1.7 Specifications
Type 2-element APO refractor, Fully Multi-Coated
Clear Aperture 3.35 inches (85mm)
Aperture Gain 147, compared to a 7mm exit pupil
Focal Length 600mm
Focal Ratio f/7
Resolution (visual) 1.4 arc-sec. (Dawes Limit for a 3.35-inch aperture)
Resolution (photographic) 200 line pairs per mm
Magnification 11x to 200x using Tele Vue eyepieces
Field, Visual 4.4° at 11x
Focuser 2-inch, rack and pinion type with 10:1 reduction
Tube Powder-coated aluminum
Length 19.0-inches (O.T.A. only)
21.9-inches with 2” star diagonal
Weight 5.95 lbs. (tube assembly with no caps)
8.20 lbs. (tube assembly in case with caps)
Accessories custom fitted soft case, screw-on lens cover, sliding dew (glare) shield
Specifications subject to change without notice.
1.8 Recommended Accessories
Finder Starbeam or 55mm Plössl for 11x, 4.4° field
Recommended TV-
85
Accessory Package includes:
Eyepiece 18.2mm DeLite for 33x, 1.8° field
Diagonal 2-inch Everbite 99% broadband mirror type, with 1¼” adapter
Mounting Adjustable 3” Ring Mount with ¼-20 tapped holes for
standard photographic tripods or optional Tele Vue mountings
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