NGC 2685 Helix Galaxy (Arp 336) (Chris Sullivan)

Celestial hemisphere: Northern · Constellation: Ursa Major (UMa) · Contains: Helix galaxy · NGC 2685

NGC 2685 Helix Galaxy (Arp 336), Chris Sullivan

Powered byPixInsight

NGC 2685 Helix Galaxy (Arp 336)

Powered byPixInsight

NGC 2685 Helix Galaxy (Arp 336)

I only intended on giving this one 30 hours, but my test stacks were just looking terrible, so I kept adding more and more data. It did improve things, but I just don't think I can get what I was hoping for with an 8" scope under bright skies - it's really at the cusp of what I can do under this light pollution and I don't intend on doing a galaxy this dim in the future (at least from home). This was one of my toughest images and definitely my toughest broadband image to date.

One thing I do want to call your attention to is the galaxy cluster at the bottom right of the uncropped image. I tried doing a plate solve with PI and didn't get anything on them. I seriously wonder how far away those galaxies are. EDIT: Gary and Johny did the research for me and the answer is 2.5 to 3 BILLION light years away with Johny identifying two at 2.743 and 2.707 billion light years away.

Original
B
D
Final
E

B

Description: Crop

Uploaded: ...

D

Description: A little less stretching and a little more noise reduction.

Uploaded: ...

E

Description: Crop

Uploaded: ...

Northeast Imagers
Cloudy Nights
Broadband under Bortle 7/8/9
QHY Users Group
Ritchey Chretien telescopes GSO Family
Arp's Peculiar Galaxies
Suburban Astrophotography
ZWO ASI183/QHY183
Light Polluted skies

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	Basic success
Started	...
Astrometry.net job	3279574
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

NGC 2685 Helix Galaxy (Arp 336)

NGC 2685 Helix Galaxy (Arp 336)

Equipment

Acquisition details

Description

Comments

Revisions

B

D

E

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

NGC 2685 Helix Galaxy (Arp 336)

NGC 2685 Helix Galaxy (Arp 336)

Equipment

Acquisition details

Description

Comments

Revisions

B

D

E

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?

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