Properties of telecops

Here is some information about the different properties of telescopes and what to look for before starting and during use:

A Newton should always be well adjusted and protected from stray light.
A refractor, the factory has always been a slight misalignment. Well adjusted before delivery, this adjustment stops during normal handling over many years, and has the dew shield and Tubusblenden a good flare protection. This must be the Newton later with e.g. Velour be introduced.

The fine adjustment should be done at the Newton observation place with a laser collimator or the star. This is easy to perform after some practice.

It should be noted that a motor driven on one mount Newton susceptible to camera shake, since this is the 8 "f / 5 1m and a 8" f / 6 is 1.2m long and 20cm minimum measuring tube diameter has a slight against the wind before can swing.

Tip:
Pay attention to stable mounts and a solid tripod and invest in the purchase, as vibrations very weaken the Beobachtungsfruede. Before you set so high quality eyepieces, invest in a previously stable base.


Handling:
An ED-APO with 5 "f / 7.5 is a maximum of 1 meter long, but has a smaller tube diameter. For instance, a equatorially mounted Newton are rotated in the pipe clamps, a refractor usually has a rotatable focuser and can spin the diagonal are set correctly ,
When beginners Dobson Newton are very popular as they sit stably on a rocker, are easy to build and bring large opening for little money.

This does not mean that a certain types of telescopes are better or worse, you just have to be aware of the different handling flat.