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siriusc
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I observed an explosion on Jupiter this morning!
      #5413225 - 09/10/12 12:23 PM

Hi guys,

This morning (9/10/2012) at 11:35:30 UT, I observed a bright white two second long explosion just inside Jupiter's eastern limb, located at about Longitude 1 = 335, and Latitude = + 12 degrees north, inside the southern edge of the NEB. This flash appeared to be about 100 miles in diameter. I used my Meade 12" LX200 GPS telescope and a binoviewer working at 400X for the observation, seeing was very good at the time. I was thinking about imaging Jupiter this morning but decided to observe it instead, had I been imaging I'm sure I would have missed it between adjusting webcam settings and focusing each avi. We'll have to wait and see if a dark spot developes inside the southern regions of the NEB over the next day or two. Good luck imaging this. My best guess is that it was a small undetected comet that is now history, hopefully it will sign its name on Jupiter's cloud tops.

Best Regards and Clear Skies, Dan Petersen

Edited by siriusc (09/10/12 03:57 PM)


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WayneJ
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5413363 - 09/10/12 01:32 PM

Hi Dan,

You should write an observation report and send it to John Rogers at the BAA. If you can, show a sketch of the planet and where you observed the flash, along with accurate time and location data. John can alert other imagers who might have data from that time to check their raw data for confirmation.

http://www.britastro.org/jupiter/

If it was simply a small comet, it's unlikely that Jupiter will show any dents and scratches. The "transient" that Chris Go and Bird Wesley imaged back in 2010 didn't show any impact marks.

Regards,

Wayne


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shawnhar
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Re: I observed an explosion on Jupiter this morning! new [Re: WayneJ]
      #5413503 - 09/10/12 02:44 PM

Missed it by 4:00!!!! Dangit, I switched over to the moon before I quit imaging Jup this morning.

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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: shawnhar]
      #5413587 - 09/10/12 03:29 PM

Hi Wayne and Shawn:

Thanks for your replies.

Shawn, I wish you had captured it too, just one more avi and you probably would have.

It was an amazing sight to behold this pure white fireball erupting from Jupiter's NEB clouds. I observed the planet an hour and a half later in daylight hoping to detect a small dark spot near Jupiter's CM but could not see one. I will observe Jupiter tomorrow morning 2.5 hours earlier when this longitude of 335 (system 1) is near the central meridian once again. I will have my fingers crossed and hope there is an observable mark, if there is one I will be doing some high resolution imaging this time.

Clear Skies, Dan

Edited by siriusc (09/10/12 03:52 PM)


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PiotrM
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5413599 - 09/10/12 03:37 PM

It would have to be very very big object to leave an amateur-resolvable mark. Last two caught by amateurs (the Japanese one and Anthony one) did not leave such easy visible spots.

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Bird
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Re: I observed an explosion on Jupiter this morning! new [Re: PiotrM]
      #5413863 - 09/10/12 06:17 PM

What great news this is to find when I woke up this morning! That longitude will be visible here tomorrow morning so (fog permitting) I'll have a go at imaging it and see if anything is visible. I'm sure everyone else who can see that longitude will be doing the same.

1.5-2s sounds very similar to the two events in 2010 which didn't reach the cloud tops, but we can hope that this one went a bit deeper, that would be fabulous.

Nicely caught Dan!

cheers, Bird


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Mike Phillips
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Re: I observed an explosion on Jupiter this morning! new [Re: Bird]
      #5413921 - 09/10/12 06:53 PM

what a wonderful sight. I believe the east coast USA gets that same view again Tuesday AM!?

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GaryJCarter
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Re: I observed an explosion on Jupiter this morning! new [Re: Mike Phillips]
      #5414119 - 09/10/12 09:13 PM

It appears George Hall caught this on video....see http://georgeastro.weebly.com/uploads/1/3/3/4/13344093/jupiterimpact.jpg

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James W.
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Re: I observed an explosion on Jupiter this morning! new [Re: GaryJCarter]
      #5414140 - 09/10/12 09:24 PM

Mike - 4:53am EST, CM1 355 will be at the center. And to believe it's actually clear!!!!

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Sunspot
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Re: I observed an explosion on Jupiter this morning! new [Re: James W.]
      #5414193 - 09/10/12 09:46 PM

James and others,

Go for it and I hope there is something to see, but even if not it's still exciting to try.

Paul


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James W.
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Re: I observed an explosion on Jupiter this morning! new [Re: Sunspot]
      #5414274 - 09/10/12 10:22 PM

You never know! That's the fun part of it!

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geminijk
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Re: I observed an explosion on Jupiter this morning! new [Re: James W.]
      #5414355 - 09/10/12 11:45 PM

Awesome!

John


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Kecktastic
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5414423 - 09/11/12 12:49 AM

Awesome news Dan, down here in OZ we get an excellent view of that CM1 tomorrow morning, the seeing is predicted to be crook and Jup will only be at 32 degrees alt but at least it looks like it will be clear.

Cheers!!!!!!!
Trevor


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zAmbonii
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Re: I observed an explosion on Jupiter this morning! new [Re: Kecktastic]
      #5414439 - 09/11/12 01:15 AM

Saw this post earlier, but was busy setting up my deep space setup to see that it was confirmed and that the area will be visible in a few hours. I'm going to cut short my deep space stuff and try to get Jupiter when the area comes back around. Seeing is pretty decent outside so who knows . I've got about another hour before Jupiter clears the trees though....I have the C8 out cooling in preparation .

