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Observatory Parameters
Feb 20
Lat. 39.0, Lon. -77.5
Clouds: Seeing:
Waxing Crescent
09:39 22:49

Frequently Asked Questions

What can I do here?

In this site you can find deep sky objects viewable from your location, check the weather forecast, use the Telescope Simulator, create an observing list, share your astrophotography without limits and much more.

For a more comprehensive list of features, please visit the tips page.

Is this site free?

This site is and will always be 100% free for as long as I run it. If you find yourself using the site regularly and would like to help me cover the maintenance costs, you can help me with a donation (even the smallest donation helps).

Where does the data come from?

Most of the data in this page comes from the Saguaro Astronomy Club, who let me use their Database version 8.1. Thank you! :-)

Since the first import, I've added more information manually such as familiar names for the objects and recalculated the surface brightness.

Note: additional calculations such as rise, transit and set times are approximate and provided just as rough estimates. You should not rely on these for critical tasks.

How accurate are the calculations?

For recreational purposes (which is the whole purpose of this site anyway), it's very accurate. You should expect calculated times to be no more than 5 minutes off.

Can I contact you?

Please, do! You'll find the contact form at the bottom of the page - feel free to use it and send me your comments, suggestions, report any problem, etc.

Astronomy Quote of the Day

“The purpose of life is the investigation of the Sun, the Moon, and the heavens.” Anaxagoras, Philosopher, 459 BCE
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