The Iris Nebula

a62b3fc731e5a96eb1ca8d72f6e42e67.1824x0_q100_watermark_watermark_opacity-10_watermark_position-6_watermark_text-Samuli VuorinenThe 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 theMira-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.

Imaging telescopes or lenses: Boren-Simon PowerNewt 8
Imaging cameras: Atik 460EX
Mounts: Sky-Watcher EQ-6 Pro
Guiding telescopes or lenses: Teleskop-Service Finderscope
Guiding cameras: QHYCCD QHY5
Focal reducers: ASA 2″ x 0,73 Corrector/Reducer 2KORRR
Software: PixInsight, Maxim DL, AstroTortilla
Filters: Astronomik G, Astronomik B, Astronomik R, Astronomik L
Accessories: Lunatico Astronomia Seletek Armadillo
Dates: Sept. 6, 2013
Astronomik B: 6×600″ -10C bin 1×1
Astronomik G: 6×600″ -10C bin 1×1
Astronomik L: 8×600″ -10C bin 1×1
Astronomik R: 6×600″ -10C bin 1×1
Integration: 4.3 hours
Flats: ~20
Bias: ~500

Author: Samuli Vuorinen

AstroPhotography of the day by SPONLI
3 Abril 2014