Askar 1x Full-frame Flattener for the 140 APO - 140APO-FLAT 68º Eyepieces All Metal Equatorial Mount

All Metal Equatorial Mount

let's talk comfort because stargazing should be a breeze

System Requirement:  Windows 7-10

f/4 effectively reduced to f/3

Askar 1x Full-frame Flattener for the 140 APO - 140APO-FLAT 68º Eyepieces All Metal Equatorial MountThis Askar 1X Full Frame Flattener is designed specifically for the 140APO. It does not change the effective focal length of the telescope, which is f 7, but it DOES further flatten the field, correcting for both field curvature and coma, to reveal fine star points to the edges of the field. The Askar 1X Flattener has a triplet design and supports a 44 mm image circle. The telescope side has an M91*1 thread, and the camera side of the flattener has a