RCW 89: Cloud upon Cloud (Alex Woronow)

Celestial hemisphere: Southern · Constellation: Circinus (Cir)

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RCW 89: Cloud upon Cloud

Powered byPixInsight

RCW 89: Cloud upon Cloud

RCW 89: Cloud upon Cloud

OTA: CDK 24
Camera: Moravian 61000
Observatory: Heaven's Mirror
Date of Capture: Mar 24
Date of Processing: Apr 24

Exposures Used:
R: 17 x 180 sec
G: 13 x "
B: 16 x "
H: 24 x 1200 sec (Gain 3)
O: 26 x   "
Total Exposure time: 19 hours
Image Width: 30' 31"

Processing Tools:
1.   Commercial: PixInsight, Topaz, Radiant Photo
2.   Pixinsight Addons: NoiseXTerminator, BlurXTerminator, StarXTerminator
3.   My Scripts: NB_Assistant, AC_Restar, Subframe Weighting Tool (Excel w/ J. Hunt)

Target Description:
RCW 86 lies in a moderately dense star field and behind another cloud. RCW displays a complex pattern of arcs and linear whisps that host considerable detail. The foreground cloud is relatively thin, adding a nice artistic fog over many stars and RCW 89.

The arcs and whips may be reminiscent of some clouds you have seen before, and that's because this is a common form of supernova remnants (Yatsu, et al., 2005).

Processing Description:
My first use of the new ImageBlend tool. Took two versions of the image and slid sliders this way and that, and finally, a smile broke on my face. I saved the result, and sure enough, it looked indistinguishable from one of the input images! But now I know how that thing works.

Target Statistics:
Distance: 10k ly

Alex Woronow

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	9761356
PixInsight job	G8VX70A80T8LF1LPZZFMSTZ9Y642VY3M
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	15h13m42s.714
RA (top/left)	15h11m43s.635
RA (top/right)	15h15m41s.810
RA (bottom/right)	15h15m40s.687
RA (bottom/left)	15h11m44s.777

Dec (center)	-59°00′27″.40
Dec (top/left)	-59°10′27″.84
Dec (top/right)	-59°10′27″.96
Dec (bottom/right)	-58°50′19″.70
Dec (bottom/left)	-58°50′19″.21

Image Index:

Contribution Index (beta):

RCW 89: Cloud upon Cloud

RCW 89: Cloud upon Cloud

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Image Index:

Contribution Index (beta):

RCW 89: Cloud upon Cloud

RCW 89: Cloud upon Cloud

Equipment

Acquisition details

Description

Comments

Sky plot

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