Image of the day

From the
ATWB Customer Gallery

Sh2-115 Nebula

My Account

New to Astromart?

Register an account...

Need Help?

Other

Ode to the Othoscopic Eyepiece

Posted by Jim Shepard 07/19/2004 12:00AM

For all you Ortho fans out there.

Wild Card 003: Making Some Sense of the Strehl Ratio

Posted by Rick Shaffer 06/21/2004 12:00AM

Wild Card 003:  Making Some Sense of the Strehl Ratio

In this installment of "Wild Card", telescope designer Rick Shaffer gets out his slide-rule and takes you through the arcane world of "P2V", "RMS", and how they relate to the "Strehl Ratio", the new "Gold Standard" for describing an optic's performance in imaging a star.

Wild Card 002.1 "Defending Our Planet from Invasions from Space" PLUS a LOT More!

Posted by Rick Shaffer 06/14/2004 12:00AM

Instead of a story about a practical joke, Rick Shaffer makes some serious suggestions about how we ought to be thinking about SETI, CETI, and rocks falling from the sky. Just for a little variety, there's more about the exit pupil, plus some "shameless commerce"!

WILD CARD 002 "SETI, a 'Big Ear', and Practical Jokes"

Posted by Rick Shaffer 06/07/2004 12:00AM

WILD CARD 002 "SETI, a 'Big Ear', and Practical Jokes"

In this edition of his column, Rick Shaffer takes you to a corn field in Ohio. And, the reference to a "Big Ear" doesn't refer to prize winning ear of corn!

Review and Article Submissions

Posted by Paul Walsh 06/04/2004 12:00AM

Participate in our weekly review contest and win a $50 or $100 store credit with Anacortes Telescope and Wild Bird...