Object: | Sh2-240 |
Date of exposures: | 12.02.2017, 13.02.2017, 14.02.2017, 15.02.2017 |
Distance: | 3.000 Lightyears |
Exposures: | Ha: 17 x 1800 Sec., [O III]: 13 x 1800 Sec., Sum: 15,0 hrs. |
Telescope: | Takahashi FSQ85 |
Focal length: | 450 mm |
Filter: | Astrodon H-Alpha 5nm, [O III] 3nm |
Camera: | Atik 490Exm |
Guiding: | Off Axis Guider, Lodestar |
Mount: | EQ8 |
Simeis 147, also known as the Spaghetti Nebula, or Sharpless 2-240, is a supernova remnant (SNR) in the Milky Way, straddling the border between the constellations Auriga and Taurus. Discovered in 1952 at the Crimean Astrophysical Observatory using a 25-inch Schmidt-Cassegrain telescope, it is difficult to observe due to its extremely low brightness.The nebula has an apparent extent of about 3 degrees; This corresponds to a huge size of about 140 light years with a distance of an estimated 3,000 light years. Sh2-240 is about 40,000 years old.
Since such a huge object does not fit into my image field, this capture was created as a 4 panel mosaic. In order to depict the object in its entirety, 9 parts would be necessary. You can see the story in my blog...