M94 Galaxy ( Jean-Baptiste Auroux )

Image of the day 11/18/2020

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M94 Galaxy

Link: https://millenniumphoton.com/portfolios/galaxie-m94/

Imaging Telescopes Or Lenses: Takahashi TSA 102
Imaging Cameras: Atik One 6.0 Mono
Mounts: Sky-Watcher AZ-EQ6 GT
Filters: Astronomik R 1.25" · Astronomik G 1.25" · Astronomik B 1.25" · Astronomik L 1.25" · Astronomik Ha 6nm · Astronomik LRGB 1,25"
Accessories: Atik OAG
Software: Adobe Photoshop · Pleiades Astrophoto PixInsight · Topaz Labs Sharpen AI · Atik Artemis · PHD Guiding 2
Guiding Telescopes Or Lenses: Takahashi TSA 102
Guiding Cameras: Atik GP

Dates:: May 21, 2020 · May 23, 2020 · May 24, 2020 · May 25, 2020
Frames:: 15×180″(45′) -15°C bin 1×1
72×600″(12h) -15°C bin 1×1
40×180″(2h) -15°C bin 2×2
20×180″(1h) -15°C
Integration:: 15h 45′
Darks:: 64
Flats:: 12
Bias:: 101
Avg. Moon age:: 8.35 days
Avg. Moon phase:: 3.23%
Bortle Dark-Sky Scale:: 4.00

RA center: 12h50m53s.11

DEC center: +41°07′09″.2

Pixel scale: 1.148 arcsec/pixel

Orientation: 13.522 degrees

Field radius: 0.550 degrees

More info:Open

Resolution: 2700x2147

File size: 24.0 MB

Locations: Charente-Maritime, Charente-Maritime, Charente-Maritime, France

Data source: Backyard

I tried for the first time the "trendy" software "Topaz sharpen" for this image ; as many users do so now for their astro images.

The process was only applied on the inner core of the galaxy, and with many precautions (mask, low % of blend with the original… ) and rigorous verification that no virtual detail is created during the process. In fact, it was used more like the "sharpen" tool of PS ; which can surely leads to the same result but with many iterations…

For this image, most of the detail come from classic deconvolution and HDR processing on Pixinsight ; Topaz was only useful to quickly give a "sharpen" aspect to the core of the galaxy.

I think that used in that way, and with such precautions, it can be an interesting tool.

This image was awarded:
- IOTD (18th November 2020)
- AAPOD2 (28th November 2020)

Final
Original
B

B

Description: AAPOD² celebration ! (11/28/2020 - https://www.aapod2.com/blog/galaxy-m94).

Uploaded: ...

AAA : Astronomes et Astrographes Amateurs
Takahashi Refractors

	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

	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.
Dismissals 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	4001416
PixInsight job	GAC296J4MEOV1DRZ5VWW9DDAIUXDGEFX
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	12h50m53s.11
RA (top/left)	12h53m32s.47
RA (top/right)	12h49m04s.66
RA (bottom/right)	12h48m14s.86
RA (bottom/left)	12h52m40s.16

Dec (center)	+41°07′09″.2
Dec (top/left)	+41°20′57″.4
Dec (top/right)	+41°33′05″.4
Dec (bottom/right)	+40°53′07″.1
Dec (bottom/left)	+40°41′06″.4

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Image of the day 11/18/2020

M94 Galaxy

Image of the day 11/18/2020

M94 Galaxy

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Image Index:

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Image of the day 11/18/2020

M94 Galaxy

Image of the day 11/18/2020

M94 Galaxy

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