Mint condition cosmetically, optically, and mechanically. Finest components throughout. Optimized for planetary observing and imaging. Conical mirror by the renowned optician Robert Royce with custom cell for very rapid thermal equilibration (comparable to a conventional 6" 1:6 thickness-to-diameter ratio mirror). Follows falling evening temperatures very well. 1.8" minor axis diagonal with Protostar curved diagonal support for freedom from diffraction spikes and refractor-like images. Powder-coated gloss white 12" OD aluminum tube (upper end rolled), dual-speed 2" rotatable Crayford focuser with base radiused to match OD of tube, 8X50mm finder with dovetail mount, Parallax rings, aluminum dust cover, powder-coated 90mm f/11 achromat guide scope with 2" single-speed Crayford focuser and illuminated reticle 27mm eyepiece, sliding tube counterweights.
The massive, rock-steady German equatorial mount with large thrust surfaces was made by the renowned Bill Schaefer. 6" diameter tubular steel pedestal column. Vibration damping is virtually instantaneous. RA worm and wheel drive gear set by Edward Byers, Hurst synchronous motor with drive corrector supported on pedestal shelf. The manual tangent arm in declination is backlash-free and easily motorized if desired. Aluminum setting circles. All knurled knobs are clear anodized aluminum or stainless steel, all fasteners are stainless steel. No corrosion, no plastic! This strikingly handsome "old school" instrument offers stunning performance comparable to a fine refractor of comparable aperture.
New employment circumstances require abandoning my plan for a roll-off roof observatory to house this recently completed labor of love, hence the sale.
Located in Douglas, Georgia about an hour north of the Florida border, about 3.5 hours from Atlanta. Pick-up only unless willing to pay for professional crating.
Filed under: High-End Telescope Auctions (USA)