Will post what I see if I do see anything.

Kinda exciting!

I wonder how many people have taken images of the area yesterday because there should have been a several hours post impact before it rotated out of view. Would be interesting to see.


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zAmbonii
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Re: I observed an explosion on Jupiter this morning! new [Re: zAmbonii]
      #5414575 - 09/11/12 04:10 AM

Seeing is kind little below average, but so far, I can't see anything definitive. Nothing I can say that is a dark spot or a light spot so far. I'll post some images later on. It may take someone with better seeing and bigger scope to get more detail of the area.

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Freddy WILLEMS
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Re: I observed an explosion on Jupiter this morning! new [Re: zAmbonii]
      #5414589 - 09/11/12 04:44 AM

Go for it guys ....

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bunyon
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Re: I observed an explosion on Jupiter this morning! new [Re: Freddy WILLEMS]
      #5414605 - 09/11/12 05:17 AM

Seeing is a bit iffy but nothing obvious showing up in the live feed. Of course, it would have to be huge to show up in my live feed.

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zAmbonii
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Re: I observed an explosion on Jupiter this morning! new [Re: bunyon]
      #5414627 - 09/11/12 06:00 AM

OK...Im a slight bit skeptical on this, but I *might* be seeing something really small. Someone else with better seeing and bigger scope might get a better look. I'll post an animation to show ya in a bit.

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bunyon
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Re: I observed an explosion on Jupiter this morning! new [Re: zAmbonii]
      #5414647 - 09/11/12 06:32 AM Attachment (389 downloads)

I have a bigger scope. But probably not better seeing.

Here is a shot at 0955 UT. It isn't very good and I have no comparison to make with it. There are some marks around the equator, but I don't know if they were there previously or not.

CN giving me fits trying to upload. I'm going to give it a miss as it really isn't that great an image.

Edited by bunyon (09/11/12 06:38 AM)


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bunyon
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Re: I observed an explosion on Jupiter this morning! new [Re: zAmbonii]
      #5414653 - 09/11/12 06:41 AM Attachment (384 downloads)

I have a bigger scope. But probably not better seeing.

Here is a shot at 0955 UT. It isn't very good and I have no comparison to make with it. There are some marks around the equator, but I don't know if they were there previously or not.


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zAmbonii
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Re: I observed an explosion on Jupiter this morning! new [Re: bunyon]
      #5414670 - 09/11/12 07:01 AM

Ok here goes it. This is a stretch, but I am kinda itching to find something. The meridian position seems to be about right, but I think it is a bit South of where an impact should but....but who knows. I have plenty of other .avis, but I need to clear space on my hard drive and transfer them from my laptop so it may not be till this afternoon before I get to them

Here is a link to an animation with other images.

Also included the fireball image scaled and rotated to try and match my captures.

Here is my stretch:

Possible impact scar on Jupiter? 9/11/12 by zAmb0ni, on Flickr


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Jerre
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Re: I observed an explosion on Jupiter this morning! new [Re: zAmbonii]
      #5414703 - 09/11/12 07:32 AM

Perhaps analysing the images in JUPOS would give a clue

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Darren Drake
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Re: I observed an explosion on Jupiter this morning! new [Re: Jerre]
      #5414710 - 09/11/12 07:39 AM

An impact feature would likely be jet black and unmistakable. Doesn't look promising at this point but but's still fun looking. I didn't see anything interesting through my C8 in very good seeing.

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Mike Phillips
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Re: I observed an explosion on Jupiter this morning! new [Re: GaryJCarter]
      #5414726 - 09/11/12 07:49 AM

Quote:

It appears George Hall caught this on video....see http://georgeastro.weebly.com/uploads/1/3/3/4/13344093/jupiterimpact.jpg




Awesome I saw no marks this am in processed final


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bunyon
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Re: I observed an explosion on Jupiter this morning! new [Re: Mike Phillips]
      #5414755 - 09/11/12 08:29 AM

You'd have to have something clear that wasn't there yesterday, before the impact. I suspect lots of little niggly things hanging off the festoons between EBs could look like an impact under the right (or, rather, wrong) conditions.

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sfugardi
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Re: I observed an explosion on Jupiter this morning! new [Re: bunyon]
      #5415057 - 09/11/12 11:55 AM

Dan, congradulations on witnessing this rare event! I've got some above average conditions tonight and am hoping for some decent Jupiter data.

Regards,
Steve


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DesertRat
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Re: I observed an explosion on Jupiter this morning! new [Re: sfugardi]
      #5415108 - 09/11/12 12:20 PM

Indeed congratulations to Dan! The frequency of these events is quite interesting. Strange the Galileo orbiter never caught one in all the time it was there - but it did record the SL9 impact as it was approaching Jupiter.

Glenn


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CPellier
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Re: I observed an explosion on Jupiter this morning! new [Re: DesertRat]
      #5415143 - 09/11/12 12:39 PM

Dan, congratulations !

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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: CPellier]
      #5415446 - 09/11/12 02:48 PM Attachment (133 downloads)

Hi guys:

Here is a WinJupos computer simulation of where this unknown and previously undetected comet produced it's two second in duration and about a 100 mile wide fireball as it entered Jupiter's atmosphere at a velocity probably in excess of 20,000 feet per second. Had such an object hit our Earth it would have been a bad hair day to say the least. The large white mark on Jupiter's eastern limb is where the impact occurred.

