Constellation of the Month: December
Auriga (The Charioteer)

by: John Mirtle.
Page last updated: May 3, 2004

Contents
Small Scope Objects    Big Scope Objects    Challenge Objects    Maps    Photos

Small Scope Objects:

Name R.A. Decl. Details
  M36
(NGC 1960)
05hr 36.1m +34° 08' A bright, easy open cluster of 60 stars, mag. 9 to 14. Covers 15 arc minutes of sky, glowing at an integrated magnitude of 6.0. Naked eye from a dark location.
  M37!
(NGC 2099)
05hr 52.4m +32° 33' The richest of Auriga's open clusters. 150 stars mag 12 and brighter, a total population of at least 500 members. 20 arc minutes in diameter, magnitude 5.6.
  M38
(NGC 1912)
05hr 28.7m +35° 50' Another bright, easy cluster. About 100 stars, 21 arc minutes in size. The faintest of Auriga's Messier clusters at mag 6.4. Many bright stars, arranged in pairs.
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Big Scope Objects:

Name R.A. Decl. Details
  NGC 1907 05hr 28m +35° 19' Located just SW of M38, a mag. 8.2 open cluster. Visible in the same low power field as M38. 30 stars, mag 10 and fainter, 6 arc minutes in size.
  NGC 1931! 05hr 31.4m +34° 15' A reflection/emission nebula not far from M36. No magnitude stated, only 3 x 3 arc minutes in size. Look for a haze surrounding 4 close stars. (110NGC)
  NGC 1664 04hr 51m +43° 41' A nice open cluster SW of Capella. 40 stars 11th mag and fainter, 18 arc minutes in size. Total magnitude 7.6.
  NGC 1893 05hr 23m +33° 25' A small cluster of 60 stars embedded inside IC410. 11 arc minutes in size, magnitude 7.5.
  NGC 1985 05hr 37m +32° 00' A small emission nebula, only 3 arc minutes in size. Difficult object.
  IC 2149 05hr 56m +46° 07' A small planetary nebula, about 3° north of b Auriga. Mag 11.2 photographic, 10 arc seconds in size with a 11.5 mag. central star.
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Challenge Objects:

Name R.A. Decl. Details
  IC 405 and
IC 410
05hr 14m
05hr 22m
+34° 10'
+33° 27'
A pair of large but faint emission nebula. Good skies, low power and a nebula filter will be required to make these objects less invisible. 30 x 19, and 40 x 30 arc minutes in size. IC 405 is currently illuminated by AE Auriga, a fast moving "runaway star" originating from Orion.
  PK173-5.1 05hr 07m +30° 49' A difficult type 3 planetary nebula, located between the bottom 2 stars in the pentagon of Auriga. 132 arc seconds in diameter. Large, round, diffuse and very faint. Mag 13.7.
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Constellation Maps:

Lines No Lines Reverse Reverse No Lines


Lines No Lines Reverse Reverse No Lines No Map

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Photos:


 
Photo 1
South is at top to match the view in an inverting telescope.
Photo credit: John Mirtle.
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