| Constellation tour in Winter |
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| Date & Time: | Dec 12 2020, from 23:06 to 23:34 JST(+0900) |
| Composed 8 shots with 4 minutes exposed | |
| Optical: | TAMRON 17-35mm Di OSD (f=35mm, stop: F4.0) |
| with IDAS LPS-P2-FF & Kenko Softon Clear filters | |
| Auto-guided with Kenko SKYMEMO Equatorial | |
| Digital Camera: | Canon EOS 550D (Remodeled) |
| Location: | Ooizumi, Hokuto city, Yamanashi pref. |
| Camera Settings: | Recording Format...14bit CCD-RAW, converted to 16bit TIFF(5184×3456) |
| Sensitivity...ISO800 |
 Astroarts StellaNavigator |
Columba, the Dove, is a minor constellation just south of Lepus (the Hare).
The whole figure of Columba looks like "T" shape in culmination.
Columba shows the bird with flapping wings and holding a sprig of olive in its mouth.
The constellation first appeared in 17th century, and may refer to the dove in the story of Noah and the Ark. According to the investigation for the motion of stars close to the solar system, almost all of them seem to move forward to around the northern region in Columba. It's considered that the region agrees with the opposite point of the solar apex in Hercules. The sun and its all family are moving to the apex with the velocity about 19 km/s (12 miles/s) in the Galaxy. This image has been cropped with an equivalent focal length of 50mm. |
Guide for Deep Sky Objects| NGC1792 | .....Medium-sized spiral galaxy at 5.8deg. SW of εCol, 36.4 million ly away |
| NGC1808 | ....Galaxy in western edge, 35 million ly away |
| NGC1851 | ....Globular Cluster at the edge of southwest, 54 thousand ly. away |
| NGC2090 | .....Spiral galaxy at 1.5deg. est of αCol, 40.1 million ly away |
| NGC2188 & Abell3381 | .....Edge-on galaxy & far galaxy cluster at 2.6deg. WSW of δCol |
 Lepus |
 Caelum |
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Copyright(c) 2020 by Naoyuki Kurita, All rights reserved. |
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