Deep Sky Object in Summer
M27 (Dumb-bell Nebula in Vulpecula)


Date & Time: Nov 10 2018, from 18:25 to 19:12 JST(+0900)
Composed 10 shots with 5 minutes exposed
Optical: Meade 25cm(10") Schmidt-Cassegrain with conversion lens (f=1600mm, F6.3)
with BaaderPlanetarium Moon&Skyglow filter
Auto-guided with Meade LX200 Equatorial & Pictor 201XT
Digital Camera: Nikon D810A
Location: Ooizumi, Hokuto city, Yamanashi pref.

Camera Settings: Recording Format...14bit CCD-RAW, converted to 16bit TIFF(4080×4080)
Device Size...20×20mm
Sensitivity...ISO4000, White Balance...Daylight


M27 (NGC6853) / Planetary Nebula, type IIIa
R.A.19h 59m 36.0s (2000.0)
Dec.+22° 43' 00" (2000.0)
Apparent Size8×4'
Real Size2.26×1.13 light yrs.
Magnitude7.6
Distance970 light yrs.
M27 (NGC6853), "Dumbbell Nebula" is a noted planetary nebula in the constellation of Vulpecula just south of Cygnus. Its odd shape has given this nickname. The nebula is bright and large, we can enjoy the humorous figure easily only with binoculars. I think good simile for this nebula is an apple's core.
The nebula is about 970 light years away, and luminous owing to a white dwarf star at the center with magnitude of 13.

⇒ Display the spectral profile of M27 (in new window)



M24(Star-cloud in Sagittarius)
M57(Ring Nebula)

Copyright(c) 2018 by Naoyuki Kurita, All rights reserved.
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