Sergei Golyshev (AFK during workdays)
Splitting doubles #2: beta Cygni, Albireo
Splits easily and demonstrates orange main component (close double itself, K2 class, 3,18m) and fainter but hotter bluish (B8 class, 5,8m) companion.
Sorry for oblong stars :|
Aquisition time: 19.10.2013 around 22:00-23:00 MSK (UTC+4)
Equipment:
Canon EOS 60D (unmodded) running Magic Lantern firmware override on Celestron OMNI XLT 150 mm Newtonian riding on Celestron CG-4 equatorial mount with motor.
Aperture 150 mm
Focal length 750 mm
Tv = 30 seconds
Av = f/5
ISO 800
Exposures: 5 (plus 10 dark frames and 10 offset frames plus 4 fake flat-field frames).
Processing: Images were converted to 16-bit TIFFs in Canon DPP and outputs were fed to DSS. Flatfields were made from four randomly picked exposure by appliyng Gausian Blur (250 pixels radius) and adjusting histogramm to achieve 70% fill.
Colours were balanced (almost successfully) in DSS and final touches were made in Photoshop.
Splitting doubles #2: beta Cygni, Albireo
Splits easily and demonstrates orange main component (close double itself, K2 class, 3,18m) and fainter but hotter bluish (B8 class, 5,8m) companion.
Sorry for oblong stars :|
Aquisition time: 19.10.2013 around 22:00-23:00 MSK (UTC+4)
Equipment:
Canon EOS 60D (unmodded) running Magic Lantern firmware override on Celestron OMNI XLT 150 mm Newtonian riding on Celestron CG-4 equatorial mount with motor.
Aperture 150 mm
Focal length 750 mm
Tv = 30 seconds
Av = f/5
ISO 800
Exposures: 5 (plus 10 dark frames and 10 offset frames plus 4 fake flat-field frames).
Processing: Images were converted to 16-bit TIFFs in Canon DPP and outputs were fed to DSS. Flatfields were made from four randomly picked exposure by appliyng Gausian Blur (250 pixels radius) and adjusting histogramm to achieve 70% fill.
Colours were balanced (almost successfully) in DSS and final touches were made in Photoshop.