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Home > Classifieds > Astromart Classifieds > Telescope - Reflectors > Classified #105250

For Sale: 16" OGS RC - save $12,000+ over buying a new one #SOLD#

Ad No.: 105250
Seller: Anacortes Telescope
Posted: 1/21/2002 6:24 PM
Location: 9973 Padilla Heights Road
Anacortes, WA - United States
Phone: 800-850-2001
Email: herbyork@icloud.com
Ad Hits: 1037
16” Ritchey-Chretien, 3410 mm focal length, f8.4 focal ratio, four years old, very good condition

Optics:

• Manufacturer: Star Instruments (Paul Jones)
• Type: Ricthey-Chretien,
• Hyperbolic Mirrors avoids coma problems
• Less light loss (only two mirrors, no refractive elements)
• Flatter Fields
• Because of the quality of the design, used in most professional observatories (for example, Keck, Hubble, Kitt Peak [WIYN], Cerro Tololo Inter-American Observatory)
• 16” primary
• Material: Zerodur – A glass ceramic
• Primary mirror specifications
• Focal lenth – 49.625
• Focal ratio – 3.1
• P-V - 0.252ë wavefront
• RMS - 0.0328ë
• Strehl ratio – 0.958
• Secondary
• Material: Zerodur
• 6” outside diameter
• 2.72x amplification
• Spacing between mirrors – 32.5” on center
• Backfocus
• 14.0 inches from front of primary mirror
• 11.0 inches from back of telescope Backplate

Tube Assembly
• Manufacturer: Optical Guidance Systems
• Tube - Painted Aluminum
• Backplate – Anodized Aluminum
• 2.7 inch Astrophysics focuser
• Extra Heavy Duty Mounting Rings and Mounting Plate
• Internal Invar 36 assembly to maintain constant spacing between mirrors as temperature changes

• Secondary Focuser – Electrically driven in 0.0007 inch increments by use of remote hand controller (has a digital readout, can move in single or multiple increments).
• Four 4 inch balanced fans on telescope backplate for control of air currents in tube
• Secondary heater to prevent dewing
• Weight slide rods on outside of tube for very accurate lateral weight balancing
• Fitted Aluminum cover with 5” window for solar observing


ATWB is selling this for one of our clients - $17000 CONTACT HERB YORK ONLY please
 

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