Astrophotographers hangout. Invite friends and notice chat bar on bottom.
The 254 mm. Aperture Quartz Coated 1,200 mm. Focal Length, F/4.72 , 1/10 Wave to Peak to Valley Slightly better than Diffraction Optics Parabolic Newtonian Telescope from SkyWatcher Reflector Dobsonian Telescope in the Bright Large Sunshine House Living Room of Astro Imager Jules M. Vieira's Bright Large Living Room!