Venus 0.8% Illumination in daylight
Taken by Sylvain Weiller on January 7, 2014 @
SAINT-RÉMY-LES-CHEVREUSE
FRANCE
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Details:
Clouds, clouds, clouds ... but got the few min of blue sky I was waiting for !
Venus was still enough far away from the Sun not to endanger the secondary mirror of my 12" LX200 GPS telescope equipped with a 20" long hood.
Time to uncover the scope, to Goto Venus, to find it in the finder (where it is easily visible) , to center it at the eyepiece, to place the PLA-Mx camera at main focus, to center it, to take out the camera and place the needed*** 1000nm IR filter, to focus at best the ondulating crescent no more than 5 sec were left to capture Venus at 30 fps with allready some coming clouds !
I then hoped another small hole of blue sky would appear now that everything was ready to shoot, but too bad none did before Venus setting time ...
Here is the result shown in the orientation it is seen in the sky, in those difficult conditions ...
NOTE : Be more and more careful if you want to reproduce this as a friend of mine got a previous year his telescope's secondary burnt by the Sun when trying ! In the next days illumination will decrease until 0.4% and then a very long hood and a refractor will be the best and safest instruments to use...
*** Without the 1000nm IR pass filter Venus is so bright that it is not possible to take any picture with the Pla-Mx even at 1/1000s and zero gain !
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