Central part of Musca constellation in HaRGB and Ha only (Alexandr Zaytsev)

Central part of Musca constellation in HaRGB and Ha only

Link: https://coalsack.online/chilescope/Mus_2023Q2/Mus_T4_9x600s_35x60s_HaRGB_d4a_at.jpg

2h 5min integral HaRGB exposure of the central part of Mus constellation featuring the Dark Doodad Nebula (Sandqvist 149) and numerous globular clusters and dark nebulae - captured remotely using Telescope #4 (Nikkor 200mm f/2, FLI Microline 16200) system of ChileScope observatory, also known as VST - a Very Small Telescope)) during two imaging sessions carried out on May 14 and 15, 2023.

Two most beautiful sub-regions of this images are the surroundings of Collinder 261 open cluster (given below at 100% of original resolution; also shown in revision E in Ha only):

and the area occupied by Dark Doodad Nebula and NGC 4372 globular cluster shown under revision D.

A narrower angle view of a sub-region around Alpha and Beta Mus along with Collinder 261 open cluster of this image in RGB obtained with Chilescope T5 and T3 instruments are available under [1] and [2]:

[1] https://www.astrobin.com/t0791e/

[2] https://www.astrobin.com/33nivl/

B

Title: Same scene in Ha only

Description: (1h 30min integral exposure in Ha)

Uploaded: ...

C

Title: Annotated version of Ha only exposure with minimum corrections applied

Description: (Performed with PixInsight tools)

Uploaded: ...

D

Title: Separately processed subframe of the original image for the Dark Doodad Nebula and NGC 4372 globular cluster area

Description: (35min integral exposure in RGB)

Uploaded: ...

E

Title: High contrast processing for a subframe of Ha only version of the image for the vicinity of Collinder 261 open cluster

Description: (1h 30min integral exposure in Ha)

Uploaded: ...

F

Title: Original version of the image with an overlay showing the narrower FOV image obtained earlier with T5 Chilescope instrument [3]

Description: [3] https://www.astrobin.com/t0791e/

Uploaded: ...

H

Title: WISE WSSA 12um survey data for the area, annotating several features visible in Ha image (revision B)

Description: WISE Diffuse dust 12 mkm WSSA data [3] visualized using Aladin Sky Atlas software [4] mapped to the Red channel.

[3] https://arxiv.org/abs/1312.0947

[4] https://aladin.cds.unistra.fr/

Uploaded: ...

I

Title: WISE WSSA 12um survey data for the area

Uploaded: ...

J

Title: WISE WSSA 12um survey data for the area with Ha image overlay (revision B)

Uploaded: ...

K

Title: WISE WSSA 12um survey data for the area, annotating several features visible in the Ha image (revision B) placed as an overlay

Uploaded: ...

Processed with Photoshop
Camera Lens Astrophotography
Objects of the South - negative declination only
Dark Nebula
FLI Microline images
Edit with Mouseover
Open Star Clusters
Globular Star Clusters
PixInsight Addicts
Southern Hemisphere Astro
Astroimaging from Chile

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	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
Artificial satellite

	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

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 failed
Started	...
PixInsight job	H5Q508EJIWR0GD41KZMWWWXWOSOW0SP7
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

AstroBin

AstroBin

Image Index:

Contribution Index (beta):