14.5" f5 Newtonian Astrograph optimized for CCD imaging by Mike Palermiti from Internet Telescope Exchange. This is a very special tube assembly optimized for high quality CCD imaging with 4" of available back focus to handle SBIG camera, filter wheel and AO7. Custom coma 3" corrector by Coastal Optical (see Brian Lula's website: heavensgloryobservatory for details). This Newtonian offers many advantages over other systems for imaging: Fully corrected 25mm+ field, fast optical system for shorter exposures, larger image scale, light weight tube for use with AP900, MI250, or NJP160 sized mounts.
Tube assembly features:
*14.5" f4 primary: 1/9 wave PV, 1/35 wave RMS 2" thick, 96% enhanced coating
*Massive 3" focuser (5"OD), motorized in both focus and rotation
*Custom 3", 4 element corrector optics by Coastal Optical for full coma correction
*56" Carbon fiber tube with velvet lining near aperature
*Protostar secondary system with heater
*Open center supported primary mirror cell for fast cooldown
*Paralax split rings and male dovetail
*DewZee felt lined tube extension
*Custom nylon case for storage and transportation
*2.5" AP extender
*Quik point zero power finder
Total invested over $8700, Sell all for $6,500, will consider all reasonable offers.
Jpeg is available upon request.