Astral Imaging at Dogwood Ridge Observatory

Latitude: 37°48'51.0" N"
Longitude:78°23'41.0"W
Scottsville, Virginia 24590

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Quoted from Wikipedia, the free encyclopedia:

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.[1] 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.[2]

Notes[edit]

References[edit]

• Pasachoff, Jay M. (2000). "Atlas of the Sky". Stars and Planets. New York, New York: Peterson Field Guides. pp. 578 pg. ISBN 0-395-93432-X. 
• Caldwell-Moore, Sir Patrick (2003). Firefly Atlas of the Universe. Firefly Books Limited. ISBN 1-55297-819-2. 

External links[edit]

Wikimedia Commons has media related to NGC 7023.

• SEDS – NGC 7023
• Simbad – NGC 7023
• VizieR – NGC 7023
• NED – NGC 7023
• Dark Atmospheres Photography – Iris Nebula NGC 7023
• See NGC 7023 in WorldWide Telescope
• Iris Nebula on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

This image consists of 19 red, 20 green, and 19 blue RGB images all taken at -15°C at bin 2x2 for 15 minutes each. A total of 13 luminance images binned 1x1 each 15 minutes long taken at -15°C were used. A total of 17.75 hours LRGB data used. All data was acquired using MaxImDl/CCD version 5.24 using ACP7.1.  Pix Insight version 1.8.02.1098 was used for processing. Dithered guiding was on.