Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  7 Sgr  ·  9 Sgr  ·  B296  ·  B85  ·  B88  ·  B89  ·  Lagoon Nebula  ·  M 20  ·  M 8  ·  NGC 6514  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  NGC 6546  ·  Sh2-25  ·  Sh2-28  ·  Sh2-30  ·  The star 7Sgr  ·  The star 9Sgr  ·  Trifid Nebula
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M8 (Lagoon) and M20 (Trifid), 


            Charles Bonafilia
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M8 (Lagoon) and M20 (Trifid)

Getting plate-solving status, please wait...
M8 (Lagoon) and M20 (Trifid), 


            Charles Bonafilia
Powered byPixInsight

M8 (Lagoon) and M20 (Trifid)

Imaging telescopes or lenses: SkyWatcher Esprit 120 APO

Imaging cameras: ZWO ASI6200MM Pro

Guiding telescopes or lenses: SkyWatcher Esprit 120 APO

Guiding cameras: ZWO ASI174MM ASI174mm

Focal reducers: SkyWatcher 0.77x Reducer for Esprit-120ED

Software: Adobe Photoshop CC Photoshop CC 2020  ·  PixInsight

Filters: Chroma SII 3nm  ·  Chroma Ha 3nm  ·  Chroma OIII 3nm

Dates:June 12, 2021June 13, 2021June 14, 2021June 25, 2021June 26, 2021June 27, 2021July 1, 2021July 2, 2021July 5, 2021July 9, 2021July 10, 2021July 11, 2021July 13, 2021July 14, 2021July 15, 2021July 16, 2021July 17, 2021

Chroma Ha 3nm: 78x600" (13h) (gain: 100.00) -20C bin 1x1
Chroma OIII 3nm: 75x600" (12h 30') (gain: 100.00) -20C bin 1x1
Chroma SII 3nm: 88x600" (14h 40') (gain: 100.00) -20C bin 1x1

Integration: 40h 10'

Avg. Moon age: 10.95 days

Avg. Moon phase: 34.29%

Bortle Dark-Sky Scale: 6.00

Astrometry.net job: 4753503

RA center: 18h 4' 22"

DEC center: -23° 48' 27"

Pixel scale: 1.797 arcsec/pixel

Orientation: 1.711 degrees

Field radius: 1.373 degrees

Resolution: 3347x4373

Locations: Backyard, San Diego, CA, United States

Data source: Backyard


Located in the constellation of Sagittarius (The Archer), this stunning space wallpaper reveals two giant stellar nursery clouds of glowing interstellar gas; also known as the Lagoon (M and Trifid Nebulae (M20).

Although “lagoon” definitely suits the beauty of this object, “lagoon” does suggest tranquility and there is nothing placid about the high-energy radiation causing these intricate clouds to glow. The massive stars hiding within the heart of the nebula give off enormous amounts of ultraviolet radiation, ionizing the gas and causing it to shine colorfully, as well as sculpting the surrounding nebula into strange shapes. The result is an object around four to five thousand light-years away which, on a clear night, is faintly visible to the naked eye.

The Trifid Nebula, aptly named for the three distinct characteristics (dark, reflection, emission) can be found about 2 degrees to the northwest of the larger and brighter Lagoon Nebula. The Trifid is a popular target for amateur astronomers as it is quite bright, even when seen through a small telescope. It has an apparent magnitude of 6.3 and lies at approx. 5,200 light years from Earth. M20 has a linear diameter of over 40 light years and is only 300,000 years old.

This was shot over several months due to cloud cover and prior commitments. Glad it's finally done.


Sky plot

Sky plot


M8 (Lagoon) and M20 (Trifid), 


            Charles Bonafilia