Interesting facts about telescopes

Credit: European Southern Observatory (ESO) / https://www.eso.org/public/germany/products/mountedimages/mounted_0163/
Things to know about telescopes mounts and accessories

The range, types, and capabilities of telescopes and mounts seems infinitely vast.
And you may be wondering:

Which telescope is the "best"?
What do aperture, focal length and aperture ratio mean for a telescope and where do they play a role?
What types of telescopes are there? What are their advantages and disadvantages?

As I have the answers to your questions, here ...
...and of course anytime by email or phone.

My first night...
The first night with the telescope should be something special

Properties of telescopes
What types are there and what are their
advantages and disadvantages?

Tips and tricks
A checklist in case you can't see anything through your telescope

Adjusting the mount
4 methods how to align your mount to the celestial north pole

Adjustment of a Newtonian telescope
How to use a laser to adjust your reflector telescope

Aperture of a telescope
What does the aperture of a telescope tell me
and why is it so important?

Magnification of a telescope
What does magnification mean and how can I determine it for my telescope?

Entrance and exit pupil
What are entrance and exit pupil and
what are they important for?

The right magnification
What magnifications should I produce with my telescope and why?

Resolving power
What does it tell me and 
what does it depend on?

Observing Apollo?
Can I observe the Apollo 11 landing module with my telescope?

Obstruction
What does obstruction mean and how does it affect my observation?


Filter
Which filter can do what and which
filter do I (not) need?


Mounts
What kind of mounts are there and what
are their advantages and disadvantages?