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Ursa Astronomical Association
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Ursa Astronomical Association

NGC 3372 - 23.8.2019 at 19.45 Coonabarabran, New South Wales, Australia Observation number 86848

Visibility V / V

Juha Ojanperä, Porin Karhunvartijat

The fog of Eeta Carinae, or NGC 3372, was already visible to the naked eye as a hazy spot in the sky. However, the true beauty and proportions of the fog were revealed with a telescope. The fog is quite bright (3 magnitudes) and huge in size, its visual size is about 30 ', which is about the diameter of one full moon!

The mist itself is a mosaic of bright emission mist and dark mist passing through it. The dark dark line divides the fog into two parts, the northernmost of which is the brightest part of the fog. This brightest part of the nebula is a triangular nebula area with the apex of the triangle pointing towards the northwest. The southern half of the fog is somewhat dimmer, and the dark, dark fog lines further divide the southern half into three parts. The OIII filter was helpful in detecting fog, even though the fog is just fine on the filter.

More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • NGC 3372
    • Erittäin näyttävä
  • Constellation
    • Carina
  • Field of view
  • 245 arc minutes
  • Magnification
    • 17
  • Weather
    • Selkeää, tyyntä, kuiva ilma, +1C, SQM: 21.01
  • Darkness
    • Excellent
  • Seeing
    • Excellent
  • Nebulae
    • Emission nebula info

      In an emission nebula the hot stars nearby cause the gas glow. This should not mix with reflection nebula, where the gas is only lit up by nearby stars.

      The appearance of a gas nebula is irregular, and the fainter parts of it need bigger instruments to be visible.


      Emssion nebulae in Cepheus. The bigger part is composed of the nebulae Cederblad 214 (Ced214) and NGC 7822. The lower round nebula is called Sharpless 170 (Sh2-170). Image J-P Metsävainio.


      The Orion nebula. Image Samuli Vuorinen.


      In this 4-degree-field there are emission nebulae Sh2-157, Sh2-158, Sh2-159, Sh2-161 and Sh2-162 (or NGC 7635 aka Bubble Nebula) and open clusters M52 and NGC 7510. Image Juha Kepsu.


      NGC 281 aka Pacman Nebula. The object is in Cassiopeia. Image J-P Metsävainio.


      NGC 896 in Cassiopeia is the tip of Heart Nebula (IC 1805). Image Timo Inkinen.

Technical information

Visual observation, drawing on cardboard, telescope: L80 / 400 mm, eyepiece: Baader Hyperion 24 mm, scanned and slightly retouched with Paint Sho Pro

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