October 1, 2009 on 10:28 am | In Jupiter, Planets, Uncategorized | Comments Off
Tonight was the night with the best seeing conditions of the year so far. Transparency and seeing was well above normal altough it could have been better. I made imags over a period of 45 minutes with the Williams Optics barlow. these images have been used in the animation (middle thumbnail). Two of them are shown as individual composites (bottom two thumbnails). I than made two images using the Celestron 2x barlow, which gives a longer focal ratio. I had to stop the exposure speed to 1/19 sec. and limit the number of frames to have sufficient light for a good histogram and to limit the rotation blur of the planet (top thumbnail)
Here the images from the evening of September 30th, (October 1 UT)
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