HR Variable Coma Corrector (2-inch) Focal Length_2. 11mm - 20mm This effectively suppresses sodium vapor

This effectively suppresses sodium vapor lamps from street lighting and greenhouses (assimilation light)

And if you want to dive deep into astrophotography

This is a field flattener for refractor-type telescopes with a focal ratio of f/5 to f/7

Moderate tightening offers an infinite range of tension to best suit the application

making it ideal for beginners

HR Variable Coma Corrector (2-inch) Focal Length_2. 11mm - 20mm This effectively suppresses sodium vaporThis model does not come with the adapters that allow for a direct screw on connection to a camera. It can be used with a camera by using a 2 inch to 1. 25 inch adapter, SKU 510365, and the appropriate T2 adapter for your camera. After hours at the eyepiece, you finally get to view the fruits of your astrophotography labors. The stars in the center of the field pop like brilliant precise points of light. But as you survey the image, you notice the