Features:

1.The 1.25-Inch variable Polarizing filter acts like a dimmer switch for your telescope.

2.Adjust the amount of light transmission from 1% to 40% by rotating the filter housing.

3.Reduces brightness of the Moon or planets for great clear viewing.

4.Finer control of the image brightness compared to a standard fixed-transmission telescope filter for optimal performance.

5.Fit standard sized 2" eyepieces and accessories.