Wolfram|Alpha Astronomy

Observatories & Telescopes

Observatories

get information about an observatory
Greenwich Observatory
compare observatories
Auckland Observatory, Tokai Observatory
do computations with observatory properties
Mauna Kea observatory/Potsdam Observatory elevation

Telescopes

interactively calculate magnifying power
telescope magnifying power
compute light-gathering power
light gathering power 70cm, 20cm