USB Cooling Fan for 10" and 12" Dobsonians Ritchey-Chrétien Add the StarSense AutoAlign System

Add the StarSense AutoAlign System for effortless setup

Diffraction limited "on-axis" performance is a given

The new Optical acrylic sheet offers 92% of light transmission that gave you the highest and brightest diffraction Spikes for Focusing - about 3 times brighter than traditional bahtinov masks

perfect for deep sky objects and a bright detailed view of the moon’s surface

USB Cooling Fan for 10" and 12" Dobsonians Ritchey-Chrétien Add the StarSense AutoAlign SystemUSB operated cooling fan for StarSense Explorer 10 and 12" Dobsonian and other Dobs and reflectors with a compatible fan mount Speeds up the cooling of the primary mirror to the ambient air temperature resulting in crisper, better focused views in less time Mounts directly to the rear cell of the StarSense Explorer 10 and 12" Dobsonian telescope Integrated storage clip to secure the USB cable when not in use The Celestron USB Cooling Fan is the ideal