Celestial hemisphere:  Northern  ·  Constellation: Cepheus (Cep)  ·  Contains:  HD200775  ·  Iris Nebula  ·  LBN 475  ·  LBN 487  ·  LDN 1167  ·  LDN 1168  ·  LDN 1170  ·  LDN 1172  ·  LDN 1173  ·  LDN 1174  ·  NGC 7023  ·  T Cep
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Iris Nebula (NGC 7023) - RGB, Jon Gascoyne
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Iris Nebula (NGC 7023) - RGB

Getting plate-solving status, please wait...
Iris Nebula (NGC 7023) - RGB, Jon Gascoyne
Powered byPixInsight

Iris Nebula (NGC 7023) - RGB

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Description

The Iris Nebula (also known as NGC 7023 and Caldwell 4) is a bright reflection nebula in the constellation Cepheus. The nebula, which shines at magnitude +6.8, is illuminated by a magnitude +7.4 star designated HD 200775. It is located near the Mira-type variable star T Cephei, and near the bright magnitude +3.23 variable star Beta Cephei (Alfirk). It lies 1,300 light-years away and is six light-years across. Source: Wikipedia

Data acquired by @Terry Hancock. System 1, Grand Mesa Observatory (GMO), CO, USA. Available via subscription with GMO.

Acquisition (13/09/21 - 25/10/21):

95 x 120 sec RED (bin x2)
87 x 120 sec GREEN (bin x2)
91 x 120 sec BLUE (bin x2)

Total integration: 9 hrs 6 min

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Iris Nebula (NGC 7023) - RGB, Jon Gascoyne