NGC 5866 (M102) (Torben van Hees)

NGC 5866 (M102)

NGC5866 is a lenticular (or maybe spiral) galaxy seen almost exactly edge-on. It has, in the past and around its discovery, been mislabeled numerous times. It is still not certain if this object really is what Messier meant as he put it into his catalogue as M102: A galaxy discovered by Méchain in 1781. Méchain's original location had a typo giving a 40-degree area in the sky. He later wrote it off as a double entry of M101. William Herschel described it independently in 1788, and John Herschel misrepresented the "H" catalogue number. If you correct Méchain's typo, M102 is very probably NGC 5866, as it conforms to Herschel's description and is the brighter object in this part of the sky.

When I saw the first few images of M102, I found it very similar to M104, and I was quite surprised when I discovered the rather luminous halo around the central bulge. It was not easy to make both the dust band and the halo visible, and it would have benefitted from more data - which is difficult to get here withou astronomical night currently.

I am very satisfied with how the CFF RC performs. I still have some slight fine-tuning to do for the corrector distance, but I am at 1.8" FWHM at the center, and 2.1" at the corners (where I can still see an elongation of the stars), both way better than any of my previous instruments. The additional spikes are from the secondary heater, whose cable I need to attach properly. I am waiting for a 3D-printed holder for that.

Original
F
H
Final
I

F

Description: better processing (NXT, slight BXT, GHS, more care)

Uploaded: ...

H

Description: slight color adjustment

Uploaded: ...

I

Description: crop - better color calibration

Uploaded: ...

AstroBin Platform open discussions community forum
Imaged with Voyager
Cloudy Nights
Suburban Astrophotography
Astrophotography Germany

Galaxies

	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

	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 success
Started	...
Astrometry.net job	7993710
PixInsight job	4F4TEXX1ASI3TA71X2397ME8Y71M8JFN
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	15h06m29s.785
RA (top/left)	15h07m12s.250
RA (top/right)	15h06m21s.433
RA (bottom/right)	15h05m47s.475
RA (bottom/left)	15h06m38s.720

Dec (center)	+55°45′46″.79
Dec (top/left)	+55°44′34″.52
Dec (top/right)	+55°51′44″.30
Dec (bottom/right)	+55°46′58″.16
Dec (bottom/left)	+55°39′49″.43

Image Index:

Contribution Index (beta):

NGC 5866 (M102)

NGC 5866 (M102)

Equipment

Acquisition details

Description

Comments

Revisions

F

H

I

Sky plot

Histogram

In these public groups

In these collections

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

NGC 5866 (M102)

NGC 5866 (M102)

Equipment

Acquisition details

Description

Comments

Revisions

F

H

I

Sky plot

Histogram

In these public groups

In these collections

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