A Star Factory ( KuriousGeorge )

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A Star Factory

Imaging Telescopes Or Lenses: Planewave CDK24
Imaging Cameras: FLI PL16803
Mounts: Planewave L600
Filters: Astrodon 50 mm 5 nm Ha · Astrodon 50mm B · Astrodon 50mm R · Astrodon 50 mm 5 nm OIII · Astrodon 50 mm G
Accessories: FLI CFW-5-7 · Planewave EFA · Hedrick Focuser · Planewave Delta-T
Software: Adobe Photoshop · Diffraction Limited MaxIm DL · Planewave PWI4 · PixInsight 1.8 · Sequence Generator Pro · Photoshop CS3 · Planewave PWI3
Guiding Cameras: Starlight Xpress Ultrastar M

Dates:: Aug. 5, 2021 · Aug. 6, 2021 · Aug. 7, 2021
Frames:: Astrodon 50 mm 5 nm Ha: 12×900″(3h) -20°C bin 1×1
Astrodon 50 mm 5 nm OIII: 9×900″(2h 15′) -20°C bin 1×1
Astrodon 50 mm G: 6×900″(1h 30′) -20°C bin 1×1
Astrodon 50mm B: 6×900″(1h 30′) -20°C bin 1×1
Astrodon 50mm R: 6×900″(1h 30′) -20°C bin 1×1
Integration:: 9h 45′
Darks:: 20
Flats:: 100
Flat darks:: 100
Bias:: 20
Avg. Moon age:: 27.53 days
Avg. Moon phase:: 5.07%
Mean SQM:: 21.40
Mean FWHM:: 2.00

RA center: 23h13m43s.479

DEC center: +61°30′41″.76

Pixel scale: 0.468 arcsec/pixel

Orientation: -178.953 degrees

Field radius: 0.272 degrees

More info:Open

Resolution: 3174x2723

File size: 1.1 MB

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

NGC 7538 is a stellar nursery for massive stars. Located around 9,000 light-years away, this is one of the few regions of massive-star formation that are relatively close to us, allowing astronomers to investigate this process in great detail.

Star factories like NGC 7538 consist mainly of hydrogen gas, but they also contain small amounts of cosmic dust. It was through this minor – but crucial – component that Herschel could image these star-forming regions, because dust shines brightly at the far-infrared wavelengths that were probed by the observatory.

With a total mass of almost 400,000 Suns, NGC 7538 is an active factory where stars come to life – especially huge ones that are over eight times more massive than the Sun. Hundreds of seeds of future stellar generations nestle in the mixture of surrounding gas and dust scattered across the image. Once they reach a critical mass, they will ignite as stars. Thirteen of these proto-stars have masses greater than 40 Suns, and are also extremely cold, with temperatures only a few tens of degrees above absolute zero.

Unique or Unusal Deep Sky Targets

	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds

	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

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Status	Advanced success
Started	...
Astrometry.net job	4907578
PixInsight job	P1CPBEK89TZL77D8ETH1GXWJEQBO7DA8
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	23h13m43s.479
RA (top/left)	23h11m58s.429
RA (top/right)	23h15m25s.100
RA (bottom/right)	23h15m29s.417
RA (bottom/left)	23h12m00s.674

Dec (center)	+61°30′41″.76
Dec (top/left)	+61°20′15″.67
Dec (top/right)	+61°19′49″.28
Dec (bottom/right)	+61°41′02″.65
Dec (bottom/left)	+61°41′29″.77

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