2'' TUBE EXTENSION - 80mm pier The fans are controlled by

The fans are controlled by a switch on the optical tube

you can use any of the optional M56 adapters with stop ring in order to connect cameras or accessories you use for your setup:

QHY-AP900-POLE

positioned below telescope rings

outer diameter 60mm (used for M-Uno and M-Zero mounts)

2'' TUBE EXTENSION - 80mm pier The fans are controlled byExtension tubes are used when the optical tube is too short and the focuser has not enough travel to reach the focus. This accessory increase the optical path of your telescope of 80mm. The tube include two thumb screws to secure the camera or the accessory used. The internal compression ring avoid any scratch on your accessory. The bottom part is threaded (M48x0. 75) to allow the connection of standard 2" filters. The safety groove stop the extension