The Fantastic Four Mosaic - M8, M20, M21, IC4685 and others (Delberson)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: Hourglass nebula · IC 1274 · IC 1275 · IC 4685 · Lagoon nebula · M 20 · M 21 · M 8 · NGC 6514 · NGC 6523 · NGC 6526 · NGC 6530 · NGC 6531 · NGC 6546 · NGC 6559 · The star 11Sgr · The star 4Sgr · The star 60Sgr · The star 62Sgr · The star 7Sgr · The star 9Sgr · Trifid nebula

The Fantastic Four Mosaic - M8, M20, M21, IC4685 and others, Delberson

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The Fantastic Four Mosaic - M8, M20, M21, IC4685 and others

The Fantastic Four Mosaic - M8, M20, M21, IC4685 and others

Well, after one week of hard work, finally I completed my first mosaic through telescope. Initially, I thought that was necessary only two panels, but in the end was eight.

It was 138 shots of 300 seconds each one in ISO400, resulting in 11.5 hours of exposure, through four nights and several hours of computer processing. Adobe Photoshop helped me a lot to put the parts together, without PS the work would have been much more harder.

The experience gained was the stronger point, furthermore the final image will have a special place in my gallery.

I hope you enjoy it!

Imaged with APT

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	1181574
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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The Fantastic Four Mosaic - M8, M20, M21, IC4685 and others

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The Fantastic Four Mosaic - M8, M20, M21, IC4685 and others

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