Sharpstar 13028HNT 130mm f/2.8 HNT Hyperbolic Newtonian Astrograph Instruction Manual
Sharpstar 13028HNT 130mm f/2.8 HNT Hyperbolic Newtonian Astrograph COLLIMATION INSTRUCTION Part One Equipment and Tools Required Equipment and tools: 13028HNT Newtonian Astrograph, collimating eyepiece or laser collimator Part Two Basic Connection Part Three Mirror Position Adjustment Secondary mirror Step 1: Securely hold the secondary mirror … Read more