NGC 6633 (Samuel Kohler)

Celestial hemisphere: Northern · Constellation: Ophiuchus (Oph) · Contains: NGC 6633 · PGC 1290575 · PGC 1314484 · PGC 1326202 · PGC 1328417 · PGC 166900 · PGC 202447 · PGC 202449 · PGC 202463 · PGC 202465 · PGC 202466 · PGC 202469 · PGC 202471 · PGC 202472 · PGC 202480 · PGC 202490 · PGC 202496 · PGC 202498 · PGC 202499 · PGC 202502 · PGC 202504 · PGC 202511 · PGC 202513 · PGC 202516 · PGC 202518 · PGC 202519 · PGC 202521 · PGC 202526 · PGC 202529 · PGC 202530 · And 17 more.

Powered byPixInsight

NGC 6633

Powered byPixInsight

NGC 6633

While snow is still falling, today I found time to process the data of this pretty open cluster I captured back in September: Discovered by Mr. William Herschel's sister Caroline Herschel in 1783, this cluster near the constellation Serpens spans a with of approximately eight light years. Coalescence of stars or mass transfer between them is assumed to a possible reason for their bright blue luminosity.

NGC6633, Tweedledum Cluster

09/05/2023, 9.30pm, 47° N, 3130 ft, wind moderate, temperature 17°C, dewpoint 14°C, humidity 88%
lights 49x 90sec, filter: HEUIB-II (33 flats, 33 flatdarks, 50 darks)

09/19/2023, 8.45pm, 47° N, 3130 ft, wind calm, temperature 15°C, dewpoint 12°C, humidity 87%
lights 15x 90sec, filter: HEUIB-II (33 flats, 33 flatdarks, 50 darks)

09/24/2023, 8.30pm, 47° N, 3130 ft, wind calm, temperature 9°C, dewpoint 6°C, humidity 81%
lights 26x 90sec, filter: HEUIB-II (33 flats, 33 flatdarks, 50 darks)

09/25/2023, 9.00pm, 47° N, 3130 ft, wind calm, temperature 10°C, dewpoint 8°C, humidity 86%
lights 64x 90sec, filter: HEUIB-II (33 flats, 33 flatdarks, 50 darks)

integration: 3h 51min 00sec
sensor: SONY Exmor IMX183CLK-J/CQJ-J (ASI183MC)
lens: FRA400, f/3.9 at 280mm
mount: EQ6-R Pro
guiding: AR0130CS (ASI120MM) & OAG
preprocess: Pleiades Astrophoto, PixInsight
postprocess: Pleiades Astrophoto, PixInsight

Open Star Clusters

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	Advanced success
Started	...
Astrometry.net job	8770402
PixInsight job	2EI9OZ7UM2NDIOUUY2S7UZRF4GKJ21ZE
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	18h27m15s.41
RA (top/left)	18h25m04s.50
RA (top/right)	18h22m49s.90
RA (bottom/right)	18h29m25s.95
RA (bottom/left)	18h31m42s.57

Dec (center)	+06°27′18″.7
Dec (top/left)	+07°52′41″.9
Dec (top/right)	+05°24′22″.3
Dec (bottom/right)	+05°01′57″.7
Dec (bottom/left)	+07°30′06″.9

Image Index:

Contribution Index (beta):

NGC 6633

NGC 6633

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

In these public groups

		...
You have no new notifications.

Image Index:

Contribution Index (beta):

NGC 6633

NGC 6633

Equipment

Acquisition details

Description

Comments

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?

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