Willliam Optics - ZenithStar 66mm Doublet SD APO Optical Tube with 2 Speed Focuser OTA Package Only WHITE

ZenithStar SD Doublet APO OTA, 66mm, f. 5/9, ideal to piggyback on your Celestron SCT!

A small-aperture, extremely-portable APO scope at a great price” ZSSD Doublet APO is here!
Sharp to the edge and color free, no other scope will beat it’s price/quality ratio! Excellent
mechanics and fit and finish, Crayford 2-speed fine focuser, super-high transmission
multi-coating, aluminum case. Fast focal ratio makes it your ideal fast set-up for travel
astrophotography or piggybacking. 

Each Includes:

    * f/5.9. 388mm
    * L-Based Bracket
    * Custom Aluminum Case

Aperture  66mm (2.6”)
Focal Ratio F/5.9
Focal Length 488mm
Objective Type SD Doublet, Air Spaced, Fully Multi-Coated, STM coating
Resolving Power 1.78”
Limiting Magnitude 10.8
Lens Shade Retractable
Focuser 1.6\” (40.6 mm) Crayford FocuserAdjuster, 1:10 fine focus 60mm (2.4”) Focuser
Travel Length Rotatable Design
1.25” Adapter Brass Compression Rings
L- type Mount L Bracket Based
Field Stops 10 Baffles
Tube Diameter 2.95” (75 mm)
Tube Length 11.8” (300 mm) Fully Retracted, 14.2” (360 mm) Fully Extended
Tube Weight 3.5 lbs. ( 1.7 kg)
Case Aluminium Case (Standard)
Case Dimensions (WxHxD) 15” x 9.6” x 6.5”