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Originally Posted by Chrissyo
I used a 2X Barlow with my 32mm eyepiece. My video camera was used with 8X Optical zoom.
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so i assume a fl of 1200 odd for the dob?
1200 / 30 = 40 x 8 x 2 = 600X odd
how long is mars in the field of view without tracking with the 2x barlow?
have you thought of buying asimov heavy duty mount?
It handles his 12.5" newt?