The OA-9.0
A few of you have asked if I could produce an OA-Series scope this big, so here it is! The
OA-9.0 will utilize an 'across the tube secondary' optical configuration, so the tube will be only
slightly longer than the OA-7.0 with a 2" Crayford focuser as standard equipment. As with all the
OA-Series scopes, the OA-9.0 will be available as a Dob-mounted, OTA, or optics set.
Specifications
Clear Aperture: 228 mm +/- 2 mm
Focal Length: 2185 mm +/- 2%
Secondary: 3.1" minor axis elliptical flat
Airy Disc size: 12 microns
Spot Size at .25 degrees off-axis: 48 x 45 microns
Limiting Magnitude: 13.9
Theoretical Resolution Limit: .51"
Min./Max. Magnification: 39 / 545
Coatings: 96% reflectance
Focuser: 2" Crayford Focuser
Tube Length/Diameter: 82 x 14.2 "
Average Eyepiece Height at Zenith: 85"
Tube Weight: Fiberglass 28 lbs.
Mount/Yoke Weight: 60/ 8 lbs. ( 68 lbs. combined )
Prices
Mounted Fiberglass: $3945.00
Fiberglass Tube Assembly: $3645.00
Optics Set: $1795.00
S&H: (Quotes for continental U.S.) Mounted ** Tube Assy $60.00
Optics Set: $15.00
Current Delivery Time: 18-20 weeks
Prices Do Not Include: Duties, Fees, or Taxes
** Inquire when ordering
Tel. 978-874-2985