Optolong Variable Polarizer Filter 2 Inch 94055 The optical design cleverly folds

The optical design cleverly folds a long focal length into a tube length of highly compact dimensions

it was a revelation through the Skymax…This telescope certainly does a good job on the more detailed Solar System objects…In the deep sky

this filter can also help with observations of other bright objects like Venus and Jupiter

Tripod leg diameter: 2"

spotting scopes

Optolong Variable Polarizer Filter 2 Inch 94055 The optical design cleverly foldsOptolong Variable Polarizer Filter 1. 25 A variable polarizing Moon filter consists of two single polarizing filters coupled together. One of these has threads to attach to the bottom of eyepieces or other threaded adapter barrels, and the second filter can freely rotate over 360 degrees, thus allowing you to control the brightness of the image over a wide range. You simply rotate the lower filter until the image brightness is pleasing and comfortable