Observing Variable Stars: Types, Light Curves, Methods
A practical, science-backed guide to observing variable stars—types, light curves, gear, filters, calibration, and how to contribute data to AAVSO.

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.
A practical, science-backed guide to observing variable stars—types, light curves, gear, filters, calibration, and how to contribute data to AAVSO.
Compare upright and inverted microscopes: optical paths, ergonomics, sample compatibility, and trade-offs to choose the right stand for education or research.
Learn narrowband imaging with Hα, OIII, SII and dual-band filters for OSC and DSLR cameras. Master capture, calibration, processing, and color mapping.