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Hi Sean,
What focal length is your Eyepiece? most standard eyepieces have a "sweet spot" within with you have to keep your eyes, else you get the windowed sort of view that's in your pic.
this gets worse with shorter focal length eyepeieces. as long as its above 20mm, it should be ok.
centering the camera lens in the sweet spot is essential and the afocal adaptor like the one in bintel will help with that as you can adjust the cameras position in x and y.
I'd suggest starting with imaging the moon first to make sure the field of view is clear before trying nebulae as its hard to identify the issue with dso's.
also, have a look at sites like astrobin.com and photobucket to host images. they have some nice feaures
keep at it.
Cheers.
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