Quote:
Originally Posted by Bassnut
I think fancy ultra wide field Is daft too, a close look at the moon beats a bunch of bright high quality dots any day  |
Hi Fred
I know you are an astrophotographer- so you've got an association in your mind with fast f ratio = wide field ? just a reminder that visual magnification on any 'scope is controlled by the eyepiece . The range of eyepeices and amplifiers with long eye relief even in short focal length eyepieces, available now , mean that no configuration of telescope is limited in any way to achieve the full range of exit pupils/magnifications needed. Sky background brightness and observed detail in the image is a function of the magnification, and has nothing to do with the F ratio of the 'scope.