Thanks to all for your time and kind words, and to Kyle Cudworth and the four other professional astronomers and staff at the Yerkes Observatory for helping me to report this interesting solar system event.

Best regards and cheers, Dan Petersen

Edited by siriusc (09/12/12 01:03 PM)


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clitherowclan
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5415476 - 09/11/12 03:03 PM

Is it just my old eyes or does the impact point in George Hall 's video frame look to be below the southern edge of the NEB rather than within it as shown in the WINJUPOS simulation. I just want to make sure I'm looking in the right place tonight.
Alan C.


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bunyon
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Re: I observed an explosion on Jupiter this morning! new [Re: clitherowclan]
      #5415479 - 09/11/12 03:05 PM

Yes, Alan, I see it in the video as between the two EBs.

Of course, I also spent five minutes trying to get that jpg to play.


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clitherowclan
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Re: I observed an explosion on Jupiter this morning! new [Re: bunyon]
      #5415502 - 09/11/12 03:16 PM

Me too, I just kept stabbing at that old play button until I finally realized it was a screen shot; Doh!
A C.


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zAmbonii
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Re: I observed an explosion on Jupiter this morning! new [Re: bunyon]
      #5415505 - 09/11/12 03:17 PM Attachment (93 downloads)

Yea, I was going to say that I have seen two images that say the impact was in the NEB, but when I did a comparison last night between my image aligned with the GRS, it looked to be in the middle of the EZ.

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Jason H.
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5415586 - 09/11/12 03:57 PM

Congrats Dan, I saw in spaceweather.com credit to you and a link to George Hall's 4 second video here

http://www.flickr.com/photos/19299984@N08/7976507568


Jason W. Higley


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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: Jason H.]
      #5415666 - 09/11/12 04:29 PM

Hi Jason:

Thanks for the information, I like your Mars avatar.

I hope to get down to Florida this winter and do some imaging. The Chiefland Astronomy Village is one of my favorite places in the Sunshine State. Their skies are so filled with stars that it takes your breath away, I envy all the friends I have living there.

Regards, Dan Petersen


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Jason H.
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5415683 - 09/11/12 04:37 PM

Hey Dan,

Thanks for the Mars avatar comment too (your encouragement years ago when I was a newbie on Amart also helped!)

BTW, that video is going viral! In a matter of minutes, it's gone up by thousands of hits! A news guy from Fox News just asked George Hall for an interview on the Flikr comments thread to do a story on it tonight. Hope they contact you too!

Also, you're welcome to stop in anytime if your in my neck of the woods (I'm just North of Orlando about 12 miles, although Chiefland's a bit of a drive from here, been there a couple of times, but if you come down by me you can PM me if you're in the area.) There's are some other nice dark sky locations south of here too (the campgrounds at Kissimmee Prairie Preserve, not near Kissimmee, but somewhat further south have really dark skies, and is Astronomy friendly too!

Jason W. Higley


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Freddy WILLEMS
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Re: I observed an explosion on Jupiter this morning! new [Re: Jason H.]
      #5415698 - 09/11/12 04:45 PM

Thanks zAmbonii for that .gif image ! Looks great.

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Sunspot
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Re: I observed an explosion on Jupiter this morning! new [Re: Jason H.]
      #5415817 - 09/11/12 05:57 PM

There is also a story about the impact on Space.com.

Paul


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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5415832 - 09/11/12 06:06 PM

Hello to everybody, worldwide!

Here is a first hand observation report of this event.

Looking through my telescope at 6:35am local time, about ten minutes after sunrise, I could see Jupiter's elliptical globe shining with a yellowish hue. The Great Red Spot was approaching Jupiter's meridian and displaying a beautiful salmon color and etched full of detail. Jup's enormous cloud belts and zones were lit up in high resolution from it's north pole all the way to it's southern one. Then, all of a sudden a brilliant pinpoint of blazing white light started to grow and brighten just inside Jupiter's morning limb, this was in stark contrast to the planets yellowish color, its shape was slightly elliptical in it's north/south axis and was about as bright in appearance as a 4th magnitude star. I couldn't help but smile when I saw what was happening, a one in a trillion sight I thought. Then, just as rapidly as it appeared it started to dim until another second had past and it was forever gone. I just sat there and remembered thinking how amazing and surreal this all seems and how fortunate I was to observe this celestial fireball. I kept observing hoping there would be more impacts, maybe much larger ones. I may have been the only person on Earth to view this spectacle. I thank the creator of heaven and earth for giving me this privilege, it was an awesome sight, one that I will remember for the rest of my life!

Cheers, enjoy the night sky! Dan Petersen

Edited by siriusc (09/11/12 06:11 PM)


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oneslowz28
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Re: I observed an explosion on Jupiter this morning! new [Re: Freddy WILLEMS]
      #5415908 - 09/11/12 06:48 PM

Congratulations on observing such a rare event!

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Eddgie
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5415932 - 09/11/12 06:59 PM

The video in the thread was shown tonight on National News.

Magnificent.

On an HD TV it was very clear that this was done by an amateur instrument.

The actual flash was too small to resolve, so the video showed it as an Airy Disk with broken diffraction rings

The diffraction ring scintillated exactly as you would see a star do because of seeing.

Fantastic video. I was not surprised at all to see that it was done by someone known to us...


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Freddy WILLEMS
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Re: I observed an explosion on Jupiter this morning! new [Re: oneslowz28]
      #5416162 - 09/11/12 09:16 PM

Congrats Dan,
Very nice report.
Job well done !


