HR Variable Coma Corrector (2-inch) With T2 Adapters Series_AR Doublet you notice the stars at

you notice the stars at the edge have taken on an unnatural comet-like shape

and smartphone adapter—make it easy to start observing and imaging right away

steady viewing with the Alpen Optics Kodiak 8x42 Binoculars

Focal Ratio f/15

HR Variable Coma Corrector (2-inch) With T2 Adapters Series_AR Doublet you notice the stars atAfter 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