Tag Archives: Betelgeuse

Aurora Dog over Alaska 

Image Credit & Copyright: John Chumack

Sometimes it is hard to believe what you see in the sky. While leading his annual aurora tour last month near Fairbanks in central Alaska, astrophotographer John Chumack and his company saw a most unusual aurora. This bright aurora appeared to change into the shape of a jumping dog, complete with a curly tail. He was able to capture the fleeting natural apparition in the above image with a 15-second exposure through a wide-angle lens. By coincidence, he also captured a background sky filled with familiar highlights. Planets visible include bright Jupiter through the dog’s front legs and reddish Mars below the dog’s hind legs. Stars visible include the Big Dipper stars above the dog’s midsection and reddish Betelgeuse shining on the far right. This dog would not be following him home, however, and within a few minutes morphed into other shapes before thegeomagnetic storm particles that created it shifted to strike the Earth elsewhere.

NASA APOD 29-Apr-14

Winter Triangle

7c17c283-5675-4190-b67c-1f21a55c85bb a7205b169a74c563d4c752929ac14ac7.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Copyright whwang
A bright asterism of the northern winter sky Winter Triangle  (part of Winter hexagon) . Its corners are the three 1st-magnitude stars Betelgeuse (α Ori), Procyon (α CMi), and Sirius (α CMa).

These three stars are three of the ten brightest objects, as viewed from Earth, outside the Solar System. Betelgeuse is also particularly easy to locate, being a shoulder of Orion, which assists stargazers in finding the triangle. Once the triangle is located, the larger hexagon may then be found.

Several of the stars in the hexagon may also be found independently of one another by following various lines traced through various stars in Orion.

The stars in the hexagon are parts of six constellations. Counter-clockwise around the hexagon, starting with Rigel, these are Orion, Taurus, Auriga,Gemini, Canis Minor, and Canis Major.

Imaging telescopes or lenses: Nikon AFS 28-70mm/F2.8 D
Imaging cameras: Nikon D800 Mod
Mounts: Takahashi 90S
Software: DeepSkyStacker, Adobe Photoshop CC, Auriga Imaging RegiStar
Dates: Jan. 1, 2014
Locations: Mt. Shiao-Shuei (Taiwan)
Frames: 96×300″ ISO400
Integration: 8.0 hours

Autor: Wei-Hao Wang

01 March 2014

We select the best works of amateur astrophotographers with details of equipment, shooting processing etc.

Mars and Orion over Monument Valley

Image Credit & Copyright: Wally Pacholka (Astropics, TWAN)

Welcome to The World At Night. Sharing the night sky seen around the world, this view from Monument Valley, USA includes a picturesque foreground of famous buttes. Buttes are composed of hard rock left behind after water eroded away the surrounding soft rock. The two buttes on the image left are known as the Mittens, while Merrick Butte is on the right. Recorded in 2007 December, planet Mars is at the left of the skyscape, a glowing beacon of orange that is the brightest object in the frame. To the right of Mars lies the constellation of Orion. Betelgeuse is the reddish star near the center and the Belt of Orion and the Orion Nebula are farther right. Finally, the bright blue star Rigel appears above Merrick Butte in this stunning view of The World At Night.
NASA APOD 02-Feb-2014

The Gegenschein Over Chile


Image Credit & Copyright:
 Yuri Beletsky (Las Campanas Observatory, Carnegie Institution)

Is the night sky darkest in the direction opposite the Sun? No. In fact, a rarely discernable faint glow known as the gegenschein (German for “counter glow”) can be seen 180 degrees around from the Sun in an extremely dark sky. The gegenschein is sunlight back-scattered off small interplanetary dust particles. These dust particles are millimeter sized splinters from asteroids and orbit in the ecliptic plane of the planets. Pictured above from last year is one of the more spectacular pictures of the gegenschein yet taken. Here a deep exposure of an extremely dark sky over Las Campanas Observatory in Chile shows the gegenschein so clearly that even a surrounding glow is visible. Notable background objects include the Andromeda galaxy, the Pleiades star cluster, the California Nebula, the belt of Orion just below the Orion Nebula and inside Barnard’s Loop, and bright stars Sirius and Betelgeuse. The gegenschein is distinguished from zodiacal light near the Sun by the high angle of reflection. During the day, a phenomenon similar to the gegenschein called the glory can be seen in reflecting air or clouds opposite the Sun from an airplane.
APOD NASA 14-Jan-2014