The Great Orion Nebula (Duane Melvin)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 41 the01 Ori · 42 c Ori · 43 the02 Ori · 44 iot Ori · De Mairan's nebula · Great Orion Nebula · Hatysa · LBN 974 · Lower Sword · M 42 · M 43 · Mairan's Nebula · NGC 1976 · NGC 1977 · NGC 1980 · NGC 1982 · Orion Nebula · Sh2-281 · The star 42Ori · The star θ1Ori · The star θ2Ori · The star ιOri · the Running Man Nebula

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The Great Orion Nebula

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The Great Orion Nebula

C8 SCT Celestron Nexstar Telescope (2021 model)
with 0.63x reducer; 203mm x 2030mm F10 (effective F6.3 1278.9mm Focal Length)
G26 main camera, color, 16 bits, APS-C sensor cooled to -15C

Astromania adjustable 2-inch helical backfocuser for exact 105mm back focus
Optolong L-Extreme filter in Starizona Magnetic Tray

EQ6R PRO mount
QHY CCD Polemaster NCP alignment system, camera/software

Orion 80x300 guide scope with starshoot autoguider TM camera ST4 to mount
PHD2 guiding with plus/minus 0.2 Pixel guide performance at 3.76u pixel size

SVBony wrap heaters
Synscan hand control used for all control functions, one-star alignment procedure (Capella)
Telrad finder device
Synscannit cell app used as my real-time source for location, time, time zone, date, altitude, etc
APT image capture, exposure sequencing, and camera cooler control

Deep sky stacker 90 subs at 45 Seconds each, 32 best were chosen to stack (chosen by the software)
35 darks, 11 Flats, 11 Bias

Photoshop, star spikes 4 plugin

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	5298136
PixInsight job	JCRV9XWFIVS0WBOEL279I5WW06VKPN1I
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	05h35m11s.501
RA (top/left)	05h37m28s.338
RA (top/right)	05h35m13s.828
RA (bottom/right)	05h32m54s.576
RA (bottom/left)	05h35m08s.322

Dec (center)	-05°23′44″.74
Dec (top/left)	-05°38′30″.89
Dec (top/right)	-04°46′41″.98
Dec (bottom/right)	-05°08′50″.79
Dec (bottom/left)	-06°00′54″.32

Image Index:

Contribution Index (beta):

The Great Orion Nebula

The Great Orion Nebula

Equipment

Acquisition details

Description

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Image Index:

Contribution Index (beta):

The Great Orion Nebula

The Great Orion Nebula

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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IOTD/TP stats (last [x] days)

Distribution of astrophotographers

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Distribution of data sources

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