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AntMan1
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5416312 - 09/11/12 10:29 PM

You are the man! What a sight to see with your own eyes! or eye lol.

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jrbarnett
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5416981 - 09/12/12 10:22 AM

Congratulations on your discovery, Dan!

It's for events like this that we need a "popthecork" graemlin. You also received some excellent press on the National Geographic website.

However, on a more somber note, I regret to inform the CN community that under the IAU criteria a planet "must have cleared its orbit". As a consequence of your observation and Mr. Hall's video capture of the event, the IAU is convening an emergency session to downgrade Jupiter to "dwarf planet" status. A vociferous minority of planetary scientists, however, insist that this impact was the last little bit of debris that Jupiter needed to capture in order to clear its orbit, and they pinky-swear that there won't be another.

Kidding aside, GREAT WORK!

Regards,

Jim


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brianb11213
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Re: I observed an explosion on Jupiter this morning! new [Re: jrbarnett]
      #5417025 - 09/12/12 10:44 AM

Quote:

However, on a more somber note, I regret to inform the CN community that under the IAU criteria a planet "must have cleared its orbit". As a consequence of your observation and Mr. Hall's video capture of the event, the IAU is convening an emergency session to downgrade Jupiter to "dwarf planet" status. A vociferous minority of planetary scientists, however, insist that this impact was the last little bit of debris that Jupiter needed to capture in order to clear its orbit, and they pinky-swear that there won't be another.



Yeah, the Earth hasn't cleared its orbit either, it gets hit by meteors all the time ;-)


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Tanchistu
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Re: I observed an explosion on Jupiter this morning! new [Re: brianb11213]
      #5417107 - 09/12/12 11:34 AM

Great observation!!!

So this is the only video/photo of the event?

You mean to tell me there is no project to monitor Jupiter every second it is visible from somewhere on earth. That it's sad.


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Sunspot
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Re: I observed an explosion on Jupiter this morning! new [Re: Tanchistu]
      #5417146 - 09/12/12 11:52 AM

Sad maybe...but extremely expensive. That's why we amateurs are out here.

Paul

Quote:

Great observation!!!

So this is the only video/photo of the event?

You mean to tell me there is no project to monitor Jupiter every second it is visible from somewhere on earth. That it's sad.




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snork
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Re: I observed an explosion on Jupiter this morning! new [Re: Sunspot]
      #5417181 - 09/12/12 12:12 PM

Congratulations on a great catch! Would have loved to seen that as it happened.

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steveward53
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Re: I observed an explosion on Jupiter this morning! new [Re: Sunspot]
      #5417188 - 09/12/12 12:15 PM

How would an "impact" show as an out of focus Airey disc pattern in bad seeing on an 'in-focus shot of Jupiter ?

http://www.flickr.com/photos/19299984@N08/7976507568/


I'm standing up and calling foul on this video , prove me wrong please , but it's yet another sad Photoshop attention seeker.

I'm not saying something was not observed but this sure ain't footage of it ! Watch it frame by frame !

Steve.

Edited by steveward53 (09/12/12 12:36 PM)


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Tanchistu
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Re: I observed an explosion on Jupiter this morning! new [Re: steveward53]
      #5417218 - 09/12/12 12:32 PM

Quote:

How would an "impact" show as an out of focus Airey disc pattern in bad seeing on an 'in-focus shot of Jupiter ?

http://www.flickr.com/photos/19299984@N08/7976507568/


I'm standing up and calling foul on this video , prove me wrong please , but it's yet another sad Photoshop attention seeker.

I'm not saying something was not observred but this sure ain't footage of it ! Watch it frame by frame !

Steve.




NASA is very quiet about the event. That made me wonder.

Unlike 2009 and 2010.

I would not call this foul, but I will wait for further evidence.

Edited by Tanchistu (09/12/12 01:04 PM)


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MvZ
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Re: I observed an explosion on Jupiter this morning! new [Re: steveward53]
      #5417235 - 09/12/12 12:42 PM

Quote:

How would an "impact" show as an out of focus Airey disc pattern in bad seeing on an 'in-focus shot of Jupiter ?

... prove me wrong please....






??Seriously??

You can clearly see the impact flash is actually very much IN focus, and distorted as you would expect from less than perfect seeing ( http://www.damianpeach.com/pickering.htm , I would say the seeing is about 5-6/10). Looks exactly like the 2010 impact as recorded by both Chris Go and Anthony Wesley.

You are wrong. And I'm calling you the attention seeker

Edited by MvZ (09/12/12 12:43 PM)


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WayneJ
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Re: I observed an explosion on Jupiter this morning! new [Re: steveward53]
      #5417245 - 09/12/12 12:47 PM

Quote:

How would an "impact" show as an out of focus Airey disc pattern in bad seeing on an 'in-focus shot of Jupiter ?




Don't belittle the video just because you don't understand it. The video shows a fireball caused by an object far too small to resolve by a telescope from earth (probably <100m and likely in the 10m class of objects.) From this distance, the light flare from the fireball is a point-source that shows an airy pattern through a telescope.

I've viewed the video a number of times and it's completely consistent with the videos of fireballs on Jupiter shot by Christopher Go and Anthony Wesley (independently, but simultaneously) in 2010. In Chris', Bird's, and George's video, the airy pattern of an in-focus point-source of light is shown near Jupiter's limb with the expected light curve (brightening and fading). There's nothing fishy or suspicious about the video whatsoever.

