Ic59 & Ic63- la nébuleuse du fantôme et sa traîne (Matthieu TEQUI)

Celestial hemisphere: Northern · Constellation: Cassiopeia (Cas) · Contains: 27 gam Cas · IC 59 · IC 63 · LBN 620 · LBN 622 · LBN 623 · LBN 625 · Sh2-185 · The star Navi (γCas) · gamma Cas nebula

Powered byPixInsight

Ic59 & Ic63- la nébuleuse du fantôme et sa traîne

Ha:100x300sec
OIII:80x300sec

version HOO de la nébuleuse du fantôme.
Située dans la constellation de cassiopée près de gamma cassiopeiae, Ic59 (queue du fantôme) se situe à à environ 600 années lumière de Ic63 (tête du fantôme).
L'objectif de cette photo à cette focale (281mm) était de mettre en évidence la grande traînée qui accompagne Ic 59 et 63.
2 amas sont également présent dans cette image:ngc 433 et ngc 381

traitement:
La difficulté réside dans différentes choses dans cette image:
-la gestion du halo prononcée (surtout la couche OIII) de Navi (γ Cas), la grosse étoile centrale dans la constellation de Cassiopée.
-la quantité très importante d'étoiles dans cette région qui rend difficile la mise en évidence de la nébuleuse.
La montée d'histogramme joue donc un rôle important dans cette image et il faut y prêter une attention tout à fait particulière
-et enfin, la faiblesse de signal de la couche OIII (voir stack Ha et OIII avec juste une STF)

J'ai essayé d'avoir un rendu assez naturel pour du HOO avec un mixage pixelmath en non linéaire (après un linearfit et même montée d'histogramme pour les 2 couches en 3 passes)
R->H
G->((O*H)^~(O*H))*H+~((O*H)^~(O*H))*O
B->O

Associé à ma luminance composée exclusivement de la couche H, voila le résultat final.
En espérant qu'elle vous plaise!

Original
F
Final
G

G

Description: crop

Uploaded: ...

Sharpless2 Objects

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	4841656
PixInsight job	FDS74E8AK6JK9WF2Q2WK7EAF2HJZ4I86
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h58m38s.75
RA (top/left)	00h54m19s.30
RA (top/right)	00h54m33s.68
RA (bottom/right)	01h02m51s.57
RA (bottom/left)	01h02m50s.99

Dec (center)	+60°59′49″.5
Dec (top/left)	+61°25′22″.8
Dec (top/right)	+60°32′44″.0
Dec (bottom/right)	+60°33′44″.6
Dec (bottom/left)	+61°26′25″.7

Image Index:

Contribution Index (beta):

Ic59 & Ic63- la nébuleuse du fantôme et sa traîne

Equipment

Acquisition details

Description

Comments

Revisions

G

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

Ic59 & Ic63- la nébuleuse du fantôme et sa traîne

Equipment

Acquisition details

Description

Comments

Revisions

G

Sky plot

Histogram

In these public groups

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