DEEPSKY OBJECT M16/M17 Taken by Reza Hakimi on September 12, 2018 @ Tehran, Iran

Image Information
Date: 12-09-2018
Time (Specify Time Zone): +3:30
Observing Location: Tehran, Iran
Sky Conditions: Seeing 5/10 - Transparency 5/10
Objects Name or Designation: Emerald Forest -- M16 & M17 Nebulae Regions
Telescope or Lens Used: Canon EF 200mm F/2.8L II USM Lens
Aperture: 4
Focal Ratio: 200mm
Camera: ZWO ASI 1600mm-c 16mp cmos sensor
Film: N/A
Filter(s): Baader Planetarium Ha 7nm - OIII 8.5m, - SII 8nm
Exposure Time(s): Ha: 34*10min / OIII: 35*10min / SII: 21*10 min - Total Exposure: 15 hours
Special Techniques Used: Hubble palette for narrow-band imaging is used. Sulfur has been mapped to red, Hydrogen to green and oxygen to blue channels.
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Other Comments or Description: Corresponding Flats, Darks and Bias calibration frames is used.
other Technical info:
Mount: Skywatcher NEQ6
Guided by ZWO ASI 120mm and Skywatcher 80/400 achromatic
Gain 139 / ccd temp -10 °C / ZWO EFW filterwheel