Wayne


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Re: I observed an explosion on Jupiter this morning! new [Re: MvZ]
      #5417265 - 09/12/12 12:56 PM

As I said " prove me wrong" . It just doesn't look right to me however many times I watch it. .

Great piece of software by the way.

Steve.


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Re: I observed an explosion on Jupiter this morning! new [Re: steveward53]
      #5417280 - 09/12/12 01:06 PM

So what do you think it should look like?

JimC


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Re: I observed an explosion on Jupiter this morning! new [Re: Mirzam]
      #5417290 - 09/12/12 01:12 PM

>As I said " prove me wrong"

No, prove you are right. Other than the two exclamation marks you provided I can find no reason to doubt this video. Wayne clearly explained what the video is showing.


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Re: I observed an explosion on Jupiter this morning! new [Re: MvZ]
      #5417303 - 09/12/12 01:24 PM

OK , Apologies all round , having had a swift firm but polite education on Pickering http://www.damianpeach.com/pickering.htm
I now see that it is a perfectly good shot , I'm sorry for jumping in feet first but it just didn't look right somehow.

Large portion of Humble Pie on order.

Yours put firmly in his place ..

Steve.


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MvZ
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Re: I observed an explosion on Jupiter this morning! new [Re: steveward53]
      #5417308 - 09/12/12 01:28 PM

Hmmmm, pie!

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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: steveward53]
      #5417322 - 09/12/12 01:33 PM Attachment (100 downloads)

Hi Steve:

I have been a planetary observer for nearly 40 years and am a perfectionist. I witnessed this event first hand through a very high quality telescope ($4,000) and at a power of 400 times with near perfect seeing conditions and I'm saying that the fireball I saw did not seem to occur where this video indicates, the explosion I saw did not occur inside Jupiter's Equatorial Zone and it was not that close to Jupiter's morning limb, as I recall. I have gone through my notes from Monday morning and this simulated attachment (shown below) is as accurate as I am able to get as to where ground zero was for this impact event. This explosion did not show an airy disc through my telescope. I think that there could have been two impacts. I'm just trying to understand why our impact locations don't match up. I apologize to George for thinking that his video may be inaccurate, odds are far greater that a visual observation will be off slightly.

Best Regards and Clear Skies, Dan Petersen

Edited by siriusc (09/12/12 06:03 PM)


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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5417349 - 09/12/12 01:50 PM Attachment (98 downloads)

Hi,

Here is a photo of my September 10th observing setup, it includes my Orion binoviewer fitted with two Meade series 4000 zoom eyepieces, this is what I looked through to obtain the high resolution and high contrast view of Jupiter. The photo was taken this morning after I rolled away my movable observatory.

Cheers, Dan Petersen


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5417350 - 09/12/12 01:50 PM

Okay, I'll retract my kudos to the video's creator and limit them to Dan for now!

I was wondering about the video, too. Clearly an explosion wouldn't be in the shape of Mickey Mouse like that. (Zoom it.)

Regards,

Jim


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MvZ
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Re: I observed an explosion on Jupiter this morning! new [Re: jrbarnett]
      #5417362 - 09/12/12 01:58 PM

Again, there is nothing about the video itself that makes me think the video is fake.

The picture of your setup and the price of your telescope also does not prove the video is fake.

"Clearly an explosion wouldn't be in the shape of Mickey Mouse like that. (Zoom it.)"
Colimation is perhaps not perfect, but it can just as well be a seeing effect. It looks like a typical bright star point spread function. So no, it's NOT clearly a weird shape.

Here is a video showing the 2010 impact: http://www.youtube.com/watch?v=Yo6LHljBKW8

Edited by MvZ (09/12/12 02:48 PM)


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Re: I observed an explosion on Jupiter this morning! new [Re: MvZ]
      #5417532 - 09/12/12 03:39 PM

Unless someone can provide some evidence, calling the video a hoax is pretty strong tea.

As for it not meshing with your observation, Don, it's pretty close. By the video, which I am assuming is legitimate, both for argument and in reality, your dot is not far off of where the impact occured. Given that it was a bright point, with airy disk and all, for right at one second, I wouldn't suspect you could pinpoint it with precision. You would have to be focusing your attention on exactly that point and anticipating it to be as accurate as you're claiming.

Thus, we have your visual observation confirmed by the video. They're in pretty good agreement, given such a short burst observed visually.

If the video is not right then we have...your word that something happened. No marks, no other evidence, etc. I'm not saying nothing happened, but it becomes not at all clear what, if anything, you actually saw.


Again, perhaps the video is a hoax. But I would hope that before people jump on that bandwagon, someone comes up with something beyond "doesn't look like I think it should". Until that happens, I'm going to take the video as a real and that it is a confirmation of a fine visual observation by you.


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Re: I observed an explosion on Jupiter this morning! new [Re: bunyon]
      #5417557 - 09/12/12 03:51 PM

Well said, Paul. Another thing to consider is that if there is indeed a discrepancy between where Dan observed the object (from Wisconsin) and George imaged the object (from Texas) that there is a difference in the location relative to Jupiter due to parallax. This, however, would suggest that the phenomena was not actually AT Jupiter, but much closer to us, such as an iridium flare.

I'm not weighing in on that possibility, because I really don't feel like doing the math to determine; but I did want to point out a plausible explanation if, indeed, the imaged fireball is in a different location from where Dan observed it.

