Orion xx14g Dob CPC 1100 w/Skywatcher 80ED piggybacked Coronado PST TMB 92L refractor AT Voyager mount Nexstar 6/8 mount Denk Big Easy binoviewers Oodles of eyepieces and other optical gadgets Past scopes Meade 8" reflector and 8" SCT
Quote:Those two are usually listed along with the Denks as the cream of the binoviewer crop. Hard to go wrong with either.
Quote:I don't know how much backfocus distance Meade 127 f/7.5 has but I certainly look for the information if you are planning to use with binoviewer. It is very good idea to know upfront to avoid headachesI've learned hard way.
Quote: Also - I have ordered Binoviewer Baader Planetarium Mark V. It should arrive in few weeks. Now I am curious if I will need that 1.25x barlow in this OTA or not. So - to measuring lightpath.So here I need your help.Is that a correct way to measure lightpath: I point OTA at some lightsource and without any eyepieces find where the light focuses then I measure the distance from this focus point to where the extender ends?And then according to previous calculations (two posts above) - if it is longer than 125mm, then I don't need 1.25x barlow?