Sky Mentor 65mm Extension Tube with T2 Adapter - 65EXT-T2 Adjustable Dew Shields The pressure tuner allows for

The pressure tuner allows for far greater granularity in the bandpass adjustment which allows you to fine tune the instrument for maximum detail

greatly simplifying cable management

If you add a second (optional) weight

Battery Power: 2AA-included

Eyepieces accepted: 2" or 1

Sky Mentor 65mm Extension Tube with T2 Adapter - 65EXT-T2 Adjustable Dew Shields The pressure tuner allows forSky Mentor Extension Tube Adapter to T2 Mount The Sky Mentor Extension Tube cylinder length is 65mm Fits all standard 1. 25" telescopes and microscopes or 2" with 2" to 1. 25" adapter installed (sold separately Accepts a standard 1. 25" filter Made of high quality, durable aluminum alloy T2 thread is M42*0. 75