HST captures Ganymede occultation by Jupiter.

3488 · Dec 19, 2008

WOW, just absolutely incredible. Ganymede Peek A Boo behind Jupiter. From Hubblesite, more amazing stuff. Andrew Brown.  <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

silylene · Dec 19, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>WOW, just absolutely incredible. Ganymede Peek A Boo behind Jupiter. From Hubblesite, more amazing stuff. Andrew Brown.  Posted by 3488</DIV> Those are pretty images.If you look closely at the set of Hubble images, the resolution/clarity seems to vary from photo to photo.  Odd maybe, since there is not atmospheric blur. <div class="Discussion_UserSignature"> petet = silylenePlease, please give me my handle back ! </div>

3488 · Dec 19, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>Those are pretty images.If you look closely at the set of Hubble images, the resolution/clarity seems to vary from photo to photo.  Odd maybe, since there is not atmospheric blur. Posted by petet</DIV>That's very true Silylene, but I wonder if it's due to differing filters? Would be great to get to see the other three Galileans do likewise & get some updated Io observations since New Horizons to get a handle on the volcanic activity. Jupiter appears too close to the Sun right now, perhaps something for next year, in August around opposition?Movie of Ganymede slipping behind Jupiter as seen by HST. Andrew Brown.  <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Dec 22, 2008

Emily Lakdawalla weblog of Ganymede occultation by Jupiter.Interesting point was raised that a good spectra was obtained as Ganymede slipped behind Jupiter, that the reflected sunlight from Ganymede passed through Jupiter's atmosphere.Ganymede being so large (in fact slightly larger than Mercury), only a part of Ganymede's disk was behind Jupiter's atmosphere, so the spectra contains Ganymede's own spectra, Ganymede's surface though Jove's atmosphere & Jove himself. Interesting. Will be interesting to see the results.I really hope Hubble will do the same with the other Galileans.Andrew Brown.  <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

3488 · Dec 24, 2008

I have cropped out the Setting Ganymede behind Jupiter's stormy limb. Timing 22:17 HRS - 22:22 HRS UTC, Wednesday 19th January 2005. It is something that seems somewhat familiar with our own moon setting, but this is truly alien & remarkable.Final Four panels of Ganymede setting behind Jupiter's limb. <img src="http://sitelife.space.com/ver1.0/Content/images/store/2/3/623d020d-884d-4581-93d0-e8cce2e11836.Medium.jpg" alt="" />I've even been able to identify a few of the surface features on Ganymede's surface, not bad for a telescope in Earth orbit.I've cropped & enlarged Ganymede from the Monday 9th April 2007 image below. <img src="http://sitelife.space.com/ver1.0/Content/images/store/8/14/a821ecb9-9585-4137-beab-440f048182b8.Medium.jpg" alt="" /> My effort Ganymede annotated. <img src="http://sitelife.space.com/ver1.0/Content/images/store/5/6/6526ba3f-1a36-487d-86f1-24dc1327f70b.Medium.jpg" alt="" /> Andrew Brown.  <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

dragon04 · Dec 30, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'>I have cropped out the Setting Ganymede behind Jupiter's stormy limb. Timing 22:17 HRS - 22:22 HRS UTC, Wednesday 19th January 2005. It is something that seems somewhat familiar with our own moon setting, but this is truly alien & remarkable.Final Four panels of Ganymede setting behind Jupiter's limb. I've even been able to identify a few of the surface features on Ganymede's surface, not bad for a telescope in Earth orbit.I've cropped & enlarged Ganymede from the Monday 9th April 2007 image below. My effort Ganymede annotated. Andrew Brown.  Posted by 3488</DIV> I guess I'll never quit being amazed... That picture was taken at a distance of 400,000,000 miles. It looks like you're in orbit of Jupiter looking at it. <div class="Discussion_UserSignature"> "2012.. Year of the Dragon!! Get on the Dragon Wagon!". </div>

3488 · Dec 31, 2008

Replying to: <DIV CLASS='Discussion_PostQuote'> I guess I'll never quit being amazed... That picture was taken at a distance of 400,000,000 miles. It looks like you're in orbit of Jupiter looking at it. Posted by dragon04</DIV>Very true, until fairly recently, well 1990, it WAS only possible from a spacecraft within the Jovian system. These are just incredible observations.Also out of curiosity I did an all sky view from the centre of the Jupiter facing side of Ganymede @ 00:00 UTC on the stroke of New Year's Day 2009.View of Jupiter from Ganymede @ 00:00 UTC Thursday 1st January 2009. Happy New Year everone & all the best for 2009.Andrew Brown.  <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

MeteorWayne · Jan 1, 2009

Replying to: <DIV CLASS='Discussion_PostQuote'>Those are pretty images.If you look closely at the set of Hubble images, the resolution/clarity seems to vary from photo to photo.  Odd maybe, since there is not atmospheric blur. Posted by petet</DIV>Yes, if you look at the rawimages F250 is fuzzier than the higher numbers.http://imgsrc.hubblesite.org/hu/db/images/hs-2008-42-d-web_print.jpg <div class="Discussion_UserSignature"> But the Krell forgot one thing John. Monsters. Monsters from the Id. I really, really, really, really miss the "first unread post" function </div>

3488 · Jan 1, 2009

Replying to: <DIV CLASS='Discussion_PostQuote'>Yes, if you look at the rawimages F250 is fuzzier than the higher numbers.http://imgsrc.hubblesite.org/hu/db/images/hs-2008-42-d-web_print.jpg Posted by MeteorWayne</DIV>Hi Wayne, Yes, most definitely. I still reckon it's due to the filter used.Andrew Brown. <div class="Discussion_UserSignature"> "I suddenly noticed an anomaly to the left of Io, just off the rim of that world. It was extremely large with respect to the overall size of Io and crescent shaped. It seemed unbelievable that something that big had not been visible before". Linda Morabito on discovering that the Jupiter moon Io was volcanically active. Friday 9th March 1979.http://www.launchphotography.com/ http://anthmartian.googlepages.com/thisislandearthhttp://web.me.com/meridianijournal </div>

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