Quote:
Originally Posted by AlexN
How do you think it would go for planetary imaging, with say, a 2800mm focal lenght + 5x powermate (lets just assume that we ever get seeing nice enough for that... thats an increase of 12,000mm in focal length or there abouts... Do you think it would still be effective then?
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I suspect that the mask 'spacings/gaps' is more a function of the scopes aperture (diameter) and native F.L.
If you design it for a specific aperture it should work within the limits of adding a reasonable 'barlow' to that scope.
What you will notice IMO is different size spikes but using a barlow within reason on the same scope should still yield a usable 'focusing image'.
What I meant when I said multiple masks for multiple F.L's was having to make individual masks for individual scopes with v.different apertures/native FL.
So I believe I'll only need one mask for my 5" and 6" APO and one for my 12" SCT.