Saturday, 11 December 2021

IC410 The Tadpoles.


As I may have mentioned before on my facebook page and even on here too the last 5 plus weeks of weather have been truly awful. However, 2 nights from Friday last week have been cold and clear but somewhat spoilt by the approaching full moon. So the filter wheel has rotated to the HA filter and the start of 2 projects IC410 & IC405 are born.

IC410 is a dusty emission nebula located in the constellation of Auriga at about 12.000 light years from Earth. It is part of a larger star forming region that also contains the Flaming Star Nebula (IC405). The gas structures in this picture are lit by the radiation from the open star cluster Ngc1893 that lies in the center of the nebula. This star cluster is about 4 million years old, but in astronomical terms it is still very young, with hot, massive stars. Just right of the star cluster two more dense structures are visible. Affectionately known as The Tadpoles these two structures are approximately 10 light years long these are similar to the famous Pillars of Creation and they are composed of dust and gas leftover from the formation of the star cluster and are very likely to give birth to more stars in the future. As can be seen in the image, these structures point away from the center of the nebula. This is because of the stellar winds and radiation pressure from the stars in NGC 1893. The really do look like they are trying to get back to the centre.


    25x 5 minute Ha subframes.

    Tadpoles crop
    Looking a little closer they really do look like tadpoles.

Lets hope for a few more hours of data to complete a Hubble Palette image.
Watch this space:

Image Details

  • Total Exposure:  2 Hours, 5 Minutes ( 25 Frames) x 5 Mins Ha (10/12/21)
  • Image Acquisition: ZWO ASIair Pro
  • Camera Settings:  ZWO ASI2600mm pro Gain 100, 0°C
  • Accessories: ZWO 7 position Filter wheel
    •                Optolong narrowand filters 
    •                ZWO broadband filters
    •                ZWO EAF
  • Calibration Frames: No Calibration
  • Stacking and Calibration: DeepSkyStacker
  • Processing: Adobe Photoshop 2020, 
  • Size: 2.26 x 1.38 deg 
  • Pixel Scale: 1.41 arcsec/pixel

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