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



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Cyclopath
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Faster than light
PostTue Dec 22, 2020 5:40 pm 
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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
Posts: 4752 | TRs
Location: Seattle
Cyclopath
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Faster than light
PostTue Dec 22, 2020 8:23 pm 
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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: 4752 | TRs
Location: Seattle
Cyclopath
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Faster than light
PostWed Dec 23, 2020 8:15 pm 
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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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aka friendly hiker
PostWed Dec 23, 2020 8:37 pm 
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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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Forum Index > Full Moon Saloon > Saturn and Jupiter conjunction on December 21.
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