Iris Nebula in Cepheus (Rudolf Bumm)

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: NGC 7023

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Iris Nebula in Cepheus

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Iris Nebula in Cepheus

The Iris Nebula, also 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. (wikipedia)

RGB image with the 8' ASA astrograph of Sternwarte Mirasteilas (1288m, Falera, Switzerland) and the ZWO ASI1600mmc. Unfortunately, I overexposed (180 s subs) 2 h of luminance data during the session which I will have to reapeat and maybe add later. Still love this one.

RGB 20 x 180 sec each

Gain 0 offs 21.

auto captured with Sequence Generator Pro

all processing: Pixinsight 1.8. HDR and Deconvolution for core and nebula details. No DBE.

Darks, Flats.

Mirasteilas Observatory, Falera, Switzerland
ZWO ASI1600MM/QHY163M

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The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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