Forum Index > Full Moon Saloon > Saturn and Jupiter conjunction on December 21.
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Cyclopath
Faster than light



Joined: 20 Mar 2012
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Cyclopath
Faster than light
PostTue Dec 22, 2020 6:40 pm 
Cyclopath wrote:
https://solarsystem.nasa.gov/news/1615/how-to-photograph-the-conjunction-of-saturn-and-jupiter/ NASA says you can photograph four Jovian moons with a 200 mm lens.
For me this was much more interesting than the conjunction. I had no idea this could be possible. I just got some (not very good) practice photos with a 300 mm lens on a full frame body. Some things I noticed: * They look like one star to the naked eye but you can see the separation through the camera. * Jupiter shines. * The "rule of 600" applies; err faster instead of slower. With a 200 mm lens, keep the shutter speed below 3 seconds. With a 300 mm, 2 seconds. A 600 mm should be less than a second. * I wish I had a teleconverter. * The four visible moons of Jupiter are Io, Europa, Ganymede, and Callisto. These are the Galilean moons. * The moons are in a straight line. They're less crisp unless you use an even faster shutter speed which is very difficult. * Saturn's rings are not visible at 300 mm. frown.gif Obviously use a tripod.

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Cyclopath
Faster than light



Joined: 20 Mar 2012
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Location: Seattle
Cyclopath
Faster than light
PostTue Dec 22, 2020 9:23 pm 
These were the best I got. Jupiter and Saturn; Ganymede, Callisto, Europa, Io.

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Cyclopath
Faster than light



Joined: 20 Mar 2012
Posts: 7697 | TRs | Pics
Location: Seattle
Cyclopath
Faster than light
PostWed Dec 23, 2020 9:15 pm 
Just right of center near the horizon. Those lines above the water on the left are the Fauntleroy / Vashon Island ferry. ​​​​​​​
424B9511 - Conjunction
424B9511 - Conjunction

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zephyr
aka friendly hiker



Joined: 21 Jun 2009
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zephyr
aka friendly hiker
PostWed Dec 23, 2020 9:37 pm 
Cyclopath wrote:
These were the best I got. Jupiter and Saturn; Ganymede, Callisto, Europa, Io.
Amazing to see those little moons. ~z

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