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Hemisphere:  Southern  ·  Contains:  Hourglass nebula, Lagoon nebula, M 20, M 8, NGC 6514, NGC 6523, NGC 6526, NGC 6530, NGC 6546, The star 7Sgr, The star 9Sgr, Trifid nebula
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The Lagoon and Trifid Nebulae - Hubble Palette, 


            Peter Dunsby
The Lagoon and Trifid Nebulae - Hubble Palette
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The Lagoon and Trifid Nebulae - Hubble Palette

Technical card

Imaging telescopes or lenses: TS-Optics Ed Apo 80/560 f7 refractor

Imaging cameras: ZWO ASI1600MM Pro

Guiding cameras: ZWO ASI120MM

Focal reducers: TS-Optics TS PHOTOLINE x0.80

Software: Stark Labs Nebulosity 4.1  ·  PHD2  ·  Pixinsight

Filters: ZWO OIII 7nm  ·  ZWO SII 7nm  ·  ZWO H-alpha 7nm

Dates:June 4, 2018June 5, 2018June 6, 2018

ZWO H-alpha 7nm: 46x180" (gain: 200.00) -20C bin 1x1
ZWO OIII 7nm: 73x120" (gain: 200.00) -20C bin 1x1
ZWO SII 7nm: 35x300" (gain: 200.00) -20C bin 1x1

Integration: 7.6 hours

Darks: ~40

Flats: ~50

Avg. Moon age: 21.00 days

Avg. Moon phase: 61.99%

Bortle Dark-Sky Scale: 6.00

Basic astrometry details job: 2091842

RA center: 18h 4' 20"

DEC center: -23° 46' 48"

Pixel scale: 1.769 arcsec/pixel

Orientation: 89.725 degrees

Field radius: 1.231 degrees

Resolution: 4009x3007

Data source: Backyard


I was blessed with three clear nights running, with excellent seeing. Each night was devoted to a separate channel (Ha, OIII & SII). Very happy with the result.

Images were taken in my suburban backyard in Newlands, Cape Town.



Peter Dunsby
License: None (All rights reserved)

Sky plot

Sky plot


The Lagoon and Trifid Nebulae - Hubble Palette, 


            Peter Dunsby