IC 4685 and Friends: A View in HaLRGB (Fernando)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: IC 1274 · IC 1275 · IC 4685 · NGC 6559

IC 4685 and Friends: A View in HaLRGB, Fernando

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IC 4685 and Friends: A View in HaLRGB

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IC 4685 and Friends: A View in HaLRGB

This beautiful region close to M-8, is a complex of emission, reflexion and dark nebulae. As such, several objects catalogued in the NGC and IC catalogues can be found. For example, IC 1274 is the bright, circular nebula at the right bottom of the image.This is one of the most impotant object in the complex, due to the rate of star formation in its neighborhood. Just above is the fainter circular nebula IC 1275. Between the two is situated a wide dark nebula Barnard 91. The dark filaments of Bernard 91 can be seen spreading out across the reflection nebula embedded in IC 1247.

At the top right is a bright filament close tot the a relection area, known as NGC 6559. The thin dark lane to its lower left is Barnard 303. The nebulosity around Barnard 303 is IC 4685.

Some other patches of dark nebulae can be seen around the image.

Some Databook Information For IC 1274

Right Ascension: 18:09:50 (h:m:s)

Declination: -23:38:54 (deg:m:s)

Distance: ~ 5.000ly

Apparent Dimension: 5 x 6 (arc min)

Image Details:

Luminance: 15x900sec bin 1x1

Ha: 16x1200sec bin 1x1

Blue: 16x600sec bin 2x2

Red: 12x600sec bin 2x2

Green: 12x600sec bin 2x2

Telescope: Skywatcher Esprit 120mm f/7

CCD: ST-8300M

CCD Guiding: Lodestar

Capture and guiding software: MaxIm DL

Mount: EQ-6 Pro

Processing: PixInsight

Bias, Darks and Flats applied

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	Basic success
Started	...
Astrometry.net job	365829
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

Image Index:

Contribution Index (beta):

IC 4685 and Friends: A View in HaLRGB

IC 4685 and Friends: A View in HaLRGB

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Image Index:

Contribution Index (beta):

IC 4685 and Friends: A View in HaLRGB

IC 4685 and Friends: A View in HaLRGB

Equipment

Acquisition details

Description

Comments

Sky plot

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