"Autumn Leaf on Silted Stream" (IC 5146, Cocoon Nebula) (Howard Trottier)

Celestial hemisphere: Northern · Constellation: Cygnus (Cyg) · Contains: B168 · Cocoon Nebula · IC 5146 · Sh2-125 · VdB147

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"Autumn Leaf on Silted Stream" (IC 5146, Cocoon Nebula)

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"Autumn Leaf on Silted Stream" (IC 5146, Cocoon Nebula)

As implied by the title, I hope that this presentation of the Cocoon might fancifully suggest a colourful autumn leaf that has floated along a stream and been momentarily trapped by silt. The stars crowding the corners might then give the impression of multicoloured gems having also been carried there by the current. 🤓

This is the sixth image that I've completed using my "Final Frontier Telescope", which was installed at the Sierra Remote Observatories (SRO) at the end of June. My system includes a PlaneWave CDK 24" on a PlaneWave single-fork L600, an FLI Kepler 4040 camera, and Chroma Technology filters.

This is the result of just under 12 hours of subframes (300 minutes luminance and 400 minutes RGB), captured on three nights in late August and one night in mid-October. To optimize the final appearance, I downsampled the full-scale image by 75%, with a final plate scale of about 0.62"/pixel, and an angular image size after cropping of about 31' x 30'.

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	Distinct awarded users	Total awarded images
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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
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Star trails
Northern lights
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	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
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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.
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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	4015730
PixInsight job	I7ZBAUNO7E6Z053WU4Q0DSCUIZLY1FQC
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	21h53m26s.424
RA (top/left)	21h54m55s.357
RA (top/right)	21h54m56s.746
RA (bottom/right)	21h51m56s.636
RA (bottom/left)	21h51m56s.942

Dec (center)	+47°14′13″.69
Dec (top/left)	+46°58′36″.31
Dec (top/right)	+47°29′41″.64
Dec (bottom/right)	+47°29′47″.44
Dec (bottom/left)	+46°58′41″.88

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"Autumn Leaf on Silted Stream" (IC 5146, Cocoon Nebula)

"Autumn Leaf on Silted Stream" (IC 5146, Cocoon Nebula)

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Image Index:

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"Autumn Leaf on Silted Stream" (IC 5146, Cocoon Nebula)

"Autumn Leaf on Silted Stream" (IC 5146, Cocoon Nebula)

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