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Jupiter 9-19-09, 830pm EST

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#1 jayscheuerle

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Posted 19 September 2009 - 08:46 PM

Much bigger sketch this time, around 6" across. Tried to capture the natural feel. - j

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#2 perfessor

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Posted 19 September 2009 - 09:00 PM

Wow Jay, that's awesome.

#3 joec33

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Posted 19 September 2009 - 10:39 PM

Nice!! I never saw a trasit before and tonight I happened to take a look at Jupiter and when I saw a black spot I thought another rock smacked into the planet!! Your beautiful sketch looks just like what I saw too! Great job jayscheuerle!!

#4 jayscheuerle

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Posted 20 September 2009 - 12:20 AM

I may as well toss the biggie up here too. This was a lot of fun and my Skywatcher 120ED is turning out to be a fine little scope. Unfortunately, it's now apparent that I have a giant floater right in the middle of my FOV. I wasn't even sure that it was a transit shadow at first! - j

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#5 CarlosEH

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Posted 20 September 2009 - 02:00 AM

Jay,

An outstanding observation of Jupiter and shadow transit of a Galilean satellite. The bands and zones are well recorded. The Great Red Spot (GRS) is recorded as a pale salmon-colored version of itself as it currently exhibits. Your Skywatcher 120ED refractor does appear to be a good instrument for the planets. Thank you for sharing it with us all.

I look forward to your future observations.

Carlos

#6 jayscheuerle

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Posted 20 September 2009 - 08:49 AM

Thanks for the replies.

It's funny, but I'm assuming the moon that casted the shadow was there somewhere, but I sure couldn't see it. It's nice to check the imaging forum later and see if there's a shot around the same time that would show me how close I was. I'm realizing how fast the planet rotates, needing to add the positions of features first, and then detail them from left to right before the left side has rotated away! - j

#7 kraterkid

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Posted 20 September 2009 - 10:55 AM

Superb sketch Jay! :bow: :rainbow: :bow:

Rich

#8 frank5817

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Posted 20 September 2009 - 12:57 PM

Jay,

Just beautiful. Very clean sketch.

Frank :)

#9 kevin M13

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Posted 20 September 2009 - 04:22 PM

Impressive observing. I can't see nearly that much stuff. :(

Clear skies,
Kevin

#10 Tommy5

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Posted 20 September 2009 - 10:59 PM

Very nice sketch great use of color bravo!.

#11 Jeff Young

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Posted 21 September 2009 - 11:24 AM

Wonderful sketch, Jay.

The moons themselves can indeed be very hard to see against the planet's disk. I think you need exceptional seeing unless they're silhouetted against one of the darker bands.

-- Jeff.

#12 ladip63

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Posted 21 September 2009 - 03:58 PM

WOW!!! That doesn't even look a sketch. I hope I can sketch like that one day. Great job!!!

Lynn

#13 CarlosEH

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Posted 21 September 2009 - 05:44 PM

Jay,

As Jeff points out above, the detection of the Galilean satellites is not always easy. It depends what portion of the jovian atmosphere the satellite is transiting at the moment (e.g. Bright band vs. dark belt), but in general it is usually not detectable.

I have provided an image obtained from Starry Night that shows where the disk of Io and it's shadow were located at the time of your observation. Io is rather bright and it would have been difficult to detect at the time of your observation.

I look forward to your future observations.

Carlos

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