IC 1795 Fishhead Nebula (Greg Mason)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: IC 1795 · NGC 896

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IC 1795 Fishhead Nebula

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IC 1795 Fishhead Nebula

Fishhead in SHO. Taken from my back yard in Texas during a mostly full moon.

PixInsight Workflow:

Calibration Files Used per dataset:

Master Dark

Master Bias

Super Bias

Master Flats

Pre-Processing Light Frames per set/filter:

ImageCalibration

CosmeticCorrection

SubframeSelector (Approve add weighting to files)

StarAlignment

LocalNormalization

ImageIntegration (Generate Drizzle Data)

DrizzleIntegration

Post-Processing Light Frames per filter:

StarAlignment (register each integrated filter file to reference frame)

DynamicCrop

AutomaticBackgroundExtraction (repeated until flat)

LinearFit

TGVDenoise

MaskedStretch

ChannelCombination (SII to Red, Ha to Green, OIII to Blue)

BackgroundNeutralization

Invert Image and use SCNR to reduce Green (eliminates magenta rings around stars)

CurvesTransformation

SCNR (reduce Green)

Starnet

PixelMath to Perform Exponential Transformation on starless image.

PixelMath to Blend Starless image with RGB image.

LocalHistogramEqualization

MultiScaleLinearTransformation

CurvesTransformation to adjust saturation.

Original
Final
B

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
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	4212740
PixInsight job	1RSV2MFVK1WSK7TH4W179JQR1B4IX2PI
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	02h27m21s.340
RA (top/left)	02h22m50s.475
RA (top/right)	02h22m23s.376
RA (bottom/right)	02h31m37s.968
RA (bottom/left)	02h32m32s.899

Dec (center)	+62°00′27″.65
Dec (top/left)	+62°47′05″.10
Dec (top/right)	+61°16′46″.90
Dec (bottom/right)	+61°13′21″.12
Dec (bottom/left)	+62°43′26″.62

Image Index:

Contribution Index (beta):

IC 1795 Fishhead Nebula

IC 1795 Fishhead Nebula

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Description

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Sky plot

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Image Index:

Contribution Index (beta):

IC 1795 Fishhead Nebula

IC 1795 Fishhead Nebula

Equipment

Acquisition details

Description

Comments

Revisions

Sky plot

Histogram

Notifications

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