Regards,

Wayne


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Re: I observed an explosion on Jupiter this morning! new [Re: WayneJ]
      #5417570 - 09/12/12 03:57 PM

Another possibility is that there were two impactors, slightly separated in time. Is there a time stamp on the video?

JimC


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Re: I observed an explosion on Jupiter this morning! new [Re: Mirzam]
      #5417592 - 09/12/12 04:11 PM

Hi Jim:

You may have hit the nail on the head, there could very well have been two impactors?

Wayne:

I too considered your theory of an object that was closer to earth, this would indeed produce an image shift. What I saw was in or just above Jupiter's clouds, I have no doubt about this.

Take it easy guys, Dan

Edited by siriusc (09/13/12 11:03 AM)


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5417608 - 09/12/12 04:19 PM

Some Keck/alike NIR/SWIR images could solve the problem. If it's detectable then probably only in those long wavelengths on hight resolution.

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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5417665 - 09/12/12 04:52 PM

Quote:

Hi Jim:

You may have hit the nail on the head, there could very well have been two impactors?

Wayne:

I too considered your theory of an object closer to earth, that would produce an image shift. What I saw was definitely in Jupiter's clouds, I have no doubt about this.

Take it easy guys, Dan




The likelihood of two fireballs is nearly zero. With a single observation, there is absolutely no way that you can state that the fireball was on Jupiter or just in the line of sight. You made an important ans excellent observation. Don't oversell is by making definitive assertions that are scientifically unsupportable.

Larry


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Sunspot
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Re: I observed an explosion on Jupiter this morning! new [Re: PiotrM]
      #5417715 - 09/12/12 05:15 PM

Glenn Orton imaged the area in IR with a big boy in Hawaii and found no scaring. This reminds me so much of the one that Bird and Chris Go captured in 2010, even the impacts on the videos looked very similar. Heidi Hammel is prepared to point HST at Jupiter if there is reason to do so. I don't think there is any point in it though.

Paul


Quote:

Some Keck/alike NIR/SWIR images could solve the problem. If it's detectable then probably only in those long wavelengths on hight resolution.




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Re: I observed an explosion on Jupiter this morning! new [Re: Sunspot]
      #5417718 - 09/12/12 05:21 PM

I was referring to short and near infrared - wavelengths not available to CCDs and CMOS cameras - much longer than 1 micrometer.

Something similar to this:
http://phys.org/news/2010-11-jupiter-stripe.html
http://keckobservatory.org/news/europa_helps_astronomers_penetrate_jupiters_lost_belt/


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Re: I observed an explosion on Jupiter this morning! new [Re: Lsummers]
      #5417719 - 09/12/12 05:22 PM

Don't forget that a large gravity field commonly disrupts objects as they approach. Shoemaker-Levy-9 is a case in point, and look at how many crater chains occur on the Moon and other solar system bodies. Having two or more objects derived from a single parent body impact in a short period of time is by no means improbable.

http://en.wikipedia.org/wiki/Comet_Shoemaker%E2%80%93Levy_9

If one accepts the hypothesis that both observations are accurate and reflect two different bodies, the displacement in position may allow a rough orbit determination.

JimC


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Re: I observed an explosion on Jupiter this morning! new [Re: Lsummers]
      #5417733 - 09/12/12 05:28 PM

Playing with math and assuming Jupiter is in the far distance, I come up with an impact distance of approximately 100 million km.

Racine to Dallas = 1600km
parallax angle = approximately 3 arc seconds

I'm probably off (and at that distance, Jupiter can't really be assumed to be a stationary distant object) but that puts the distance to impact in, more or less, empty space. I'd put the odds of such an impact occuring directly between us and Jupiter at far below the odds of two impacts. Shoemaker-Levy 9, after all, gave a series of impacts. I'm not saying it's likely, but having a loose pile of rubble impact Jupiter isn't far fetched.

Still, I think the best, simplest, explanation is that the video shows the impact Don observed and an eye-witness account of a fleeting and unexpected event was off by a couple of arc seconds.

EDIT: Jim, was writing my post when yours went up. Yes, SL9 was exactly what I thought of, too.

Edited by bunyon (09/12/12 05:30 PM)


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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: Lsummers]
      #5417744 - 09/12/12 05:39 PM

Hi all:

If this object were closer to our Earth than Jupiter, then George's location which is well south of mine would position the light to the north of my reported position and not south of it as the video clearly shows, speaking geometrically this eliminates the posibility that it was located between our Earth and Jupiter.

Cheers, Dan

Edited by siriusc (09/12/12 06:09 PM)


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Sunspot
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Re: I observed an explosion on Jupiter this morning! new [Re: PiotrM]
      #5417804 - 09/12/12 06:16 PM

When Glenn images Jupiter with the IRTF, it's at 4.8 microns. He didn't say specifically, and hasn't pubished any images of the impact location yet but having seen a number of his recent IRTF images I'm betting he imaged the impact zone at that wavelength.

Paul


Quote:

I was referring to short and near infrared - wavelengths not available to CCDs and CMOS cameras - much longer than 1 micrometer.

Something similar to this:
http://phys.org/news/2010-11-jupiter-stripe.html
http://keckobservatory.org/news/europa_helps_astronomers_penetrate_jupiters_lost_belt/




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Re: I observed an explosion on Jupiter this morning! new [Re: Sunspot]
      #5417820 - 09/12/12 06:23 PM

Quote:

When Glenn images Jupiter with the IRTF, it's at 4.8 microns. He didn't say specifically, and hasn't pubished any images of the impact location yet but having seen a number of his recent IRTF images I'm betting he imaged the impact zone at that wavelength.




