Useful links

LINKS ABOUT ASTRONOMICAL OPTICS

Amateur Telescope Optics by Vladimir Sacek, everything about our instruments

Hyperphysics  – Fundamentals of physics for non-physicists

SCHOTT AG – Tables of optical glass properties

Limiting Magnitude Calculator – A useful tool for calculating the limiting magnitude

Basic optics – Fundamentals of optics fo amateur astronomers

 

COLLIMATION TUTORIALS

S&T Guide to Newtonian collimation

FAQ about Collimating a Newtonian telescope

Adventures in refractor collimation

Collimazione dei rifrattori Meade

Collimazione del rifrattore Takahashi Sky-90

 Collimazione degli SC di Thierry Legault

Collimating your SCT – di Rod Mollise

 

REVIEWS OF TELESCOPES AND ACCESSORIES

The Telescope Review Web Site

Cloudynights reports

Cloudynights user reviews

 

FORUMS

Cloudynights

Forum di Binomania e Astrotest

Astrofili.org

 

LINKS TO WEBSITES ABOUT SPECIFIC INSTRUMENTS

Weasner’s Mighty ETX Site

 

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