NGC 246, Skull Nebula

About image 

NGC 246 is a planetary nebula visible in the constellation of the Whale.
Also known as the Skull Nebula, it is quite large (4.6 'x 4.1') and bright: the disc is irregular and shows traces of a ring structure. 

The central star is 12th magnitude and the actual diameter of the nebula it created is about 6 light-years. 

The distance from the Sun is estimated at 2100 light-years.

Technical data
Optic         GSO RC12 Truss - Aperture 304mm, focal lenght 2432mm, f/8
Mount       10Micron GM2000 HPSII
Camera        ZWO ASI 2600 MM Pro with filter wheel 7 positions
Filters        Astrodon Gen2 E-Serie Tru-Balance 50mm unmounted LRGB  
Guiding system   ZWO OAG-L with guide camera ASI 174MM
Exposure details    L 24x300" bin3 -15C

             R 10x300" bin3 -15C
             G 10x300" bin3 -15C
          B 11x300" bin3 -15C
Total integration  4h35'
Acquisition      Voyager, PHD2
Processing      Pixinsight 1.8, Photoshop CS5, StarXTerminator, NoiseXTerminator
SQM-L       21.06   
Location       Promiod (Aosta Valley, Italy), own remote observatory
Date           19/20/22 September 2022


© Roberto Marinoni 2019 - All rights reserved