The Pencil Nebula (NGC 2736, RCW 37) a.k.a. Herschel’s Ray (Paul Lloyd)

Celestial hemisphere: Southern · Constellation: Vela (Vel) · Contains: HD77433 · HD77453 · NGC 2736 · Pencil Nebula

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The Pencil Nebula (NGC 2736, RCW 37) a.k.a. Herschel’s Ray

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The Pencil Nebula (NGC 2736, RCW 37) a.k.a. Herschel’s Ray

The Pencil Nebula, or Herschel’s Ray, is a bright part of Vela Supernova Remnant. The supernova
explosion that produced this nebula is estimated to have occurred 10,000-12,000 years ago. The
resulting nebula is a strong H-II emitting structure (the bluish colour), typical of supernova remnants.
It lies 815 ly away, is about 5 ly across, and is estimated to be moving at 644,000 km/h. It was first
discovered by John Herschel in 1835 when he was making a study of the southern hemisphere skies
from the Cape of Good Hope. It is visually very dim, requiring a large telescope and very dark skies.

Telescope: William Optics FLT110 f/7 770mm refractor + 2x Televue Powermate (f=1540mm)
Camera: ZWO ASI2600MC Pro
Exposure: 40 x 600 sec, no filter, gain=50, bin 1x1
Bortle 3-4 sky, 40% Moon waxing
Field of View: approx. 0º 52’ x 0º 37’
Image processed and prepared in PixInsight and Photoshop Elements

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	9611810
PixInsight job	671B0M9D3KD8OJN14R53Y1A8SC56PK5O
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	09h00m12s.50
RA (top/left)	08h58m38s.63
RA (top/right)	08h58m36s.20
RA (bottom/right)	09h01m46s.92
RA (bottom/left)	09h01m46s.41

Dec (center)	-45°59′59″.9
Dec (top/left)	-45°36′40″.3
Dec (top/right)	-46°23′05″.8
Dec (bottom/right)	-46°23′14″.10
Dec (bottom/left)	-45°36′50″.1

Image Index:

Contribution Index (beta):

The Pencil Nebula (NGC 2736, RCW 37) a.k.a. Herschel’s Ray

The Pencil Nebula (NGC 2736, RCW 37) a.k.a. Herschel’s Ray

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Image Index:

Contribution Index (beta):

The Pencil Nebula (NGC 2736, RCW 37) a.k.a. Herschel’s Ray

The Pencil Nebula (NGC 2736, RCW 37) a.k.a. Herschel’s Ray

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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