Hemisphere:  Southern  ·  Constellation: Sagittarius (Sgr)  ·  Contains:  Checkmark Nebula  ·  IC 4706  ·  IC 4707  ·  Lobster Nebula  ·  M 17  ·  NGC 6596  ·  NGC 6618  ·  Swan Nebula  ·  omega Nebula
Getting plate-solving status, please wait...
M17 The Swan Nebula, 


            Chuck Manges
M17 The Swan Nebula
Powered byPixInsight

M17 The Swan Nebula

Technical card

Imaging telescopes or lenses: Celestron C1100 Edge HD + Hyperstar  ·  Astro-Tech AT65EDQ 65mm f/6.5 ED quadruplet #2

Imaging cameras: QHY CCD QHY 128C  ·  QHY163M

Mounts: Orion HDX110

Guiding cameras: QHYCCD QHY5-III 290M

Focal reducers: Starzona Hyperstar

Software: PHD guiding  ·  Main Sequence Software SGPro  ·  Adobe Photoshop CS6  ·  APT - Astro Photography Tool

Filters: Optolong O-III Optolong 2" OIII  ·  Optolong 2" HA 7nm  ·  Optolong 2" LUM

Dates:Aug. 11, 2020Aug. 19, 2020

Optolong 2" HA 7nm: 30x120" bin 1x1
Optolong 2" HA 7nm: 10x600" bin 1x1
Optolong 2" LUM: 17x300" bin 1x1
Optolong O-III Optolong 2" OIII: 30x120" bin 1x1

Integration: 5.1 hours

Darks: ~25

Avg. Moon age: 11.20 days

Avg. Moon phase: 26.07%

Bortle Dark-Sky Scale: 4.00

Basic astrometry details

Astrometry.net job: 3798069

RA center: 18h 20' 51"

DEC center: -16° 11' 45"

Pixel scale: 1.446 arcsec/pixel

Orientation: 172.723 degrees

Field radius: 1.087 degrees

Resolution: 4343x3229

Data source: Backyard


M17 The Swan Nebula in HST Palette

M17 The Swan Nebula(NGC 6618) is also known as the Omega, Checkmark or Horseshoe Nebula. It is an HII region in the constellation of Sagittarius, 5000-6000 light years away.
I used 2 different setups to capture this:
11" Celestron Edge HD w/Hyperstar V4 (setup#1)

HA:30x120 sec (Red/50% blend)
OIII:30x120 sec (Blue/Blue 50% blend)
HA+OIII- as 50% Lum

RGB:17x300 sec(from widefield image): flic.kr/p/2jyPSEL

Center (RA, Dec):(275.215, -16.195)
Center (RA, hms):18h 20m 51.654s
Center (Dec, dms):-16° 11' 42.834"
Size:1.75 x 1.31 deg
Radius:1.091 deg
Pixel scale:1.45 arcsec/pixel
Orientation:Up is 172 degrees E of N