Nice equipment Images from it would be very interesting.


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Scanning4Comets
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Re: I observed an explosion on Jupiter this morning! new [Re: PiotrM]
      #5418487 - 09/13/12 01:14 AM

Most excellent !! I hope to see some kind of marking...I observed Jupiter yesterday morning and didn't see anything....hopefully I will next time! This is exciting!

Cheers,


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zAmbonii
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Re: I observed an explosion on Jupiter this morning! new [Re: Scanning4Comets]
      #5418493 - 09/13/12 01:20 AM

One of these days we will have someone spot an impact right when Jupiter is rising, say on the east coast of the US. Word will quickly get out and we'll have a fleet of amateur imagers on the ready to image and we'll get a nice timeline from impact till an impact scar is formed.

Can't wait till that happens and I hope that I'll be a part of it


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Re: I observed an explosion on Jupiter this morning! new [Re: zAmbonii]
      #5418553 - 09/13/12 04:01 AM

Nothing was detected on the IRTF images this morning September 12.

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Re: I observed an explosion on Jupiter this morning! new [Re: Freddy WILLEMS]
      #5418874 - 09/13/12 10:21 AM

Folks, I have known George Hall personally for years. He is a longtime member of the Texas Astronomical Society as well as our astrophotography group. He is a diligent planetary and lunar imager and a humble and unassuming person.

There is no hoax or fabrication in his capture.

I'm extremely pleased that he has been rewarded with such a unique event after so many nights and mornings spent at the scope. I'm sure he will be glad when all the attention dies down and he is left with the satisfaction of capturing this amazing event.


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Re: I observed an explosion on Jupiter this morning! new [Re: crosseyedcricket]
      #5418924 - 09/13/12 10:51 AM

I second David's defense of George here. I, too, have known him for many years. He is an excellent and diligent planetary imager. He also does photometry to produce exoplanet-transit light curves. He does this for the love of it, not for the fleeting fame that a hoaxter might enjoy.

He has shared what he imaged. Leave it at that and everyone is satisfied.


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Re: I observed an explosion on Jupiter this morning! new [Re: 3RFJeff]
      #5418967 - 09/13/12 11:14 AM

Amen with a capital A.

Quote:

I second David's defense of George here. I, too, have known him for many years. He is an excellent and diligent planetary imager. He also does photometry to produce exoplanet-transit light curves. He does this for the love of it, not for the fleeting fame that a hoaxter might enjoy.

He has shared what he imaged. Leave it at that and everyone is satisfied.




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Re: I observed an explosion on Jupiter this morning! new [Re: Sunspot]
      #5418986 - 09/13/12 11:25 AM

Beyond the fact that people know the fella that made the video, there is only like an hour between the time the post was made here about the observation and the time the video was posted on Flikr.... It is unreasonable to think it could have been faked that fast.

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Re: I observed an explosion on Jupiter this morning! new [Re: shawnhar]
      #5419051 - 09/13/12 12:09 PM

Hi George:

George Hall and I have been emailing each other since the day this event took place.

I take my hat off to you George. Without your love of the night sky and planetary imaging skills this Jovian explosion that I observed would never have made it past my eyes. Thanks to you, now the entire world has been able to witness and enjoy viewing it. I'm sure your video has helped inspire people both young and old to take an interest in astronomy and to look up at our magnificent night sky.

Enjoy the ride George, you definitely deserve it!!!

Best Regards and Clear Skies, Dan Petersen

Edited by siriusc (09/13/12 12:14 PM)


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lcd1080
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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5419230 - 09/13/12 01:38 PM

I believe that any difference between Dan's memory of the fireball location and George's actual image of that location can be reconciled through an appreciation of how quickly the fireball appeared and then disappeared in the Flickr video. If this event had lasted for 5 seconds and one were anticipating its occurrence it would be easier to form a memory and then write a note indicating the exact latitude and longitude of the impact area but the flash lasted for only a second and a half and was a totally unexpected event. Under those conditions a small variance in one's memory of the lat/long from from what is shown in an actual image is completely understandable, at least in my view. Recognition of an unexpected event takes a significant fraction of a second if not longer; during that time the mind is occupied with identification of what is happening more so than in forming a precise memory of where it's happening. That precise assessment of relative location occurs in the seconds following one's initial recognition.

Pete


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5419234 - 09/13/12 01:39 PM

Congrats on the observation Dan. It must be amazing to witness such an event at the EP.

Edited by ZielkeNightsky (09/13/12 03:50 PM)


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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: ZielkeNightsky]
      #5419444 - 09/13/12 03:45 PM

Hi Lars,

Yes, it was amazing! I can close my eyes right now and still see that tiny spot flaring up over Jupiter's morning limb, and the best part about it all is the video that keeps playing in my mind is in full color.

How is the weather in Denmark, nothing but severe clear I hope. You should have good views of Jupiter from there. Good luck imaging it this time around!

Best regards, Dan Petersen

Edited by siriusc (09/13/12 04:28 PM)


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5419771 - 09/13/12 07:07 PM

Congrats again to both Dan and George, it's a memory that will stay with you forever.

I'm curious about how much coverage you each have of Jupiter, before and after the event that you each witnessed. George - can you tell us how much video coverage you have (say 5 mins before and after?), and have you scanned through all that footage looking for extra flashes? I'm sure you have, but if not - would be a very good idea.

