NGC884 / NGC869 - Double Cluster in RGB (David Payne)

Celestial hemisphere: Northern · Constellation: Perseus (Per) · Contains: NGC 869 · NGC 884 · The star 7Per · chi Persei Cluster · h Persei Cluster

NGC884 / NGC869 - Double Cluster in RGB, David Payne

Powered byPixInsight

NGC884 / NGC869 - Double Cluster in RGB

Powered byPixInsight

NGC884 / NGC869 - Double Cluster in RGB

NGC884 and NGC869 Double Cluster in Perseus - October 2021
Televue127is, ASI2600MC, A-P1100 AE Mount
IDAS LPS-2 Filter, Gain=0, B1x1
36*270s exposures - 2.7hrs
Pixinsight processed with Generalized Hyperbolic Stretching Script (part of testing parameter variation).

Stretching was done using a new Pixinsight script developed by Mike Cranfield (still in development). Took a different approach on stretching, making different compromises than in the NGC7789 images - generally less star protection in this image. Also employed 2 logarithmic stretches initially on extracted lum, then stretched the colour channels (by stretched lum/unstretched lum) using Pixelmath. This enhances star colour in the same manner as the arcsinh stretch. Again, only moderate noise reduction applied with minor saturation adjustment.

Both star clusters are very young <13 million years, containing mainly white/blue stars, creating a bright part of the Milky Way. Which cluster is which - I'll have to check the Astrobin plate-solve! They are about 7000 light-years away and but only a few hundred light years apart. Both are also blue-shifted (coming towards us).

Original
Final
B

B

Description: Reduced Background - (uploaded incorrect file)

Uploaded: ...

AstroBin Platform open discussions community forum
N.I.N.A. Users

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 failed
Started	...
Astrometry.net job	5189136
PixInsight job	NYEHNGQNTQ44GVXEI9GE1A12PGQNSSH9
PixInsight queue size	n/a
PixInsight stage	PLATE_SOLVING_IMAGE

Image Index:

Contribution Index (beta):

NGC884 / NGC869 - Double Cluster in RGB

NGC884 / NGC869 - Double Cluster in RGB

Equipment

Acquisition details

Description

Comments

Revisions

B

Sky plot

Histogram

In these public groups

Image Index:

Contribution Index (beta):

NGC884 / NGC869 - Double Cluster in RGB

NGC884 / NGC869 - Double Cluster in RGB

Equipment

Acquisition details

Description

Comments

Revisions

B

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?

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