Gocats

Thanks everyone for all of the input. I'm convinced it it "user error". I need to be sitting not standing. Hope to get out tonight and confirm.

2 hours ago, Louis D said:

Are you observing sitting down?  I can't observe standing up at all.  I weave and bob about too much.

Great suggestion! Never considered sitting. I will try next time I'm out.

Thanks vlaiv, this is something I have wondered about. I'm still learning to be more stable when looking through the eyepiece.  More difficult than it would appear. I'll focus on this issue next time I'm out.

Yes Alan I am using a TeleVue Everbrite diagonal. I get the same result with the Celestron diagonal that came with the scope. 

Thanks but no. The difference isn't quite that dramatic.

Newby here, looking for some help.

The FOV I am seeing through the eyepiece is not what FOV calculators (Stellarium, 12dstring.me.uk) indicate I should be seeing.

As an example, using a NexStar 8SE, with a Celestron X-Cell 25mm eyepiece I should easily be able to see the entire moon. I'm seeing maybe 2/3 of the moon. Even with my Luminos 15mm I should get the entire moon in the eyepiece but I'm not. I'm sure there is something I'm missing but I can't figure it out.

Any thoughts or help will be appreciated.