Sh2-240, supernova remnant
Open cluster and star formation region in the Auriga constellation.
Powder and emissivity fog in the constellation Cassiopeia.
Click on the image for a larger version.
Pentacon 200mm f4 objektív
Atik ONE 6
SkyWatcher EQ6 GoTo
Ha,OIII- RGB all: 33,5 hour
2018.10 és 11 mon Vecsés, Ágasvár
Maxim DL, Registar, Photoshop CS6
Sh2-240 is about six times the diameter of the full moon. The size of the fog is estimated at 150 light years and its distance is 3000 light years. Approximately 40,000 years ago, a supernova exploded, creating a swirling star reminiscent of the image. The S147 was discovered in 1952 by the Crimean Astrophysical Observatory. The Bull appears in the constellation, so it can be best observed in late autumn / winter. I have never been able to observe myself visually, and the photo shown here is for 4 years. Of course, this is not the case, but every year I started to photograph the object and I always come to cancer, so faint that my equipment was not enough for it. Even now I'm not completely satisfied, maybe next time ....