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Object name: M17 - Omega Nebula   Optics:   TEC 180 FL with original flattener
  Objekt type: Emission nebula   Focal lenght:   1260 mm
  Constellation: Sagittarius   Camera:   FLI ML 16803-65
  Location / Date: Remseck / October 2012   Exposure:   9 x 1200 sec Ha / 6 x 1200 sec OIII / 5 x 1200 sec SII
  Distance: approx. 5000-6000 ly   Filters:   Astrodon 3 nm narrowband filters
  Apparent dimensions: approx. 11'   Mount:   10micron GM2000 HPS
  Real dimensions: approx. 40 ly   Autoguiding:   Off-Axis Guider - SX Lodestar
  Brightness: approx. 6.0 mag   Software:   MaxIm DL / Registar / Photoshop CS5 / PixInsight
  Position (R.A. / DEC): 18h 20' 26" / -16° 10.6'   Image processing:   Tone mapping according to real colors
 
 


E
xplanation

M17 - the" Omega-Nebula", also know as the "Swan-Nebula" is a bright emission nebula in constellation Sagittarius.
It is considered as one of the most massive star-forming regions of our galaxy.