NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa. (astroeyes)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: NGC 3786 · NGC 3788

NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa., astroeyes

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NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa.

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NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa.

Arp 294 is an interacting pair of galaxies about 135 million light-years distant

in Ursa Major. There appears to be a galactic collision about to happen. The

northern galaxy, NGC 3788, has a very faint, long filament that is heading off

North and is typical of tidal interaction. The lower galaxy, NGC 3786, has two

rather unusual filaments, not easy to characterise but probably tidally created.

Looks almost like a 'ring' galaxy. Arp's comment on the pair was simply;

"Peculiar filaments." NGC 3786 is classified as (R')SAB(r)a pec and has an

active nucleus that appears to be a Seyfert 1. NGC 3788 is classed as SAB(rs)ab

pec. Both are around 13th mag. faint and very small.

The small galaxy just below NGC 3786 is around 460 million light-years away. The

little edge-on galaxy east of NGC 3788 is about 780 million light-years distant.

Some of the faint galaxies and quasars visible in the image are exrtremely remote

- one quasar is estimated to be 10.3 BLy distant and some of the galaxies are over 2.5BLy away.

As you can see I had a problem this session with not very good stars. It may be

a bit of off-collimation but actually I think it's where the camera is not

perfectly square to the optical axis in the eyepiece tube. I do sometimes get

this problem but it's not easy to detect until looking at the images the next

day, when it's too late to do anything about it! Bit distracting but it's still an

interesting image, I think. Does anyone have any suggestions how I can get

around this problem, please? The camera's held in the eyepiece tube by 2 grub

screws - not really the most stable way of doing it.

40 X 2 minute exposures in the freezing cold, that's enough for me in one night.

Original
B
Final
C

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	Distinct awarded users	Total awarded images
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	Image of the day	Top pick	Top pick nominations	Total submitted
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	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	Basic success
Started	...
Astrometry.net job	843391
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa.

NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa.

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Image Index:

Contribution Index (beta):

NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa.

NGC 3788 - Arp 294 - Interacting Galaxy Pair in UMa.

Equipment

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