Designation |
M 17, NGC 6618, Omega Nebula,
Swan Nebula |
Constellation |
Sagittarius (Sgr) |
Description |
M 17, the Omega nebula - also
referred to as the Swan - is a beautiful emission nebula showing a figure
2 shape. It was discovered by Messier in 1764 and lies about 6000
lightyears from earth. This image was generated as a test of the
ALT5 mount's guiding performance and lacks composition and calibration
frames.
See a colour rendering of M 17 here
and another H-Alpha image taken with a 14.5" Ritchey-Chrétien
telescope here.
|
Exposure |
Ha 6 x 15 min @ -20°C |
Camera |
SBIG ST-10XE selfguided,
SBIG CFW-8 with Custom Scientific 4.5 nm Ha filter |
Optics |
Intes Micro MN106 10"
Maksutov-Newton @ f/5.5
(prime focus) |
Mount |
ALT-5 ADN German Equatorial Mount
with FS-2 controller |
Software |
MaxIm DL/CCD, Registar, Adobe
Photoshop 6.0 |
Location - Date - Time |
San Esteban (Chile) - 04Jun2003 -
04:00 UTC |
Conditions |
Transparency 8, Seeing
5-6, Temperature 7°C |