North American Nebula-True Blue (Debra Ceravolo)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: HD199511 · HD199547 · HD199870 · HD199939 · HD199956 · HD200060 · HD200311 · HD200407 · LBN 354 · LBN 373 · LDN 935 · NGC 7000 · North America Nebula · Sh2-117

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North American Nebula-True Blue

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North American Nebula-True Blue

Where is all that blue coming from? Typically, the North American Nebula is presented showing a lot of deep pinks and red colours. I used three narrowband filters, hydrogen-alpha, OIII, and hydrogen beta and assigned the colours according to their spectral wavelengths. Thanks to Tim Hutchison for developing the pixel math formula to allow me to do this in Pixinsight! Generally speaking, hydrogen-beta emits in the blue end of the spectrum and OIII is emitting a green blue colour. Hydrogen-alpha of course is a deep red. These are the real colours of ngc 7000 presented by isolating these three emissions. Broadband RGB stars have been added in after removing the narrowband stars. My new goal is to do a large mosaic of this whole region in Cygnus using this technique.
Ha: OIII: Hb: R: G: B: 5.8: 5.8: 5.8: 2: 2: 2 hours each

Women Astrophotographers

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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
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Star trails
Northern lights
Noctilucent clouds
Landscape

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.
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	Advanced success
Started	...
Astrometry.net job	6150048
PixInsight job	U5WG5PLQ3NJN3XJHHCSTZ7JR33IH1DSG
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h59m48s.32
RA (top/left)	21h03m37s.26
RA (top/right)	20h56m01s.60
RA (bottom/right)	20h56m04s.81
RA (bottom/left)	21h03m30s.27

Dec (center)	+43°54′55″.10
Dec (top/left)	+44°36′53″.2
Dec (top/right)	+44°37′10″.4
Dec (bottom/right)	+43°12′27″.7
Dec (bottom/left)	+43°12′07″.7

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North American Nebula-True Blue

North American Nebula-True Blue

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Image Index:

Contribution Index (beta):

North American Nebula-True Blue

North American Nebula-True Blue

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

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