Thread: no telescope
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Old 25-04-2016, 04:06 AM
poider (Peter)
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Join Date: Apr 2012
Location: Adelaide, Australia
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Quote:
Originally Posted by skysurfer View Post

But Jupiter ?

Well, Jupiter is angular 40" wide. A 150-600 at 600 is 2 degrees wide.
7200" / 4928 pixels (long size of a D7000 frame) = 1.46" per pixel, so Jupiter's sphere is displayed as a circle of 27 pixels, so when focused properly, the bands should be visible.
I took jupiter with sigma 150 - 600 f6.3 on many different settings, focused on live view with my reading glasses and a magnifying glass to get it as small as i could get it and after much trial and tribulation with exposures etc, I had about 20 shots ranging from being too bright right down to where i can barely make out the moons and i can not see any details even after playing with contrast and brightness in photoshop.
I must be doing something wrong
Peter
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