A Dying Star's Magnetic Racing Stripes (NGC 6894) ( KuriousGeorge )

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A Dying Star's Magnetic Racing Stripes (NGC 6894)

Imaging Telescopes Or Lenses: Planewave CDK24
Imaging Cameras: ZWO ASI6200MM Pro
Mounts: Planewave L-600
Filters: Astrodon Gen2 E-Series Tru-Balance Blue 50x50 mm · Astrodon Gen2 E-Series Tru-Balance Green 50x50 mm · Astrodon Gen2 E-Series Tru-Balance Red 50x50 mm · Astrodon H-alpha 5nm 50x50 mm · Astrodon OIII 5nm 50x50 mm
Accessories: Planewave Delta T Heater · Planewave Electronic Focus Accessory (EFA) Kit · Planewave Hedrick Focuser
Software: Adobe Photoshop · Planewave Platesolve2 · Planewave PWI3 · Planewave PWI4 · Pleiades Astrophoto PixInsight
Guiding Cameras: Starlight Xpress Ultrastar M

Dates:: July 23, 2022 · July 24, 2022 · July 25, 2022 · July 26, 2022
Frames:: Astrodon Gen2 E-Series Tru-Balance Blue 50x50 mm: 24×300″(2h) (gain: 100.00) -5°C bin 2×2
Astrodon Gen2 E-Series Tru-Balance Green 50x50 mm: 24×300″(2h) (gain: 100.00) -5°C bin 2×2
Astrodon Gen2 E-Series Tru-Balance Red 50x50 mm: 24×300″(2h) (gain: 100.00) -5°C bin 2×2
Astrodon H-alpha 5nm 50x50 mm: 69×600″(11h 30′) (gain: 100.00) -5°C bin 2×2
Astrodon OIII 5nm 50x50 mm: 46×600″(7h 40′) (gain: 100.00) -5°C bin 2×2
Integration:: 25h 10′
Darks:: 40
Flats:: 100
Flat darks:: 100
Bias:: 20
Avg. Moon age:: 26.17 days
Avg. Moon phase:: 13.07%
Mean SQM:: 21.40
Mean FWHM:: 1.70

RA center: 20h16m23s.837

DEC center: +30°33′56″.38

Pixel scale: 0.196 arcsec/pixel

Orientation: 0.884 degrees

Field radius: 0.229 degrees

WCS transformation: thin plate spline

More info:Open

Resolution: 6818x4942

File size: 7.4 MB

Locations: KG Observatory, Julian, CA, United States

Data source: Backyard

This title is from Phil Plait who has an excellent description for what may be happening here...

https://www.syfy.com/syfy-wire/a-dying-stars-magnetic-racing-stripes

And an excellent science paper...

https://articles.adsabs.harvard.edu/pdf/1997MNRAS.289..665S

Skies were very dark and steady during this data acquisition with the FWHM on the 10-min Ha subs between 1.26" and 2.2". OIII subs varied between 1.3" and 2.2".

Nearly all the "racing stripe" energy is in Ha with the majority of OIII in the core perimeter.

A light RGB screen was placed over the top to add a bit more star color. The HaOIII combination was tuned to have nearly the same color balance as the RGB for both the stars and the nebula core.

ASI 6200 MM Pro
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	6080004
PixInsight job	3E1VNMG3BV3BWNLIY92HZ5WIDJPKLTXI
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	20h16m23s.837
RA (top/left)	20h17m16s.660
RA (top/right)	20h15m32s.783
RA (bottom/right)	20h15m31s.760
RA (bottom/left)	20h17m14s.832

Dec (center)	+30°33′56″.38
Dec (top/left)	+30°41′49″.34
Dec (top/right)	+30°42′08″.68
Dec (bottom/right)	+30°26′03″.10
Dec (bottom/left)	+30°25′42″.28

Image Index:

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A Dying Star's Magnetic Racing Stripes (NGC 6894)

A Dying Star's Magnetic Racing Stripes (NGC 6894)

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Image Index:

Contribution Index (beta):

A Dying Star's Magnetic Racing Stripes (NGC 6894)

A Dying Star's Magnetic Racing Stripes (NGC 6894)

Equipment

Acquisition details

Description

Comments

Sky plot

Histogram

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