Celestron OMNI XLT 102 Instruction Manual

43, 43 Before you begin the collimation process, be sure that your telescope is in thermal equilibrium with the surroundings. Allow 45 minutes for the telescope to reach equilibrium if you move between large temperature extremes. To verify collim…

45, 45 Newtonian collimation views as seen through the focuser using the collimation cap Secondary mirror needs adjustment Primary mirror needs adjustment Secondary Mirror Primary Mirror Mirror Clip Both mirrors aligned with the collimating cap in the …

50, 50 Reducer/Corrector (# 94175) - This lens reduces the focal length of the SCT telescope by 37%, making your Omni XLT127 a 788mm f/6.3 instrument. In addition, this unique lens also corrects inherent aberrations to produce crisp images all the way across the field when used visual…

11, - 11 - Since the fully assembled telescope can be quite heavy, position the mount so that the polar axis is pointing towards north before the tube assembly and counterweights are attached. This will make the polar alignment procedure much easier. I I n n s s t t a a l l l l i…

19, - 19 - Figure 3-3 A A c c u u t t a a w w a a y y v v i i e e w w o o f f t t h h e e l l i i g g h h t t p p a a t t h h o o f f t t h h e e S S c c h h m m i i d d t t - - C C a a s s s s e e g g r r a a i i n n o o p p t t i i c c a a l l d d e e s s…