NGC 3587, M97, Owl Nebula (SHO & HOO) (AnaTa)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: M 97 · NGC 3587 · Owl Nebula · PK148+57.1

Powered byPixInsight

NGC 3587, M97, Owl Nebula (SHO & HOO)

Powered byPixInsight

NGC 3587, M97, Owl Nebula (SHO & HOO)

Main image is HOO. S2 was very weak.
Image was cropped twice.

Processing:
RGB are combined.
Cropping for Ha, S2, O3 and RGB
DBE for Ha, S2, O3 and RGB
Color Colib for RGB
Blur and Noise XT for Ha, S2, O3 and RGB
Manual stretching (with HT) for Ha, S2, O3 and RGB
Star XT for RGB. These stars were saved for processing.

Combined S2-red, Ha-green, O3-blue (SHO)
Combined Ha-red, O3-green, O3-blue (HOO)
Noise XT again for HOO and SHO
Stretching again for HOO and SHO
Star XT. These stars have been discarded.

Simple Lum mask for HOO and SHO
Local Histogram Equalization: Kernel radius of 40 and then 100
Multiscale-median transform for sharpness.
Curves: saturation and brightness are manipulated in SHO and HOO (nightmare process! and totally subjective).
Mask off.
Saturated stars are added to HOO and SHO.
Done

Final
Original
B
C

B

Title: SHO version

Uploaded: ...

C

Title: LRGB annotation

Description: This image is not cropped.

Uploaded: ...

Messier Objects

Nebulas (Planetary)

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	7962558
PixInsight job	XADNL82BM68QWMUKN0R7F34S27Z9BG37
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	11h14m47s.535
RA (top/left)	11h15m32s.124
RA (top/right)	11h15m32s.420
RA (bottom/right)	11h14m02s.662
RA (bottom/left)	11h14m03s.288

Dec (center)	+55°01′08″.56
Dec (top/left)	+54°54′46″.60
Dec (top/right)	+55°07′32″.52
Dec (bottom/right)	+55°07′29″.97
Dec (bottom/left)	+54°54′43″.80

Image Index:

Contribution Index (beta):

NGC 3587, M97, Owl Nebula (SHO & HOO)

NGC 3587, M97, Owl Nebula (SHO & HOO)

Equipment

Acquisition details

Description

Comments

Revisions

B

C

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

NGC 3587, M97, Owl Nebula (SHO & HOO)

NGC 3587, M97, Owl Nebula (SHO & HOO)

Equipment

Acquisition details

Description

Comments

Revisions

B

C

Sky plot

Histogram

In these public groups

In these collections

Notifications

AstroBin is in READ ONLY mode

Sorry :-(

Sorry :-(

Sorry :-(

Are you really sure?

Warning!

Warning!

Are you sure?

Report abuse

Slideshow settings

IOTD/TP stats (last [x] days)

Distribution of astrophotographers

Distribution of subject types

Distribution of data sources

Sorry

Sorry

Share

Upload new revision

Upload uncompressed source (XISF/FITS/PSD/TIFF)

Delete image and all its revisions?

Delete original image?

Delete all other versions?

Delete all revisions?

Delete this revision?

Delete this revision?

IOTD/TP stats

The following people like this image

The following people bookmarked this image

Warning

Flag malfunctioning thumbnails

Contains

Remove yourself as a collaborator

Plate-solving information