Contains:  Solar system body or event
Turbulent Venus, astropical

Turbulent Venus

Acquisition type: Lucky imaging
Turbulent Venus, astropical

Turbulent Venus

Acquisition type: Lucky imaging

Equipment

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Acquisition details

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Description

My first Venus capture ever. Not only is Venus featureless without special filters, but also its altitude (34 deg at capture) is always low while embedded in turbulent air. With an ROI (region of interest, not return of investment) of 640 x 480 the recording of 1000 to 5000 frames happened in no time at 160fps, easing tracking concerns. Nevertheless, focusing was a real pain, actually next to impossible. Venus' magnitude was -3.92.

The unsharpened output of AS3 was used to apply an unsharp mask and slight Curve-up in PS. If pre-shapened in AS3, further processing would result in an unwanted ghost halo around the sickle, which is a stacking artifact as a result of too strong air turbulences.

Anyway...it was quick but not easy :-)

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Histogram

Turbulent Venus, astropical