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FORUMS Photo Sharing & Visual Enjoyment Astronomy & Celestial 
Thread started 28 Dec 2008 (Sunday) 18:39
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MMJ Conjunction

 
Bernoulli
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Dec 28, 2008 18:39 |  #1

I missed the Moon-Venus-Jupiter conjunction last month, but here's tonight's Moon-Mercury-Jupiter conjunction. You can barely see a couple of Jupiter's moons.

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Celestron
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Dec 28, 2008 20:11 |  #2

Excellent image ! Job well done ! I did not know this conjunction was coming :( . You should send this in to www.spaceweather.com (external link) !




  
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Bernoulli
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Dec 28, 2008 20:14 as a reply to  @ Celestron's post |  #3

Celestron, I didn't know either. I got up from a nap and looked out the front window and there it was. Had to find the tripod real quick!

I'll look into the spaceweather.com site, I think you've been featured on there yourself, right?


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strgazr27
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Dec 28, 2008 20:16 as a reply to  @ Celestron's post |  #4

Beautiful image but at that Fl and exposure, Jupiters moons would not be visible. Again, a very well done image.


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Bernoulli
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Dec 28, 2008 20:32 |  #5

strgazr27 wrote in post #6960129 (external link)
Beautiful image but at that Fl and exposure, Jupiters moons would not be visible. Again, a very well done image.

I beg to differ. Here's a 100% crop from the image laid over the positions of the moons at the same time (not to the same scale). The smear in the image is due to the 4 second exposure. Io and Europa are probably grouped together.

Jupiter's Galilean moons would be almost naked eye objects if not for the big planet's glare, the big four have visible magnitudes between 5 and 6. They are easy objects for the camera if you have enough zoom to separate them from the planet's glare.

The spread between Callisto and Ganymede was about 10 arc minutes, about 1/3 the width of the full moon.


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Bernoulli
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Dec 28, 2008 21:29 as a reply to  @ Bernoulli's post |  #6

If everyone will forgive me for obsessing, let's fix that white balance and try this again. Isn't RAW great!


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Celestron
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Dec 28, 2008 21:48 |  #7

It is for some :( , i have a hard time working RAW :( . But i agree with you , i have taken lots of jupiter images at 2-secs with a 75-300mm @ 300mm on a tripod and captured all 4 moons but i have also caught at least 1 moon with my 18-55mm when the moons were in a good postion away from Jupiter .




  
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Adrena1in
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Dec 29, 2008 04:29 |  #8

This is why I often fire up www.neave.com/planetar​ium (external link) and scroll the time forward to check for upcoming conjunctions and stuff. Not sure how accurate it is mind, but it's close enough I'm sure.

Oh and bloomin' lovely image! :)


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Bernoulli
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Dec 29, 2008 12:39 as a reply to  @ Adrena1in's post |  #9

I'm not sure what really qualifies as a "conjunction" although that's what I called it. From the Moon to Jupiter was about 6.5 degrees which is quite a distance to me.

I think tonight the Moon will be well above Jupiter.

I'll check out neave.com to see what other photo ops are sneaking up on us.


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Celestron
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Dec 29, 2008 15:02 |  #10

Bernoulli wrote in post #6963655 (external link)
I'm not sure what really qualifies as a "conjunction" although that's what I called it. From the Moon to Jupiter was about 6.5 degrees which is quite a distance to me.

I think tonight the Moon will be well above Jupiter.

I'll check out neave.com to see what other photo ops are sneaking up on us.

What makes this one even more unique is it has Mercury and showing well i might add ! Thats another plus !




  
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Adrena1in
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Dec 29, 2008 16:22 |  #11

Definitely decided Neave isn't quite right, but it's close. It says that on January the 16th next year there's going to be a solar eclipse in the UK, but it won't be visible from here. Neave does do weird things sometimes, but hey, it's free.


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Bernoulli
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Dec 29, 2008 16:30 |  #12

Celestron wrote in post #6964474 (external link)
What makes this one even more unique is it has Mercury and showing well i might add ! Thats another plus !

When I looked out and saw it I thought it might be Mercury but time was short and I figured I'd better shoot first and ask questions later.

There are about a dozen stars visible in the original image, but you can only see a couple on this reduced and compressed version.


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Bernoulli
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Dec 29, 2008 19:46 as a reply to  @ Bernoulli's post |  #13

There are conjunctions everywhere it seems.

The first image is a wide shot of Venus taken from my deck. Sorry for the cock-eyed angle, I don't have a fancy motor mount.

The second image is a closeup of the first showing super-bright Venus and, a couple of degrees away, dim blue Neptune almost 5000 times dimmer. Once you know where it is, you can easily see it with binoculars.


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drevilsmom
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Dec 29, 2008 20:53 |  #14

So how far away will Neptune be from Venus tomorrow? I'd love to see that.


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Bernoulli
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Dec 29, 2008 22:59 as a reply to  @ drevilsmom's post |  #15

Venus is going up up up for a while. It passed closest to Neptune last Saturday, about 2 degrees away.

Next stop is Uranus, which is passes within about 1.8 degrees on Jan 22.

So just after sunset now you can see five planets at once with binoculars.


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MMJ Conjunction
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