Celestial Coordinates and Time: RA/Dec, Alt‑Az, LST
Master RA/Dec vs Alt‑Az, sidereal time, precession, ecliptic & galactic coordinates, Equation of Time, and practical conversions for observers and students.

Guides to help with your Stargazing Adventure

Information on Galaxies, Stars, Constellations, Planets, Moons, Comets and Asteroids
Listen to Bernard Miller describe his journey into AstroPhotography and detail how he captured this stunning image of the Sculptor Galaxy.
Read the full article here.
Drew Evans talks about his passion for astrophotography, the equipment used and tips for post processing image data.
Read the full article here
Hear D.j Van Bourgondien as he talks about using his Celestron EdgeHD 8″ telescope to capture this image of the Fireworks Galaxy
Read the full article here
Get your free e-Book downloads, just click on the button below.
Below are a selection of our Articles, to find more click on one of the sections above, or use the Menu at the top of the page.
Master RA/Dec vs Alt‑Az, sidereal time, precession, ecliptic & galactic coordinates, Equation of Time, and practical conversions for observers and students.

The Meade 8” LX90 ACF is one of several flagship telescopes from Meade’s lineup. The lightweight LX90 fork mount can trace its origins all the way back to the late 1970s when Meade started selling their 2080 8” Schmidt-Cassegrain. The 8” LX90 ACF shares a lot with those original scopes but of course features full
Learn meteor shower science and practice: ZHR vs hourly rate, radiant altitude, observing, radio detection, major showers, and how to plan for outbursts.