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Posted by L Madia on March 11, 2002 16:54:05 UTC

I am unsure of purchasing a 40mm or a 30mm for DSO's. I am leaning on the 4mm because if I get a 15mm than the 2X barlow will produce a 6.5mm. I am aware that it will be hard to get an image with 3mm, but I consistantly get a decent image with the sr4mm provided with the scope.

Do you think I should go with the 40 or the 30mm considering my focal lenth is 900mm Do you still think I should go with a 6.5mm even though I will have a 15mm that I can use w/the barlow to produce the 6.5mm?

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