The Iris Nebula & The Ghost Nebula (Serkan Boydağ)

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

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The Iris Nebula & The Ghost Nebula

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The Iris Nebula & The Ghost Nebula

Re-processed: The Iris Nebula & The Ghost Nebula (Sh2-136, VdB 141) and IFN (Integrated Flux Nebula)
August 2019 Melikler /Isparta
The Iris Nebula, also known as 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.
The Ghost Nebula (Sh2-136, VdB 141) is a reflection nebula located in the constellation Cepheus.
It lies near the cluster NGC 7023. Looking at the adjacent image, the nebula's name is easily understood. The Ghost Nebula is referred to as a globule (cataloged CB230) and over 2 light-years across. There are several stars embedded, whose emissions make the nebula shine in brownish colour.
Credit: Wikipedia
Lum: 60x180 sec
Red: 39x180 sec
Greeen: 31x180 sec
Blue: 30x180 sec
LRGB image total integration: 8 hours
ZWO ASI 1600 MM Pro
Canon EF 200 mm f2.8 L II
Celestron AVX (without guiding)
SharpCap 3.1 (Polar align & Capture)
Pix Insight 1.8.9 2
Photoshop CC

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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.

Submitted The date and time when you submitted this image for IOTD/TP consideration.	...
Views by Submitters (available since September 19th, 2023) Every image is assigned to 50% of available Submitters. In the event that at least 80% of them don't view the image before its time in the IOTD/TP process expires, it's assigned to the other 50% of Submitters and the process begins anew.
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Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Early dismissal Staff members have a lot of images to inspect on a daily basis, and they can dismiss images if they believe they don't meet the requirements for IOTD/TP selection. If an image is dismissed 5 times, it's removed from the process. This streamlines the process and ensures that any bias present in promotions could be overruled by other staff members.

Status	Basic success
Started	...
Astrometry.net job	9656488
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The Iris Nebula & The Ghost Nebula

The Iris Nebula & The Ghost Nebula

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The Iris Nebula & The Ghost Nebula

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