The OA-7.0
This is the scope that some customers all but demanded I offer, and thankfully, I listened.
Saturn`s Cassini division is obvious even under poor seeing conditions with bright globular clusters
split wide open revealing hundreds of stellar pinpoints in the core, due in no small part to the
superb resolution and contrast offered by this and all the OA-Series telescopes
Specifications
Clear Aperture: 178mm +/- 2 mm
Focal Length: 1720mm +/- 2%
Secondary: 1.83 minor axis elliptical flat
Airy Disc size: 12 microns
Spot Size at .25 degrees off-axis: 33 x 30 microns
Limiting Magnitude: 13.2
Theoretical Resolution Limit: .65"
Min./Max. Magnification: 32 / 440
Coatings: 96% reflectance
Focuser: 2" Low Profile Helical (standard)
Tube Length/Diameter: 73 x 10.2 "
Average Eyepiece Height at Zenith: 75"
Tube Weight: Fiberglass 18 lbs
Mount/Yoke Weight: 45 / 6 lbs ( 51 lbs combined )
Prices
Mounted Fiberglass: $2395.00
Fiberglass Tube Assembly: $2145.00
Optics Set: $995.00
S&H: Mounted $100.00 Tube Assy $40.00
Optics Set: $15.00
(Continental U.S. Only)
Current Delivery Time: 18-20 weeks
Prices Do Not Include: Duties, Fees, or Taxes
Tel. 978-874-2985