Eyepiece Projection

Eyepiece projection is a great way to take detailed shoots of moon and planets. Photographed objects in these images are considerably larger and show more detail than such taken with prime focus shots. Prime focus techniques replace the camera lens with a telescope OTA (no diagonal, no eyepiece), but eyepiece projection adds an eyepiece into the optical path, increasing focal … Read more

German Equatorial Mount – Part 1

This article explains how German Equatorial Mounts work. It consists of 2 parts:  The first part provides a general overview about these mounts. GEMs require polar alignment; it will be discussed what this is and how it is done. Part 2 talks about more specific subjects like Declination, Right Ascension, setting circles, mount balance and load capacity. Most … Read more