Planetary Nebula Duo: MWP 1 and Alv 1 ( Wei-Hao Wang )

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Planetary Nebula Duo: MWP 1 and Alv 1

Imaging Telescopes Or Lenses: Planewave CDK20 (f/6.8 version)
Imaging Cameras: Moravian Instruments C5A-100M
Mounts: Planewave L-500
Filters: Baader Bessel-B 50x50 mm · Baader Bessel-R 50x50 mm · Baader Bessel-V 50x50 mm · Baader O-III 6.5nm (CMOS-Optimized) 50x50 mm · Custom Scientific H-alpha 10nm 50x50 mm
Software: Adobe Photoshop · Nikita Misiura StarNet · Pleiades Astrophoto PixInsight

Dates:: June 22, 2023 · June 26, 2023 · July 12, 2023 · July 16, 2023 · July 20, 2023
Frames:: Baader Bessel-B 50x50 mm: 17×480″(2h 16′) bin 2×2
Baader Bessel-R 50x50 mm: 12×300″(1h) bin 2×2
Baader Bessel-V 50x50 mm: 12×300″(1h) bin 2×2
Baader O-III 6.5nm (CMOS-Optimized) 50x50 mm: 64×480″(8h 32′) bin 2×2
Custom Scientific H-alpha 10nm 50x50 mm: 150×480″(20h) bin 2×2
Integration:: 32h 48′
Avg. Moon age:: 13.38 days
Avg. Moon phase:: 20.35%

RA center: 21h16m16s.895

DEC center: +34°07′04″.29

Pixel scale: 0.673 arcsec/pixel

Orientation: 0.012 degrees

Field radius: 0.451 degrees

WCS transformation: thin plate spline

More info:Open

Resolution: 3862x2890

File size: 2.4 MB

Locations: Yushan National Park (Taiwan), Chia-Yi, Taiwan

Data source: Own remote observatory

Remote source: Non-commercial independent facility

An HOORGB composition. The nebulas come from Ha and OIII narrow-band images. The stars and galaxies come from RGB broad-band images.

These two PNs are very faint. The OIII emission from the larger nebula (MWP 1) can be seen in broad-band G and B images. Everything else (the PN and background nebulas) can only be effectively detected in long-exposure narrow-band images. They are actually so faint that I had to take some of the narrow-band exposures under moonless times. I am not sure if I want to challenge something like this ever again.

Original
Final
B

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Status	Advanced success
Started	...
Astrometry.net job	8120763
PixInsight job	PHKU5CHZA1NGSED6QASONNT639SEUS90
PixInsight queue size	n/a
PixInsight stage	TASK_LOG

RA (center)	21h16m16s.895
RA (top/left)	21h18m01s.695
RA (top/right)	21h14m32s.138
RA (bottom/right)	21h14m32s.772
RA (bottom/left)	21h18m00s.995

Dec (center)	+34°07′04″.29
Dec (top/left)	+34°23′11″.95
Dec (top/right)	+34°23′10″.81
Dec (bottom/right)	+33°50′50″.99
Dec (bottom/left)	+33°50′50″.10

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Planetary Nebula Duo: MWP 1 and Alv 1

Planetary Nebula Duo: MWP 1 and Alv 1

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Planetary Nebula Duo: MWP 1 and Alv 1

Planetary Nebula Duo: MWP 1 and Alv 1

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