IC 1396B in the constellation Cepheus imaged in the red light from hydrogen atoms. These images were obtained as part of the
INT/WFC Photometric Hydrogen-Alpha Survey of the Northern Galactic Plane (IPHAS).
Date of photograph: 2005.
http://www.ing.iac.es/PR/science/ic1396.jpg
Description: NGC6992, part of the Cygnus Loop. The Cygnus Loop is the remnant of a type II supernova. For a few days the supernova emitted as much energy as a whole galaxy. When it was all over, a large fraction of the star was blown into space as a supernova remnant, which it's typical at most few light-years across.
Date: 2009.
Credit: Daniel López (IAC).
Technical information:
This image is part of the Eastern Veil Nebula, or NGC 6992, and it was obtained using the Wide Field Camera on the Isaac Newton Telescope. It is a three-colour composite made from data collected using filters to isolate the light emitted by hydrogen alpha (H-alpha), doubly ionised oxygen (OIII) and ionised sulfur (SII) atoms, and coded in the image as red, green and blue respectively.
http://www.ing.iac.es/PR/press/VeloHaSIIOIIIDLopez.jpg
Description: M78 Nebula.
Date: 2014.
Credits: Alexis Smith.
Technical information:
This image was obtained through the filters Harris R, Harris V and Harris B to match red, green and blue respectively. Each exposure time was 180 seconds.
http://www.ing.iac.es/PR/science/m78.jpg