Orion XT12i with Swayze-refigured primary & Protostar secondary
Televue NP101 refractor
William Optics Megrez 90 refractor
Universal Astronomics Deluxe Mounts
Quote:I currently use 1.25" plossls in my 8" f/10 LX90. I do have a 2" visual back. Question is, what can I expect if I were to get a 2" - 70 or 80 degree 38mm eyepiece? Would my views be much wider or better than say a 38mm 1.25 @ 52 FOV?
First and foremost observing love: naked eye.
Last but not least, telescopes.
And I sometimes dabble with cameras.
Quote:First of all, it's impossible to make a 38-mm eyepiece with a 52-degree field of view in a 1.25-inch barrel. About the longest eyepiece that can deliver a full 50-degree field of view in that format is 32 mm.Second of all, for f/10 SCTs in particular, because of their long focal ratio, 2-inch eyepieces are especially beneficial. For instance, a relatively inexpensive 40-mm eyepiece with a 70-degree apparent field of view would give you a field of view 75% bigger in diameter and three times bigger in area than anything you can get in the 1.25-inch format.Buying a focal reducer is another means to the same end.