JoeBlow
02-01-2016, 04:20 PM
Happy new year!
I was wondering if anyone could talk me into or out of this...
I have a Skywatcher 150x750 reflector on an eq3 mount that I use as my grab and go scope. I chose this size for its portability and wide views. Though I love this scope, the coma and other edge imperfections are starting to bug me. Also I've been finding myself using high power much more often with this scope.
This got me thinking about swapping it for the 750x1000 version. I figured with a 40mm 68 degree eyepiece I can still get pretty wide fields and it would still be grab n' go size. It has been a very long time since I've used anything slower than F5, so the question is will going from F5 to F6.7 show considerably less coma and better edge correction?
The thought of better collimation tolerance and greater depth of field also sound very attractive.
Is my reasoning sound or am I missing something and I should just stick with what I have?
Thanks,
Joe
I was wondering if anyone could talk me into or out of this...
I have a Skywatcher 150x750 reflector on an eq3 mount that I use as my grab and go scope. I chose this size for its portability and wide views. Though I love this scope, the coma and other edge imperfections are starting to bug me. Also I've been finding myself using high power much more often with this scope.
This got me thinking about swapping it for the 750x1000 version. I figured with a 40mm 68 degree eyepiece I can still get pretty wide fields and it would still be grab n' go size. It has been a very long time since I've used anything slower than F5, so the question is will going from F5 to F6.7 show considerably less coma and better edge correction?
The thought of better collimation tolerance and greater depth of field also sound very attractive.
Is my reasoning sound or am I missing something and I should just stick with what I have?
Thanks,
Joe