Starship Asterisk*

Hello Chris !

Thanks a lot for these very interesting explanations !

Now I have all informations I need !

Kind regards from Switzerland

Hello Chris ! Thank you for your explanations. I went on Wikipedia to understand more about magnification. If I correctly understand, the magnification depends of the lenght of the focal. so I can guess that the bigger the diameter of the primary mirror (for a newtonian telescope), the longer the fo...

Hello ! Since many years I dream about a telescope and I wish to buy one as big as possible but I wonder if there is any table explaining which is the optimal size regarding the quality of the local sky. I think of a table linking for example a city sky to a e.g. 10cm telescope, a village sky to a 2...