The Crescent Nebula

Crescent nebula is a emission nebula in the constellation Cygnus at 5000 light years away from us. It is about 25 light-years across.

It is a rather faint object located about 2 degrees SW of Sadr. This object is a fascinating bubble of gas being carved out of the interstellar medium by the winds of an intensely hot star named WR 136. As this high-velocity wind hits a slower-moving stellar wind that the star previously produced when it became a red giant, the collision produces a shock front and the shell of gas we see: NGC 6888. The interaction is so energetic, in fact, that it also produces X-rays.

Swipe right to see the image from last year.

Equipment :

Mount  - SkyWatcher EQ6R Pro

Telescope - Celestron Edge HD 8" ,Nexstar 8SE OTA

Camera - ZWO ASI294MC Pro

Guiding Scope  - SVBony SV106

Guiding Camera - ZWO ASI120mm Mini

Acquisition - ZWO ASI Air Plus

Narrowband Filter - Optolong Lextreme


Exposure  - 5 min subs

Integration - 15 hr when imaging with Edge HD and 5 hr for the Nexstar 8SE Image

Gain - 120

Bortle Scale - 7

Software  - Pixinsight, Photoshop