FULL RES
Name / Constellation

NGC 1491

 Other: SH2-206; LBN 704; H I-258; GC 793

Per
Coordinates AR: 04h 03m 14sec - Dec: +51° 18' 58"
Optics Takahashi FSQ 106N APO Fluorite F5 - 60/220 guiding refractor
Camera-Mount SBIG STF8300M - Orion StarShot Guider - 10Micron GM2000 QCI Mount
Filters Baader Halpha 7 nm - Oxygen 3 -Sulfur 2
Exposure
  • Halpha
  • Oxygen 3
  • Sulfur 2
  • 17 x 900 sec - 4 hours 15 min
  • 11 x 900 sec - 2 hours 45 min
  • 9 x 900 sec - 2 hours 15 min
  • BINNING 2X2
  • BINNING 2X2
  • BINNING 2X2
Location / Date Promiod (Valle D'Aosta-Italy) "TLP" Observatory - 12 / 16 nov 2017
Seeing 3" - 2.1 arcosec/pixel unbinned
Note  
Acquisition MaxIm DL - CCD Autopilot 5
Processing Adobe Photoshop CS5 -
Comment

NGC 1491 is a H-II region with ionized gas coming from star BD+50° 886, a blue mag 11.2 star. It's 11400 light-yeras away and has apparent dimensionos 9' x 6'.