NGC 7023 - Iris Nebula

NGC 7023

MouseOver for object identification, Click on image for a zoomable version

Location / Date

Zellerndorf, June, July & August 2013

Telescope / Mount / Guiding

ASA 10" Astrograph, ASA 3" Wynne Corrector
ASA DDM60, no Guiding

Camera / Exposure

Canon EOS 6D not modified

40 x 15min ISO 200
34 x 10min ISO400 (total 15h 40min)


Theli, Fitswork, PixInsight, Photoshop


The Iris Nebula, also NGC 7023, is a bright reflection nebula 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 and 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.

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