HR Variable Coma Corrector (2-inch) With T2 Adapters families the BT-82 is ideal for

the BT-82 is ideal for enthusiasts seeking comfort

you make electricity flow through it (remember

and a red dot finder for easy navigation

Smooth slow-motion controls allow for fine adjustments

It offers students the opportunity to learn how lenses work

HR Variable Coma Corrector (2-inch) With T2 Adapters families the BT-82 is ideal forAfter 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 stars at the edge have taken on an unnatural comet like shape. Your long night has been marred by coma. Coma is a common plague of the Newtonian reflector design, and its annoying presence at the outskirts of an image can be a bane