Category : Observing

Lunar Observing Primer

Categories: Observing
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Published on: April 29, 2013

The Moon is a great place to hone your observing skills. You can start with binoculars and learn the topography of our nearest neighbor. Using the Lunar 100 Map and the accompanying Lunar 100 List you will learn about 100 of the most interesting features on the near side of […]

Viewing the “Pup”

Categories: Observing
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Published on: January 19, 2012

One of the more prominent stars in the night sky and the brightest is α Canis Majoris, better known as Sirius or the “Dog Star. At a distance of 8.6 lightyears, Sirius is the fifth closest known star. It is a slightly bluish, white main sequence dwarf star of spectral […]

“X” Marks the Spot

Categories: Moon, Observing
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Published on: September 2, 2011

The Lunar “X” is a well-known “optical feature” on the Moon, which resembles the letter “X” when the lunar terminator is along just the right lunar longitude.  It is an excellent example of how the combination of lighting and topography can combine to produce apattern that repeats on each lunation, […]

The Week In Space – March 26, 2010

Categories: Observing, Planet
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Published on: March 29, 2010

‘VSS Enterprise’ takes flight and ‘space for the rest of us’ moves a step forward, the Martian Rite of Spring commences while the folks at JPL prep a ‘rover on steroids’ for departure for the Red Planet, the Wizard Nebula is ready for its close-up, Roller Derby on Saturn’s rings, […]

Sky This Week – March 21 through 27, 2010

Categories: Observing, Planet
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Published on: March 25, 2010

Mercury reappears in the evening sky. It will be 5 degrees to the lower right of Venus by the weekend. Mars is decreasing in apparent size and brightness. Saturn is at opposition on Sunday.

How to Observe Galaxies

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Published on: February 14, 2010

Here’s a tutorial from Astronomy Magazine on how to observe galaxies.

Viewing the “Pup”

Categories: Observing
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Published on: January 17, 2010

One of the more prominent stars in the night sky and the brightest is α Canis Majoris, better known as Sirius or the “Dog Star. At a distance of 8.6 lightyears, Sirius is the fifth closest known star. It is a slightly bluish, white main sequence dwarf star of spectral […]

Lunar Phase
Current Moon Phase
Courtesy: U.S. Naval Observatory

Current Sun
Current Sun Image
Courtesy: NASA

Clear Sky Chart
San Antonio Clear Sky Chart

Sun/Moon Rise/Set Times
Sun/Moon Rise/Set Times

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