Astronomy and Stargazing Projects
Hunting Giant Planetary Nebulae
Mind your elders the next clear night and pay a visit to some of Spring's biggest and most ancient planetary nebulae.
Equipment: Guides & Recommendations
Wide-angle oculars from Olivon
Telescopes Galore at NEAF
Dozens of new products debut at the Northeast Astronomy Forum & Telescope Show.
Astronomy Online with Stuart Goldman
Scope Calculator Applet Added
Try out a new addition to our suite of interactive observing tools.
Choosing Your Astronomy Equipment
A Pupil Primer: How Big Should a Telescope's Exit Pupil Be?
Image brightness, magnification, and why the old ideal of a 7-millimeter exit pupil is not so ideal at all.