Telescopes, Eyepiece, Focusser

This page will handle the optics needed to get a view or pictures anyway.
I will expand the subjects with things I encounter along the way working with them.

Telescope

My telescope is the Celestron EDGE HD 8" that I bought at Ganymedes in Amstelveen in The Netherlands.

Diagonal

I have never used the Diagonal that came with the scope. The diagonal is one of those strange expressions for the optics that bends the image train (the total of optics that you look or shoot thru) 90 degrees. This can be achieved by a prism or a mirror. The one that comes with the scope should be usable but I have bought a better one directly. It is quite bigger and lets much more light pass through.
For comparison I will add an image of the standard diagonal later.
At Ganymedes

Eyepiece

The eypiece is the part which you look into. The one that comes with the scope carries the same story with it as the diagonal does so... I replaced that as well. But that isn't that easy...
An eyepiece has a magnification of some sort and quite a few there are as well as qualities. The magnification of the eyepiece determines your view. Your scope has a certain focal length with its own magnification so your view is determined by the combination of the scope and the selected eyepiece.
This is an article on eyepieces. It is in Dutch but I guess it is safe to say that you'll get an idea of the complexity of eyepieces. Ganymedes advised me to take the Baader Hyperion Mark IV Zoom oculair 8-24

Focusser

When you are working with a telescope even exhaling in the direction of the tube is hazardous. Well maybe not but the scope is big and a touch shows when you work with those magnifications so manual focussing... forget it. Remedy: the focus motor. This little thing focusses for you and does that with much more finesse than you can ever achieve manually. And besides that, when you have the temperature sensor connected the computer can compensate for the micro shrinking and expanding due to the temperature changes.
Ganymedes