Astro-Tech AT6RC Ritchey-Chrétien astrograph includes 1 inch and 2 inch spacers and Crayford dual speed focuser. Condition is excellent comes with original packing.
FEATURES:
• 6" f/9 true Ritchey-Chrétien hyperbolic mirror optical design • diffraction-limited or better BK-7 mirrors• enhanced aluminium optical coatings, overcoated with quartz • dual-speed 2" Crayford focuser • 1" and 2" extension rings for fine-tuning the back focus • Vixen-style dovetail rail
Price reduced from $400 to $350 $350 plus postage
PM me if you are interested
Last edited by ubique; 19-09-2020 at 05:36 PM.
Reason: Price reduction
Astro-Tech AT6RC Ritchey-Chrétien astrograph includes 1 inch and 2 inch spacers and Crayford dual speed focuser. Condition is excellent comes with original packing.
FEATURES:
• 6" f/9 true Ritchey-Chrétien hyperbolic mirror optical design • diffraction-limited or better BK-7 mirrors• enhanced aluminium optical coatings, overcoated with quartz • dual-speed 2" Crayford focuser • 1" and 2" extension rings for fine-tuning the back focus • Vixen-style dovetail rail
