We are your source for astronomy telescopes, eyepieces, astroimaging cameras, and more! You don't have to wait for lengthy telescope cooldown with this handy and effective cooling fan. Even though it takes alot of D Cell batteries, I have been running it for about a hour for the last 11 months and its still going strong. Since the Three-Fan Cooling System current draw is … Browse an extensive selection of astronomy equipment at Telescopes.net. Cooling your telescope optics significantly improves the quality of views through your reflector. Uses eight D-cell batteries (not included). For best results, run the Orion Three-Fan Cooling System prior to using the reflector telescope. I use the same Orion fan on my XT8 with no other modification. Orion Ventilateur pour télescope Dobson N° d'article : 47950 Fabricant : Orion. bonsoir, ce sont des télescopes avec une monture simplifie qui ressemble a un socle rotatifs , trés prés du sol, pas de trépieds . Three-fan set custom designed to fit the Orion XX14g and XX16g GoTo Dobsonian primary mirror cells Enjoy optimized visual performance quickly Each fan boasts 33.4 CFM (cubic foot per minute) air flow to help significantly accelerate cooling of your Dobsonian telescope's optics I have also noticed that if I keep the OTA cover on and remove the focuser cap, that a stream of air will blow out of my focuser, so I know the fan is doing its job. Power is supplied using the included battery holder which accepts 8 D-cell batteries (batteries not included). Speed up the cooling of your big reflector telescope's optics with this small, quiet fan. Sofia (pour Stratospheric Observatory for Infrared Astronomy) est un observatoire volant installé à bord d'un Boeing 747. You can also use the cooling fans intermittently between observations to compensate for any ambient temperature changes that may occur.
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