The main structure shown in this image is known as the Elephant’s Trunk Nebula, IC 1396, an amazing 20 light-years long emission nebulae.
This image shows the Hα, [OIII] and [SII] emissions combined using the Hubble Palette composition. This inter5national color convention highlights the emissions from this nebula in different colors as it follows: the sulfur data is assigned to the red channel, the hydrogen data to the green channel and the oxygen data to the blue channel.
Broadband filters have been used to give the stars its natural color.
All images at 120Gain -15ºC bin2
Calibrated with 50 flats, 50 darks, 50 bias
Total exposure: 9h01′
Average darkness: 21 mag/arcsec2
Image resolution: 2.12”/pixel
ASI294MM Pro camera with ZWO EFW 8 pos
Guiding with ASI174MC and ZWO OAG
SGP, PHD2, APP, PIX, LR, PS, TPZ.
Aleix Roig, July 2021.
Prades (Tarragona, Catalonia – Spain).
This image has been selected as a top pick image on Astrobin: