Location/ Date:

Eggersdorf, GER/ 13.+  14.+ 16. + 17. February 2018

Telescope/ Lens:

10" f/4 ONTC Newton

Mount:

Celestron CGE GPS

Camera:

Atik 383L+

Exposure time/ Filter:

22x 1200" Astronomik Ha 6nm

14x 1200" Astronomik [OIII] 6nm

  9x 300“   Astronomik RGB each

Total exposure time:

14,2 hours

Description:

VRO 42.5.01 is the remnant of a supernova, which is visible in the northern constellation Fuhrmann. It is located near the bright star Capella, the main star of the constellation and consists of two soft nebulous filaments.

The object has an unusual shape in the form of a shell structure, which interacts with a cavity of the interstellar medium.  The south-western part of the arched form came into contact with this cavity during its expansion and was deformed by interactions. The structure in the cavity expanded and produced a wider wave of propagation. On the opposite side, it emerged again, creating the arched structure.

The distance of the supernova remnant is estimated at about 14,700 light years. The age was determined by an X-ray study for 13 to 24,000 years.