NGC55 (John Dziuba)

Celestial hemisphere: Southern · Constellation: Sculptor (Scl) · Contains: IC 1537 · NGC 55

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NGC55

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NGC55

NGC55 is a barred spiral galaxy roughly 6.5 million light years away from Earth in the constellation Sculptor. It appears asymmetrical to us because of our nearly edge-on viewpoint. It is one of the closest galaxies to our Milky Way in our local group.

There are relatively few images of this galaxy on Astrobin which is surprising given the relative close proximity and angular size. Therefore, I didn't have many reference images to use to plan my processing workflow. I experimented with many stretch combinations and settled on this one which is a fairly basic stretch. It is an LRGB image but I blended in some Ha data into the red channel to highlight the star forming nebulous regions that are present in the arms of the galaxy.

My favorite features of the image are the many visible background galaxies. Zooming in, you can find examples of many galaxy types. Some even with colored arms and sharp clarity.

The weather in Chile has been really cloudy. Obstech is supposed to have 320 clear nights per year. I have only been set up there since mid July and I recon we have had nearly a years worth of cloudy nights already! Looking at historical data, this appears to be an anomaly. But still, very frustrating.

Seeing has also been very poor this winter. I have seen it as bad a 5" and averaging about 2.5". This has definitely cost me some loss of detail in the image. But, I am pretty satisfied with it none the less. I am anxiously waiting for these famous clear and stable nights to return!

CS

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Final
J
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GHS Made a Substantial Difference
Southern Hemisphere Astro
Fine Art Astrophotography
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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
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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
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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
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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	8487570
PixInsight job	I26IEJPP9TNZ9CJJC1PV3CS41O3O9UX4
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	00h15m05s.183
RA (top/left)	00h17m03s.880
RA (top/right)	00h13m17s.978
RA (bottom/right)	00h13m06s.950
RA (bottom/left)	00h16m53s.536

Dec (center)	-39°12′43″.35
Dec (top/left)	-38°59′36″.10
Dec (top/right)	-38°56′36″.60
Dec (bottom/right)	-39°25′45″.79
Dec (bottom/left)	-39°28′44″.75

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