ALPINE ASTRONOMICAL Baader Rowe Coma Corrector for Newtonians Diodes this cover helps break up

this cover helps break up the shape of the lens

Tether Helps Prevent Lens Creep

Note: This item is non-returnable

A new bottom thumb button provides greatly extended functionality when used with the included driver

ALPINE ASTRONOMICAL Baader Rowe Coma Corrector for Newtonians Diodes this cover helps break upFor Reflector OTAs from f 3. 5 to f 6 Optimized for f 4 Focal Ratio OTAs Triplet Lens Configuration Phantom Group Multi Coatings Adds 91. 5mm Back Focus Distance For 2" Focusers and Drawtubes Does Not Affect Magnification or f Value Stop Ring for Precise Depth Placement Threaded for 2" Eyepiece Filters Standard Male T Mount Threads Designed by Dave Rowe, the Alpine Astronomical Baader Rowe Coma Corrector helps to solve a common problem with Newtonian