Tools and information to assist Astronomers and Astrophotographers with their trade:

Telescope Field Of View And Power Calculator

Time and Date

Julian Date Converter - USNO

Sun and Moon
Today's Lunar Data - Heavens Above

Earth's Seasons Equinoxes, Solstices, Perihelion, and Aphelion,1992-2020 - USNO

Observation Information:
Current Constellation Map of the Sky - Heavens Above
Current Solar System Planet Locations - Heavens Above
Planet Summary Information - Heavens Above

Satellites and Minor Planets:
International Space Station Visible Passes - Heavens Above
Hubble Telescope Visible Passes - Heavens Above
Near Earth Object Passes - NASA / JPL

On-line Magazines:
Sky and Telescope Magazine - My favorite website for amateur astronomy.
Astronomy Magazine - Another resource for interesting astronomy topics.

On-line Educational Resources:
Students for the Exploration and Development of Space - This is a very good website for raw information.
StarDate Online - Very useful information from The University of Texas McDonald Observatory.
Heavens Above - Information on satellites or astronomy.

Astronomy Picture of the day Website:
Astronomy Picture of the Day - A great bookmark, learn something new everyday.

Observatories: - Home of the Hubble Space Telescope.

Astronomical Associations:
San Diego Astronomy Association - My local astronomy club of which I am a proud member.

Where to get your gear:
Astromart - Where I spend most of my day chatting, buying and trading.

Fellow amateur astronomer websites:
The Firmament - by Jan Timmeran of the Netherlands. He has great info on web caming
Bob Austin's Astronomy - A San Diego Astronomy Club member and friend with lots of good info photos.
Jim's Thomes Unconventional Astrophotography - A San Diego Astronomy Club member and friend who does beautiful photography with limited equipment.

Last updated on November 6, 2018