Deep Sky Object in Summer
Molecular Cloud around η Draconis

Click on image to enlarge

Date & Time: Sep 17 2023, from 20:23 to 21:51 JST(+0900)
Composed 30 shots with 3 minutes exposed
Optical: AF zoom-Nikkor ED 80-200mmF2.8 (f=135mm, Aperture: F4.0)
with Kenko Starry-Night filter
Auto-guided with Kenko SKYMEMO Equatorial
Digital Camera: Nikon D810A
Location: Furudono town, Fukushima pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(7360×4912)
Device Size...FX format(36×24mm)
Sensitivity...ISO1600, White Balance...Daylight


LBN406 / Molecular Cloud, type 6 R
R.A.16h 46m 00.0s (2000.0)
Dec.+60°16' 00" (2000.0)
Apparent Size120×30'
Real SizeN/A
Magnitude -
DistanceN/A
This image captured a field around the center of Draco with a span of 6.9×10.2°. A 3rd magnitude star at right-hand side of this image is η Draconis (Athebyne). You can detect an extraordinary dimmed molecular cloud just east of the star. Although the field is far from the Milky Way, the cloud has been considered as a minor bank of interstellar gaseous matter gathered by chance. An apparent rough span can be estimated as a bit smaller than 5 degrees; you can see a comparatively dense cloud LBN406 at the southern edge.
This image has been cropped with an equivalent focal length of 200mm.


Deepsky objects around ηDraconis Deepsky objects around ηDraconis



Abell 74
NGC5643

Copyright(c) 2023 by Naoyuki Kurita, All rights reserved.
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