Sky Mentor Image Erecting 1.5X Barlow for Newtonian Reflector Telescopes - 1.25" - R90813 ZWO Telescopes This StarField Bahtinov Mask is

This StarField Bahtinov Mask is sized for 125 mm - 130 mm telescopes and fits dew shields with an outside diameter of 153 mm to 192 mm

and certainly is better in transmission and reflection reduction than uncoated eyeglass

The OIII filter is a typical representative OIII offering available from Astronomik's product line

Model C26A3 Center-balanced Equatorial Mount from iOptron delivers precise pointing and accurate tracking

Sky Mentor Image Erecting 1.5X Barlow for Newtonian Reflector Telescopes - 1.25" - R90813 ZWO Telescopes This StarField Bahtinov Mask isSky Mentor Image Erecting 1. 5X Barlow for Newtonian Reflector Telescopes 1. 25" This Sky Mentor Image Rectifier Universal Erecting Prism is a new roof design for Newtonian Reflector Telescopes, and 1. 5X means that it has a 1. 5x Barlow effect, It not only rectifies the image but also magnifies the image by 1. 5x. It also with standard M42x0. 75mm thread for astro photography. Specifications: Body Material: Aluminum Prism: BAK4 Prism Type: Roof