| 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 |
A minor constellation of Caelum (Chisel) is squeezed between Columba and Eridanus at the lower southern sky in winter.
The constellation has a principal star (alpha Cae) with only fourth magnitude and only 14 stars visible with naked eyes. Lacaille invented the constellation in 1763. Perhaps he made the strange constellation of tool to fill up the void in sky for the convenience. This image has been cropped with an equivalent focal length of 50mm. |
 Columba |
 Camelopardalis |
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Copyright(c) 2020 by Naoyuki Kurita, All rights reserved. |
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