Astral Imaging at Dogwood Ridge Observatory

Latitude: 3748'51.0" N"
Scottsville, Virginia 24590


(click on thumbnails to go to that image's page)






Double Bubble Nebula (NGC2371-2)
Image Information

From Wikipedia, the free encyclopedia
NGC 2371
Hubble Space Telescope (HST) image of NGC 2371-2.
Observation data
(Epoch J2000)
Right ascension 7h 25m 34.7s[1]
Declination +29° 29′ 25.6″[1]
Distance 4400 ly
Apparent magnitude(V) 13
Apparent dimensions (V) 44
Constellation Gemini
Physical characteristics
Other designations NGC 2371,[1] NGC2372[1]
See also: Planetary nebulaLists of nebulae

NGC 2371-2 is a dual lobed planetary nebula located in the constellation Gemini. Visually, it appears like it could be two separate objects; therefore, two entries were given to the planetary nebula by William Herschel in the "New General Catalogue", so it may be referred to as NGC 2371, NGC 2372, or variations on this name.[1]

At 13th magnitude, this nebula is well within the limits of most amateur telescopes. Like most planetary nebulae, this one responds well to both high magnification and narrow-band filters, especially an OIII emission filter. It is listed within the RASC's 110 Finest NGC List

How to find[edit]

NGC 2371-2 is in the Gemini constellation which is visible in the latitudes between +90° and −60°.This nebula is easy to find because it lies southwest of Castor. Start at Castor and use the two bright stars that form an equilateral triangle to the southwest as a guide to tell you which direction to sweep. The nebula lies between the widest pair of three 7th magnitude stars that lie in a straight line. This planetary nebula is located at a distance of 4400 light years.

External links[edit]


  1. Jump up to:a b c d e "SIMBAD Astronomical Database"Results for NGC 2371. Retrieved 2007-04-20.










Double Bubble Nebula (NGC2371-2) 

Double Bubble Nebula (NGC2371-2)

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Double Bubble Nebula (NGC2371-2)



This image consists of 54 luminance, 20 red, 20 green, and 20 blue 15 minute exposures for a total of 28-1/2 hours. The rgb images are binned 2x2 while the luminance images are binned 1x1. All taken at -35C. All data was acquired using MaxImDl/CCD version 5.24 using ACP7.1.  Pix Insight version was used for processing. Dithered guiding was on.

Equipment and Location Information

Date Jan. 15 - 22, 2015
Location Dogwood Ridge Observatory
Optics Optical Guidance Systems 12.5" RC @f/9
Mount Astro Physics AP1200GTO
Camera SBIG STL-11002M/CW8
Filters Baader LRGB Ha 7nm,SII 8nm, OIII 8.5nm - 50.8mm Unmounted Filters
Conditions Temperature low to mid 20s - 30s with moderate to good  seeing. Transparency good.

  Last Modified :10/02/12 01:10 PM