NGC 2174 - Monkey's Head Nebula (Jim DeLillo)

Celestial hemisphere: Northern · Constellation: Orion (Ori) · Contains: IC 2159 · Monkey Head Nebula · NGC 2174 · NGC 2175 · Sh2-252

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NGC 2174 - Monkey's Head Nebula

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NGC 2174 - Monkey's Head Nebula

NGC 2174 (also known as Monkey Head Nebula) is an H II emission nebula located in the constellation Orion and is associated with the open star cluster NGC 2175. It is thought to be located about 6,400 light-years away from Earth. The nebula may have formed through hierarchical collapse.

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iTelescope t21 SHO

Observatory: New Mexico Skies at Mayhill, New Mexico - MPC H06

Telescope: 0.43-m f/6.8 reflector + CCD + f/4.5 focal reducer

Timezone: UTC Minus 7:00. Daylight savings time is observed

Minimum Target Elevation: Approx 20-25 Degrees

Instrument Package

CCD: FLI-PL6303E CCD camera

QE: 68% Peak

Gain: 1.16

Full Well: ~100,000e- Non Anti Blooming Gate (NABG)

Dark Current: ~.005 e-/pixel/sec. @ -45º C

Conversion Factor (Gain): 1.13

Pixel Size: 9um Square

Resolution: 0.96 arc-secs/pixel

Sensor: Frontlit

Cooling: Set to -35ºC default

Array: 3072 by 2048 (6.3 Megapixels)

FOV: 32.8 x 49.2 arc-mins

Filters: Luminance, Red, Green, Blue, Ha, SII, OIII, U, B, V, Rc, Ic

Position Angle: 359º

Telescope Optics

OTA: Planewave 17" CDK

Optical Design: Corrected Dall-Kirkham Astrograph

Aperture: 431mm

Focal Length: 1940mm (0.66 Focal Reducer)

F/Ratio: f/4.5

Guiding: Active Guiding Disabled

Mount: Planewave Ascension 200HR

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	4379912
PixInsight job	UYKC36IISCA7E3YF8DZFPT4I1X2KKZJW
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	06h09m29s.357
RA (top/left)	06h08m31s.606
RA (top/right)	06h08m21s.700
RA (bottom/right)	06h10m26s.756
RA (bottom/left)	06h10m37s.355

Dec (center)	+20°35′36″.49
Dec (top/left)	+20°58′52″.20
Dec (top/right)	+20°13′51″.80
Dec (bottom/right)	+20°12′18″.59
Dec (bottom/left)	+20°57′18″.60

Image Index:

Contribution Index (beta):

NGC 2174 - Monkey's Head Nebula

NGC 2174 - Monkey's Head Nebula

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Image Index:

Contribution Index (beta):

NGC 2174 - Monkey's Head Nebula

NGC 2174 - Monkey's Head Nebula

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