IC5070 Pelican Nebula in narrowband

A star forming region I often image for the HOYS project. Bright moonlight but narrowband keeps most of it out of the image.

 

The Pelican is much studied because it has a particularly active mix of star formation and evolving gas clouds. The light from young energetic stars is slowly transforming cold gas to hot and causing an ionization front gradually to advance outward. Particularly dense filaments of cold gas are seen to still remain, and among these are found two jets emitted from the Herbig–Haro object 555

 

Herbig–Haro (HH) objects are bright patches of nebulosity associated with newborn stars. They are formed when narrow jets of partially ionised gas ejected by stars collide with nearby clouds of gas and dust at several hundred kilometres per second.

Wikipedia

 

HH objects last for relatively short timeframes - thousands of years, so can actually change appearance.

 

2021-11-20

250mm f4.8 Newtonian, MPCC

QHY168C @-15°C

Altair Astro Tri-band filter

30x300s

darks, flats, bias

Captured in NINA

Processed in APP, Photoshop

Done