Constellation tour in Winter
Puppis (The Stern)

Click on image to enlarge

Date & Time: Dec 10 2021, from 26:37 to 26:46 JST(+0900)
Composed 4 shots with 3 minutes exposed
Optical: TAMRON 17-35mm Di OSD (f=28mm, stop: F3.5)
with Kenko Softon Clear & Starry Night filters
Auto-guided with EYEBELL CD-1 portable 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 		Formerly, the lower southern sky in winter was occupied by a gigantic constellation "Argo Navis", the Argonauts' ship. The constellation had a span of over 70 degrees in east-west direction, and was the largest asterism in the heavens exceeding Hydra, which is presently the largest one. In the mid-18th century, Lacaille divided the older constellation into four smaller constellations: Carina, Pyxis, Vela, and Puppis.
The constellation of Puppis represents the Stern of the Argo Navis. You can find it just southeast of Canis Major as a large and a bit warped square formed by 2nd or 3rd magnitudes. Puppis crosses the meridian at fairly lower sky in Japan, it might need clear sky to recognize the entire constellation.


Guide for Deep Sky Objects

M46, M47 .....Paralleled open clusters at NE region in Puppis
M93 .....Medium-sized open cluster 2 degrees NE of zeta Pup, 3600 ly. away
NGC2298 .....5'-sized globular cluster in western region, 30 thousand ly away
NGC2438 .....Bright planetary nebula bathed in an open cluster M46
NGC2467 .....Open cluster & Nebulosity bathed in the Milky Way
NGC2451, NGC2477 .....Pair of open clusters at south region in Puppis
NGC2539 .....A 20'-sized open cluster at the northeast edge of the constellation
Wide-field around M46 & M47 .....Open clusters M46 & M47 and small nebulae distributed around SW of it
Sh2-299, Sh2-300 .....Two parelleled diffused nebulae at 11deg. east of Sirius
Sh2-302 .....Round & compact reddish nebula in western edge
Around Sh2-306 .....Four red Hα nebulae clustered within 2 deg. area, located 11 deg. ESE of Sirius.
vdB98 .....Small reflection nebula at 6.4deg. ENE of δCMa
Gum Nebula .....Vast supernova remnant in Milky Way of Puppis & Vela.



Canis Major
Monoceros

Copyright(c) 2021 by Naoyuki Kurita, All rights reserved.
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