Cool your primary mirror to an ambient temperature and start observing quickly with this USB Cooling Fan for Dobsonian Telescopes from Celestron. Built for Celestron StarSense Explorer 10" and 12" Dobsonian telescopes, the fan is powered by any USB source, including AC, power banks, etc. It also fits on many other Dobsonian and Newtonian reflector telescopes, as long as they have a compatible fan mount footprint (four M4 x 0.7 threaded holes in a square pattern with holes spaced 71.5mm apart).
UPC: 050234942560