NGC7023 Iris Nebula
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.
|Bortle Scale / SQM-L||Bortle 4/5 / --|
|Primary Scope||FSQ106 106/530|
|Total Exposure Time||6H|
|Location||Val Imagna (Bergamo) Italy|
© Efrem Frigeni Astrophoto