Thank You sir.
As usual, excellent work by you two….
And that little “pause” waiting for Venus to appear on the far side of the obs
was GREAT !!
David Douglass
David@xxxxxxxxxxxxxxx (main)
Dmdouglass@xxxxxxxxxxxxxxx (Alternate)
Cell (602) 908-9092
On 3/20/17, 9:53 AM, "Tom Polakis" <az-observing-bounce@xxxxxxxxxxxxx on behalf
of tpolakis@xxxxxxx> wrote:
Dean Ketelsen and I independently had the idea to photograph the crescent
Venus setting behind Kitt Peak. Last night, Jenn and I set up with Dean
along the road to the border town of Sasabe. Using SkySafari and Google
Earth, I found a site where (I hoped) Venus would set behind the dome of the
4-meter Mayall telescope. The best still photo of the lot is here.
http://www.pbase.com/polakis/image/165154232/original
As it approached the 4-meter telescope dome, I photographed at an interval
of about 1 second to create this time-lapse sequence.
http://www.pbase.com/polakis/image/165154236/original
By this time, the correct exposure for the twilight sky was about 1/30s,
while the exposure for Venus remained 1/1000s. Since it's a moving target,
HDR won't work, so you're stuck with a very dark foreground, brightened as
much as practicable in Photoshop.
Tom
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