Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)

Image of the day 05/24/2023

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    Caldwell 2 (NGC 40) & CTA 1 SNR, Mathieu Guinot
    Caldwell 2 (NGC 40) & CTA 1 SNR
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    Caldwell 2 (NGC 40) & CTA 1 SNR

    Image of the day 05/24/2023

    Getting plate-solving status, please wait...
      Caldwell 2 (NGC 40) & CTA 1 SNR, Mathieu Guinot
      Caldwell 2 (NGC 40) & CTA 1 SNR
      Powered byPixInsight

      Caldwell 2 (NGC 40) & CTA 1 SNR

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      Description

      Here is the planetary nebula NGC 40, or Caldwell 2 (also known as the Bow-Tie Nebula), surrounded by a part of CTA 1 (SNR G119.5 +10.2)  which is an extremely faint supernova remnant that consists of a 1.5 x 1 degree filamentary shell.
      Both of these objects are located in Cepheus constellation, but NGC 40 is approximatively 4,500 years old and at a distance of about 3.500 light-years while CTA1 is  approximatively 10000 years old and at a distance of about 5000 light years.
      NGC40's apparent size is only about 1 arc minute, but it presents interesting structures and the central star is clearly visible (crop version B).

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      • Final
        Caldwell 2 (NGC 40) & CTA 1 SNR, Mathieu Guinot
        Original
        Caldwell 2 (NGC 40) & CTA 1 SNR, Mathieu Guinot
        B

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      Caldwell 2 (NGC 40) & CTA 1 SNR, Mathieu Guinot