NGC3077, M81 and M82

Shotdate: 4-20-2015

Camera: Nikon D4s

Optics: Nikkor 80-400mm f4.5-5.6 @ 400mm f9.0

Exposure: 300sec

ISO-speed: ISO3200

Guiding: LVI SmartGuider2 on F500mm f90mm(f5.5) guidescope

Mount: SkyWatcher NEQ6 Pro

 

Stacked in DeepSkyStacker 3.3.2

Stacking mode: Custom Rectangle

Alignment method: Automatic

Drizzle x3 enabled

Stacking 76 frames (ISO: 3200) - total exposure: 6 hr 20 mn

RGB Channels Background Calibration: No

Per Channel Background Calibration: No

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Offset: 50 frames exposure: 1/8000 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Dark: 26 frames exposure: 5 mn

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

Flat: 58 frames exposure: 1 s

Method: Kappa-Sigma (Kappa = 2.00, Iterations = 5)

 

Post-processing in PixInsight 1.8

Crop, DBE, Histogram, Core brightness, Green adaptation and ACDNR functions used.

Done