Meade LX200GPS 8" (Laser Alignment & Measurement)
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The use of a Laser curtain to draw a line over a 3D surface.
Projecting a 1mm dia. Laser Beam over 15 Meters onto a Laser Target (accuracy 0.5mm over 15 Meter)
Can produce an alignment accuracy to 7 Arc Seconds.
Reference surfaces on the OTA are the Secondary Mirror Housing & the Read Cell STC Mount.
All photographs a copyright of Conrad Maloney (CRCM Networks, United Kingdom)