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Robert Chozick | all galleries >> Galleries >> Deep Sky Images > Iris Nebula - NGC 7023
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Septemer 8-9. 2021

Iris Nebula - NGC 7023

Paducah Skies Observatory

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)

Paducah Skies Observatory is a private observatory SW of Paducah, TX. It sits on 45 acres of native Texas grasslands and mesquite trees. The skies are 21.99 on the light pollution scale (almost Bortle 1).

Astro-Tech AT8RC Carbon Fiber Ritchey-Chretien
Astro Physics CCDT67 Telecompressor at f/5.3 1075mm
ZWO ASI2600MC Pro CMOS One Shot Color Camera
Baader Vario Finder mounted as Guidescope
ZWO ASI178MM Guide Camara
Astro Physics 900 GTO mount

75 exposures 5 minutes (100 gain/20 offset) each
12 exposures 1 minute (100 gain/20 offset) each

Guided with PHD-2
Captured with The Sky X
Pre-processed and Stacked in Nebulosity 4
Post Processed in Pixinsight and Photoshop full exif


other sizes: small medium large original auto