View Single Post
Old 08-12-2005, 06:37 PM
davidpretorius's Avatar
lots of eyes on you!

davidpretorius is offline
Join Date: Jun 2005
Location: Launceston Tasmania
Posts: 7,381
my take on this is that you can try and take a picture of what you see through your eyepiece. this is called afocal. a nice steady hand is required.

prime focus with a toucam (webcam) is equivalent to a 6mm ep and prime focus is roughly 30x.

so for a canon, go afocal thru an eyepiece to get a decent size for planets and for beautiful wide views of clusters and nebula, go prime focus (tracking a must).

hows bubs?
Originally Posted by captain3081
Thanks Paul. I don't even know what FOV is all about (I think it means field of view).
I am less than an amateur. I just want to be able to take a photo of what I see through the lens, to keep a history of my viewing.

I know how much detail I can see of Jupiter with my 9mm EP, so I would like to compare this the canon at prime focus. (ie will it be more than a tiny blob.)

Not sure what you mean about the increase of 1.6 to 50x mag. Are you talking about DSLRs being smaller sensor compared to 35mm?
Reply With Quote