Iris Nebula

21. Iris Nebula


NGC 7023  RA: 21h 00.5'  Dec: +68 10'   Cepheus (Cep)

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The Iris Nebula, also known as NGC 7023 and Caldwell 4, is a bright reflection nebula and Caldwell object in the constellation Cepheus. NGC 7023 is actually the cluster within the nebula, LBN 487, and the nebula is lit by a magnitude +7 star, SAO 19158. It shines at magnitude +6.8. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alphirk). It lies 1,300 light-years away and is six light-years across.
 

Image Information

Location Black Forest SP
Date Sept 9 2015
Optics Orion 12 IM
Filters Baader MPCC
Mount Celestron CGE
Camera Canon/Hutech 500DH
ISO 800
Subexposures 13
Exposure Length 300
Guider KwikGuider
 

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All images copyright © 2006-2020, Rick Saunders
Main text descriptions sourced from Wikipaedia.
Sky position information is based on IP geolocation and is therefore approximate.