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HI David ,
I am responding to your PM on the forum , as other members may have a similar question.
How effective is this mask for fast minor , grab and go scopes ?
Are the effects similar for visual observations or is this predominately an exercise for astrophotogphy?
My newton specs are
130mm aperture
f/5
focal length 650mm
45mm or 35% central obstruction by secondary mirror
I tried doing the the calculations but there was a term or two which threw me so I just guessed the data.
Can you help with the claculation.
given the limitation of this scope is there going to be a noticeable difference
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