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Jupiter and Galilean moons.
Lens: SMC 400 mm manual Camera: K70 Photo Location: NW Tasmania. ISO: 3200 Shutter Speed: 2s Aperture: F6.3 
Posted By: Terry C, 04-11-2019, 07:34 PM

Good view of Jupiter tonight from my backyard.
Jupiter rose about 9.20pm. This image taken about 11 pm.
My basic equipment of a Pentax K70 with a 35 year old manual Pentax SMC 400mm lens. These old lenses tend to suffer from colour fringing when used on digital - - not easily reduced in editing. The four Galilean moons clearly in sight.
Single shot on tripod.

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04-11-2019, 07:52 PM - 1 Like   #2
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Showing home made bracket to better balance the set up when mounted on a tripod.
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04-11-2019, 08:15 PM   #3
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I'm impressed! Good work!
04-12-2019, 12:06 AM   #4
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Nice. Usually the contrast between super bright Jupiter and its much dimmer moons means that the planet gets blown out easily.

04-12-2019, 12:26 AM   #5
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When you actually think about what's involved that's a really great photo.
04-12-2019, 03:59 PM   #6
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Nice shot!

Given Jupiter's distance to the sun, the analog for the Earthly "Sunny f/16" rule of thumb for exposures of the planet would be the "Jovian f/3" rule. That exposure setting would also work for the Galilean moons but only for really long focal lengths that make the moons more than a pixel in diameter at the Earth-Jupiter distance (probably at least 1000 mm)
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