy. Hoping weather allows me some Barnard's loop fun this year, but the Cygnus area shot is one I wouldn't have though of. Qld Astrofest one of the best Northern horizons I see up here, but always seems a shame to shoot Ha at a dark sky site
