Contact information

Skywarden,
Ursa Astronomical Association
Kopernikuksentie 1
00130 Helsinki
taivaanvahti(at)ursa.fi

Ursa Astronomical Association

NGC 2237 - 20.11.2020 at 02.46 Kauhava Observation number 94966

Visibility IV / V

Jari Kankaanpää, Lakeuden Ursa

The hydrogen rose Rosette flies midnight into the winter southern sky stage. This huge emission nebula can be found in the unicorn constellation. The distance of the fog is about 5,000 light-years. In the middle of it is an open array of hot stars that have blown a bubble into the surrounding hydrogen vapor. The cloud itself is 130 light-years in diameter. It contains a wealth of interesting structures and star-bearing regions.



More similar observations
Additional information
  • Observation target
    • Deep space object
  • Designation
    • NGC 2237
    • Näyttävä
  • Constellation
    • Monoceros
  • Brightness in magnitudes
    • 9
  • Darkness
    • Average
  • Seeing
    • Good
  • 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

Nikkor 400mm f: 2.8, Asi 174mm & H-alpha filter 50x 30-50sec (fog structure). Nikon D810a 7x30sec (colors) .Following Meade 12SCT. Sharp Capture & Photoshop.

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