Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Lagoon Nebula  ·  M 8  ·  NGC 6523  ·  NGC 6526  ·  NGC 6530  ·  The star 7Sgr  ·  The star 9Sgr
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m8 lagoon nebula in HSS, 


            John Mart
m8 lagoon nebula in HSS
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m8 lagoon nebula in HSS

Imaging telescopes or lenses: Explorer Scientific ED102

Imaging cameras: ZWO ASI 1600MM-PRO

Mounts: SkyWatcher EQ6-R Pro

Guiding telescopes or lenses: ZWO 60/280 Guiderscope

Guiding cameras: ZWO 290MM mini

Focal reducers: Stellarvue SFFR102-2 field flattener and 0.8x reducer

Software: PinInsight 1.8  ·  SGP  ·  PHD 2

Filters: Optolong Ha 1.25" 7nm  ·  Optolong SII 1.25" 6.5nm

Accessory: ZWO EFW 1.25 8 Position  ·  ZWO EAF Electronic Auto Focuser  ·  Pegasus Astro Pocket Power Box  ·  Startech Industrial USB3 Hub  ·  QHY PoleMaster PoleMaster

Dates:Aug. 11, 2020

Optolong Ha 1.25" 7nm: 21x180" (gain: 139.00) -15C bin 1x1
Optolong SII 1.25" 6.5nm: 20x180" (gain: 139.00) -15C bin 1x1

Integration: 2.0 hours

Darks: ~30

Flats: ~30

Flat darks: ~30

Avg. Moon age: 21.97 days

Avg. Moon phase: 51.92%

Bortle Dark-Sky Scale: 5.00

Temperature: 19.00

Basic astrometry details

Astrometry.net job: 4134104

RA center: 18h 4' 13"

DEC center: -24° 14' 31"

Pixel scale: 1.369 arcsec/pixel

Orientation: 93.126 degrees

Field radius: 0.971 degrees

Resolution: 3882x3311

Locations: Home observatory, Atlanta, Georgia, United States

Data source: Backyard


I had a little data left from 2020 to process. I only had a couple hours on the lagoon nebula in Ha and Sii. I went with an HSS mapping to RGB. Plenty of room for improvement next time, but nice to close out this attempt.


Sky plot

Sky plot


m8 lagoon nebula in HSS, 


            John Mart