69 results
plenty of elbow room

DIY: Astronomy Projects & Guidance

An Observatory with Sails

After working at Sky & Telescope for nearly a decade I got the chance to build the observatory I'd always wanted.

ready for the stars

Stargazing Basics

My "Flapping Roof" Observatory

By day my observatory looks like an ordinary (if rather grandiose) garden shed. At night the roof sections go down and back up. They "flap" like a bird's wings.

ready to observe

DIY: Astronomy Projects & Guidance

My Place in the Dark

Twenty weekends and countless trips to the building-supplies store later, I'd done it — I had an observatory to call my own.

Aligning an equatorial mount on Polaris

DIY: Astronomy Projects & Guidance

Accurate Polar Alignment with Your Telescope

Long-exposure astrophotography requires an accurately aligned equatorial mount.

Looking at the exit pupils

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.


Stargazing Basics

A Scale of Seeing

Amateurs long have recorded the seeing quality in their observing logbooks on a rather subjective scale of 1 to 10, with 1 hopeless and 10 perfect.


Stargazing Basics

8 Backyard Observatory Mistakes to Avoid

Here are a few potential problems that you might not see on your blueprints.

Binoculars: Guides and Recommendations

Binocular Basics: Glossary of Binocular Terms

Exit pupils. Eye relief. Image stabilization. What matters most for astronomers? Our expert explains it all.

outstanding collimation aid

DIY: Astronomy Projects & Guidance

Collimation Tools

Three tools are commonly used to collimate Newtonian reflectors.