I would go with near middle of travel. This would seem to make it more likely that any eyepiece you get in the future will work. My focus travel is 4 inches and I have eyepieces that require it be racked all the way in and all the way out. Extension tubes can be used if you need more out travel.
Hello all,
I am just getting ready to cut my trusses for the dob I am making. The question I have is where to make the eyepieces I have come into focus. I have read that you use a 2" eyepiece racked all the way in and cut your trusses when it just reaches focus. Then I ready just the opposite. You should cut your trusses so everything is in focus with your eyepiece racked all the way out.
What are your feelings on the matter. I feel I should make eyepieces come into focus in the middle of the travel of the focus-er. ??????
Thanks for your help in this matter.
Mark Shelton _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy@mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php