NGC 6559 Chinese Dragon 6 Panel Mosaic in NB (Ian Parr)

Celestial hemisphere: Southern · Constellation: Sagittarius (Sgr) · Contains: IC 1274 · IC 4684 · IC 4685 · NGC 6546 · NGC 6559 · The star 11Sgr

NGC 6559 Chinese Dragon 6 Panel Mosaic in NB, Ian Parr

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NGC 6559 Chinese Dragon 6 Panel Mosaic in NB

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NGC 6559 Chinese Dragon 6 Panel Mosaic in NB

NGC 6559, the Chinese Dragon, is a dark nebula in the southern constellation Sagittarius. It is a relatively small, nearby dust cloud in the Milky Way that measures about seven light-years across. The dark structure is caused by cool dust that absorbs background radiation from hydrogen gas that glows in red light due to ionization from nearby stars. The intricate details and wispy structure in the dark cloud is determined by turbulence flow dynamics influenced by variables such as nearby star radiation and motions of other nearby gas and dust.

This is a 6-panel mosaic, the result of 3 nights acquisition SII, OIII and HA. A LOT of data rejection and using Normalized Scale Gradient Tool and Star Net in Pixinsight really helped cleaned it up a lot and provided a much better framework to play with although it took an entire day to process so I probably need a much faster computer and a wider field scope. Mosaics can be a real labor of love. My exposure time was limited to 3 minutes or I would run out of clear sky before it was done.

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	Image of the day	Top pick	Top pick nominations	Total submitted
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	Image of the day	Top pick	Top pick nominations	Total submitted
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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.

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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.
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Status	Basic success
Started	...
Astrometry.net job	5036572
PixInsight job	n/a
PixInsight queue size	n/a
PixInsight stage	n/a

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NGC 6559 Chinese Dragon 6 Panel Mosaic in NB

NGC 6559 Chinese Dragon 6 Panel Mosaic in NB

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NGC 6559 Chinese Dragon 6 Panel Mosaic in NB

NGC 6559 Chinese Dragon 6 Panel Mosaic in NB

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