NGC 6820 – An emission nebula
Description:
The nebula NGC 6820 in the constellation of Vulpecula is a cluster of hydrogen gas located 6,000 light-years away. It is a site of star formation, and the radiation emitted by young blue stars pushes the gas and “sculpts” the surrounding dust into structures like this impressive column several dozen light-years long.
Technical details:
Telescope: Celestron Edge HD14 with a 0.7x focal reducer
Mount: Paramount MX+
Camera: ZWO ASI 2600MM
Filters Baader RGB and ultra-narrowband filters (3.5nm)
Exposures: 55 x 2 minutes with RGB filters and 51 poses x 10 minutes with SII filter (assigned to red channel), H-alpha (assigned to green channel) and Oxygen III (assigned to blue channel)
