Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  NGC 7762  ·  NGC 7822
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Sh2-171 in HOO, David Elmore
Sh2-171 in HOO
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Sh2-171 in HOO

Getting plate-solving status, please wait...
Sh2-171 in HOO, David Elmore
Sh2-171 in HOO
Powered byPixInsight

Sh2-171 in HOO

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Description

Sh2-171 is an expanding HII region. UV light from stars in the nebula ionize Hydrogen that emits H-alpha as it steps through excited energy levels. Some teal colored emission from ionized oxygen is enough to tint the red of the hydrogen emission to produce the lighter colored areas of the nebula.

Two nights. H-alpha 25 exposures 10/11 June, OIII 24 exposures 11/12 June.

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Sh2-171 in HOO, David Elmore