Harga Celestron 80 mm Guidescope Package

OVERVIEW Complete package includes 125 mm rings and 80 mm Guidescope Compatible with Celestron NexGuide Autoguider Includes Extension Tube to help reach focus without having to use a diagonal M42 thread on extension tube allows you to slide NexGuide autoguider barrel into extension tube or thread guider directly onto extension tube Metal focuser with tension screw minimizes mechanical " play" when focusing making it easier to keep guide star on chip. ITEM # 52309 IN STOCK Description General Features Complete package includes 125 mm rings and 80 mm Guidescope Compatible with Celestron NexGuide Autoguider Includes Extension Tube to help reach focus without having to use a diagonal M42 thread on extension tube allows you to slide NexGuide autoguider barrel into extension tube or thread guider directly onto extension tube Metal focuser with tension screw minimizes mechanical " play" when focusing making it easier to keep guide star on chip. Specifications Aperture ( mm) 80 mm ( 3.15 in) Focal Length 600 mm ( 24 in) Focal Ratio 7.5 Highest Useful Magnification 189 x Lowest Useful Magnification 11 x Limiting Stellar Magnitude 12 Resolution ( Rayleigh) 1.74 arc seconds Resolution ( Dawes) 1.45 arc seconds Light Gathering Power ( Compared to human eye) 131 x Optical Tube Weight 3.94 lbs ( 1.79 kg) Weight of Tube Rings 2.69 lbs ( 1.22 kg) Weight ( lbs) 6.69 lbs ( 3.03 kg) Warranty 2 Years