150 millimeters closer to Mars

View Original size, please. In main window image may suffer from aliasing.

 

Taken in pretty unfavourable conditions - 13° above horizont with clouds rolling in.

150 mm of aperture and almost 4 meters of focal length had made a big diference, if compared to 110/2070 mm scope.

As I know, the Polar cap on Mars melts at "summer" and the ice recesses at a pace of a running man - 6 kph. So in one week it can shrink dramatically.

 

Aquisition time (start of the session) : JD2456746,3319213 (29.03.3014 22:57:58 MSK).

Image orientation: scrambled

Equipment:

Canon EOS 60D (unmodded) coupled to Celestron OMNI XLT 150 mm f/5 Newtonian reflector via 5x Barlow and mounted on SkyWatcher NEQ-6 Pro mount.

Aperture 150 mm

Native focal length 750 mm

Effective focal length 3750 mm

Tv = 1/50 seconds

Av (effective) = f/25

ISO 1600

Exposures: 33% of 3000+ (1 minute of acqusition)

Processing: .MOV 2 .AVI via SUPER, Autostakkert!2, Photoshop to align cahnnels and kill atmospheric dispersion, deconvolution in AstraImage 3.0 (Richardson-Lucy algorithm, Cauchy type PSF, size 2,1 units, 8 iterations).

Back to Photoshop for leveles and curves .

Done