Finally I could complete this project. I started in summer last year, could not continue on it due to bad weather and could finally acquire H and S and RGB channels.

This object is one of the most famous Wolf-Rayet stars and can be found in constellation Cygnus.

Wolf-Rayet stars are young hyper-massive stars which are so hot and bright that strong stellar winds permanently blow significant amounts of hot gas into the surrounding interstellar gas cloud and sometimes form beautiful bubbles of glowing gas. Due to its large mass these stars have a pretty short life of only a few million years and will terminate their existence in a huge supernova explosion.

This star WR134 is located about 6000 light years from earth and its explosion will not affect earth … it is too distant.

Note that the image contains in the upper half another Wolf-Rayet star (WR135), which however is not visibly surrounded by a similar bubble as WR134.

Borg 90FL
1.08 Flattener
ZWO OAG
ASI 2600MM Pro
ZWO EFW
Baader Ultra-Narrowband 3.5/4nm and broadband filter
OIII: 75x300s
H: 36x300s
SII: 36x300s
RGB: 40x30s each channel
Total Integration: 13h25m over 5 nights in 2 years
Bortle 4-5

PixInsight