Anaxagoras Crater – February 6, 2017

Anaxagoras Crater – diameter is 52 km and it is about 3.0 km in depth. It is located in the north polar region of the moon. Named after the Greek astronomer (500-428 BC). It is a relatively recent crater that has rays extending down to the crater Plato.

Tech Specs: ZWO ASI290MC camera and Meade 12” LX90 telescope mounted on a Celestron CGEM-DX mount. Software used included Sharpcap v2.9 and AutoStakkert! Alpha Version 2.3.0.21. Photographed on February 6, 2017 from Weatherly, Pennsylvania.

Online Information:

Wikipedia (https://en.wikipedia.org/wiki/Anaxagoras_(crater))

NASA (https://www.nasa.gov/mission_pages/LRO/multimedia/lroimages/lroc-20110531-anaxagoras.html)

The Planetary Society (http://www.planetary.org/multimedia/space-images/earth/20140317_moon_lro_anaxagoras.html)

…Tom

The Changing Face of Venus

Here is a collection of Venus images from December 2016 to February 2017 showing how the size and phase of Venus has changed as it starts to move between the Earth and the Sun. Eventually, Venus will pass between the Earth and Sun and emerge into the morning sky once again.

TheSkyLive.com has a nice animated solar system map that you can view online (https://theskylive.com/).

Imaging Tech Specs: Meade LX90 12” Telescope, ZWO ASI290MC camera at prime focus, each image was composed of the best 2,000 frames of 10,000 frames sampled. Taken from Weatherly, Pennsylvania. Software included Sharpcap v2.9, AutoStakkert! Alpha Version 2.3.0.21, Registax, and Adobe Lightroom.

Additional information:

…Tom

Corvus the Crow

The constellation Corvus reminds me of two things, an upside down “keystone” and the famous Sombrero Galaxy (actually in the constellation Virgo just across the border). Personally, I see no crow, raven or any other bird-like figure in this constellation.  Corvus ranks 70th in area out of the 88 constellations.

A special thank you to the U.S. Naval Observatory and the Space Telescope Science Institute for the graphic of Corvus used in my image. The illustration was obtained from the 17th century Firmamentum Sobiescianum sive Uranographia star atlas by Johannes Hevelius.

Tech Specs: Canon 6D with a Canon EF70-200mm f/2.8L USM lens tripod mounted. Single 8 second exposure, ISO 3200, 70mm, f/2.8, Tiffen star filter. Imaging was done on February 3, 2017 from Weatherly, Pennsylvania.

Additional information:

…Tom

Venus Casting a Reflection on Ice

Here is a view I captured last evening, February 14, 2017, showing a nice bright reflection of Venus on the ice covered snow in my backyard in Weatherly, Pennsylvania.

Tech Specs: Canon 6D with a Canon EF70-200mm f/2.8L USM lens tripod mounted. Single 3.2 second exposure, ISO 3200, 70mm, f/2.8, Tiffen star filter.

…Tom

Tycho Crater – February 6, 2017

Tycho Crater – diameter is 86 km and it is about 4.8 km in depth, located in the southern region of the moon. The crater was named after Danish astronomer Tycho Brahe (1546–1601). From Wikipedia, “The crater is sharply defined, unlike older craters that have been degraded by subsequent impacts. The interior has a high albedo that is prominent when the Sun is overhead, and the crater is surrounded by a distinctive ray system forming long spokes that reach as long as 1,500 kilometers. Sections of these rays can be observed even when Tycho is illuminated only by earthlight. Due to its prominent rays, Tycho is mapped as part of the Copernican System.”

Tech Specs: ZWO ASI290MC camera and Meade 12” LX90 telescope mounted on a Celestron CGEM-DX mount. Software used included Sharpcap v2.9 and AutoStakkert! Alpha Version 2.3.0.21. Photographed on February 6, 2017 from Weatherly, Pennsylvania.

Online Information:

…Tom

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