Starfield 160mm Focus Mask

Starfield 160mm Focus MaskThe Bahtinov mask is used focus sma telescopes accurately. Although masks have long been used as focusing aids, the distinctive pattern was invented by Russian amateur astrophotographer Pavel Bahtinov. Simply place the mask in front of the main optic of your telescope and take a picture. Look at the diffraction spike pattern and continue until the spikes are even. Using a Bahtinov mask is the easiest way to get into focus. This 160mm mask is great for

It will be parfocal with both 2" and 1¼" eyepieces in this application

NexStar Evolution 6" (mount and OTA)

Using different exotic materials

03 lbs (10

and other hydrogen emitting nebulae

20") Diopter Adjustment Range: ±3 Twilight Factor: 18

5 Focal Length of Eyepiece 1 25mm (0

transits of the International or Chinese Space Stations

The Omni 56mm is perfect for viewing deep sky objects

counterweight

NexStar Evolution (note: telescope comes with an equivalent AC adapter/charger)

The only difference is that one side is cut off in order to make them usable on any binocular – even when the bridge is nearly closed