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NGC 2261

NGC 2261 (2017) Hubble's Variable Nebula

  • Constellation: Monoceros
  • Right Ascension: 6h 39m 10s
  • Declination: +8° 45′
  • Distance: 2,500 ly

NGC 2261 is often called Hubble's Variable Nebula. Named after Edwin Hubble, who carried out some of the earlier studies of this object. Discovered in 1783 by William Herschel, and was the first object photographed by the 200 inch Hale telescope.

It was Hubble who first noticed the changes in the nebula in photographs. The object changes in brightness and shadows in the structure of the nebula. The changes occur over weeks and months. The best theory explaining it, is dense knots of dust streamers cast shadows on the reflection nebula. The nebula is illuminated by the star R Mon, which is a young Orion type star. It is an irregular, eruptive type of variable star that can vary as much as 2 magnitudes in brightness.

Details
Category: Nebulas
Published: 17 March 2017
  • Reflection Nebula

Read more: NGC 2261 (2017) Hubble's Variable Nebula

  • Telescope: GSO RC10
  • Camera: ZWO 1600 MM
NGC 7822

NGC 7822

  • Constellation: Cepheus
  • Right Ascension: 00h 01m 08.58s
  • Declination: +67° 25′ 17.0″
  • Distance: 2,900 ly

NGC 7822 also referred to as Sharpless 171 is star forming region of gas and dust located in the constellation of Cepheus.

One of the stars in this region is BD+66 1673 is one of the hottest stars discovered in our corner of the galaxy with a surface temperature of 45,000K, and a luminosity of ~100,000 times of our Sun. It is an O5 type, and is also an Algol type eclipsing binary and the probable ionizing star of the region. It is also a member of the Berkley 59 star cluster.

 

 

 

Details
Category: Nebulas
Published: 03 November 2016
  • Emission Nebula
  • Telescope: EDT 80mm Reftactor
  • Camera: Atik 314l+
NGC 7023

NGC 7023 (2016) The Iris Nebula

  • Constellation: Cepheus
  • Right Ascension: 21h 01m 35.60s
  • Declination: +68° 10′ 10.0"
  • Distance: 1,300 ly

User Rating: 5 / 5


NGC 7023 is another reflection nebula located in the constellation of Cepheus. The light from a cluster of stars reflect off the dust grains with a blueish light.

 

 

 

 

Details
Category: Nebulas
Published: 09 September 2016
  • Reflection Nebula
  • Telescope: EDT 80mm Reftactor
  • Camera: Atik 314l+
NGC 7129

NGC 7129

  • Constellation: Cepheus
  • Right Ascension: 21h 42m 56s
  • Declination: +66° 6′ 12″
  • Distance: 3,300 ly

NGC 7129 is a reflection nebula located in the constellation of Cepheus. A young open cluster illuminates the surrounding gas with a blue light reflecting off the dust. Also in the picture on the left side is NGC 7142 which is another open cluster of stars.

Details
Category: Nebulas
Published: 09 September 2016
  • Reflection Nebula
  • Telescope: EDT 80mm Reftactor
  • Camera: Atik 314l+

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