high dynamic range "lucky" image of M27 (Tim Hawkes)

Celestial hemisphere: Northern · Constellation: Vulpecula (Vul) · Contains: Dumbbell Nebula · M 27 · NGC 6853

high dynamic range "lucky" image of M27, Tim Hawkes

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high dynamic range "lucky" image of M27

Acquisition type: Lucky imaging

Powered byPixInsight

high dynamic range "lucky" image of M27

Acquisition type: Lucky imaging

Short and long 200mm Newtonian F 5.0 exposures of M27 with, firstly, a mono camera and, then, with an OSC combined into a single high dynamic range RGB image

A high dynamic range composition of the luminance images from 1021 x 3s mono camera short exposures (average FWHM 1.72) under Bortle 6 skies and from 30 x 110s (UHC filtered) longer OSC exposures (average FWHM 2.45 before debayering, about 2.8 after) of M27 under Bortle 4 skies was constructed in PixInsight so that detail at the bright center of the nebula was informed by the sharper image from the shorter exposures and the fainter outer regions informed by the longer exposures at the moonless and darker sky site. The resulting hybrid luminance was transferred to the RGB image which was then adjusted using curves in PixInsight.

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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	Basic success
Started	...
Astrometry.net job	5312508
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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high dynamic range "lucky" image of M27

high dynamic range "lucky" image of M27

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Image Index:

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high dynamic range "lucky" image of M27

high dynamic range "lucky" image of M27

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