Dark Nebula between Cave and Bubble ( Yuichi Kawamoto )

Celestial hemisphere: Northern · Constellation: Cepheus (Cep) · Contains: Bubble nebula · NGC 7538 · NGC 7635

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Dark Nebula between Cave and Bubble

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Dark Nebula between Cave and Bubble

Imaging Telescopes Or Lenses: Borg 55FL · Borg 67FL
Imaging Cameras: QHYCCD QHY16200A · QHYCCD IC8300
Mounts: CEM60
Filters: G · R · B · Lum
Accessories: BORG Reducer 0.8x DGQ55 [7880] · Borg 7108
Software: Photoshop CC · PixInsight 1.8
Guiding Telescopes Or Lenses: Takahashi GT-40
Guiding Cameras: QHYCCD QHY5L-II M

Dates:: Aug. 17, 2018
Frames:: B: 5×300″(25′) bin 1×1
G: 9×300″(45′) bin 1×1
Lum: 43×300″(3h 35′) -20°C bin 1×1
R: 14×300″(1h 10′) bin 1×1
Integration:: 5h 55′
Darks:: 10
Flats:: 15
Bias:: 50
Avg. Moon age:: 6.59 days
Avg. Moon phase:: 41.58%

Basic astrometry details

Astrometry.net job: 2241768

RA center: 23h04m52s.3

DEC center: +62°38′34″

Pixel scale: 3.628 arcsec/pixel

Orientation: 2.268 degrees

Field radius: 2.903 degrees

Resolution: 1556x1244

File size: 1.8 MB

Locations: Hanadate Nature Park, Hitachi Ohmiya City, Ibaraki, Japan

Data source: Traveller

Acquisition details:

L Images: Borg 67FL+7108 Flattener, f=324mm, F4.8

QHYCCD QHY16200A Cooled monochrome CCD camera, -20 degrees

300sec x 43 frames

RGB Images: Borg 55FL+7880 reducer, f=200mm F3.5

QHYCCD IC8300 Cooled monochrome CCD camera, -20 degrees

R: 300sec x 14 frames

G: 300sec x 9 frames

B: 300sec x 5 frames

Original
B
Final
C

Please note: The following tables are updated every 24 hours.

Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

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.
Promotions by Submitters When 3 distinct Submitters promote the image, it moves on to the next stage of the process: evaluation for Top Pick status. This requirement, in addition to anonymization of images and distribution to only a subset of them, prevents biases and ensures that the best images are selected.
Promotions by Reviewers When 3 distinct Reviewers promote the image, it moves on to the next stage of the process: evaluation for IOTD status.
Dismissals 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	2241768
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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Contribution Index (beta):

Dark Nebula between Cave and Bubble

Dark Nebula between Cave and Bubble

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Image Index:

Contribution Index (beta):

Dark Nebula between Cave and Bubble

Dark Nebula between Cave and Bubble

Equipment

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Description

Comments

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