Bill, for solar viewing or night time imaging? Hydrogen alpha solar filters require a narrow light cone of f/10 or slower. You couldn't use the Dob at full aperture. On Apr 20, 2016 12:28 PM, "william baker via Utah-Astronomy" < utah-astronomy@mailman.xmission.com> wrote:
A quick question to two to the open group. What type of H Alpha filer would be best for a 10 Dob? If you have a suggestion, why would you suggest that make or model? Thanks Bill _______________________________________________ Utah-Astronomy mailing list http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy
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