Dan, same question to you - how much observation time did you have , say 5 mins before and after your observed flash?

It is extremely unlikely that there were two separate flashes, but we should look at the combined coverage to see if there was a window of opportunity.

cheers, Bird


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Re: I observed an explosion on Jupiter this morning! new [Re: Bird]
      #5420485 - 09/14/12 06:51 AM

Congrats Dan, it looks like the Media wants your story !

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ZielkeNightsky
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Re: I observed an explosion on Jupiter this morning! new [Re: Freddy WILLEMS]
      #5420557 - 09/14/12 08:39 AM

Dan, the weather here is really bad. I can't remember a year when it's been so cloudy and wet.

So that's why I'm at the moment is doing all my planetary work observing CN


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Re: I observed an explosion on Jupiter this morning! new [Re: Freddy WILLEMS]
      #5421256 - 09/14/12 04:46 PM

Thanks Anthony and Freddy for your congratulations.

Yes Freddy, it has been interesting! A couple of minutes ago I just turned down another interview, this one was a TV reporter from KSTP in St. Paul, Minnesota. The chief editor of Sky & Telescope wanted an interview too, I just referred her to this forum post for information about my Jupiter impact observation. I didn't do anything to deserve to be put on TV or in a magazine. What does it say in the bible, The heavens declare the glory of God. He deserves the credit for everything that is up there. Each clear night I look up and enjoy the grandest show of all!

Best Regards, Dan Petersen

Edited by siriusc (09/15/12 01:19 PM)


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5422200 - 09/15/12 11:22 AM

My congrats also to both Dan and George. Next time please let it have an impact scar we can all enjoy.

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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5422654 - 09/15/12 05:16 PM Attachment (81 downloads)

Dan, what an exciting observation. Congratulations. Also, an excellent scope. I have one like that too. When you made your observation, did you also see the white spot in NEB with which the mark you placed on the image in your last post is partially overlapping? I am taking the liberty of indicating this spot with an arrow on an enlarged portion of your image here. (In the image the spot looks gray but in a large aperture in good seeing - such as in my 16 this Tuesday morning - it is bright white just like the smaller one to its upper right in the NEB.)

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Re: I observed an explosion on Jupiter this morning! new [Re: IVM]
      #5422774 - 09/15/12 07:02 PM

IVM, the image that Dan has used here is a simulation from WinJupos, apart from the GRS I would not expect any of the features shown in this image to correspond to how Jupiter actually appears at the moment. Jupiter changes in major ways every few months.

I'm sure he used this image only to show the approximate (relative) location of the event that he witnessed, we can't take this image too literally.

Compare this image to the many other images being posted of Jupiter and you'll see this for yourself.

cheers, Bird


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Re: I observed an explosion on Jupiter this morning! new [Re: Bird]
      #5422815 - 09/15/12 07:29 PM

Bird, the position and size of the spot (some may prefer the more technical term "nodule") relative to GRS are where they are now - as I saw them visually just this week, on Tuesday morning and on Thursday morning. Otherwise I wouldn't be re-using this image to ask my question. As I said the large one is now visually white and not gray as in this image, but I can't tell if this is due to any real change since the image was taken or to the image processing and different spectral sensitivity of the camera relative to my eye. It is important to my question though that the large spot is (currently) visually bright white in a large telescope.

EDIT: I have looked at the current (this week's) images as you suggested. Those I saw did not represent the visual appearance of the two nodules very well - the size of the large one or even the fact that there are two close together. The image Dan used is in comparison correct apart from the insufficient brightness of the larger nodule.


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Re: I observed an explosion on Jupiter this morning! new [Re: IVM]
      #5422914 - 09/15/12 08:39 PM

Quote:

EDIT: I have looked at the current (this week's) images as you suggested. Those I saw did not represent the visual appearance of the two nodules very well - the size of the large one or even the fact that there are two close together. The image Dan used is in comparison correct apart from the insufficient brightness of the larger nodule.




The image you're using as a "reference" is many years old (about 11 actually, as it is a texture created from a mosaic of Cassini images taken during its fly-by) and completely unrepresentative of Jupiter's present appearance. The spots in that image disappeared many years ago and new nodules have reformed, become streaks, and dissipated many times since then.

Here's an image showing a number of views of the region where the fireball was sighted (so they would include the region with the bright spots.)



and a link to the full-sized image

http://spaceweather.com/images2012/12sep12/nodebris.jpg

Finally, here is an excerpt from an email exchange I had with John Rogers, Jupiter Section Chair for the British Astronomical Association, this week on the subject of the bright spots in the NEB:

Quote:

(Regarding the bright spots) There were none until late August, then three were prominent in hi-res images on Aug.29, expanding into cute little rifts by Sep.1, but I haven't been following them since. Your message suggests that they are coming and going rather rapidly and perhaps proliferating. I think they represent the return of normal activity in the NEB as it settles down after the Revival, but only further obs'ns will tell, as Jupiter has not been in this situation for nearly a hundred years!




In other words, John's impression is that the white spots are the return to the normal activity in the NEB.

Regards,

Wayne


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Re: I observed an explosion on Jupiter this morning! new [Re: WayneJ]
      #5422954 - 09/15/12 09:05 PM

Thanks, Wayne. Indeed I see the difference now with the WinJupos image in the position and order of the spots, and these are excellent images that show the spots in question very well. The large spot I meant is visible in all your images and is on the meridian in the middle image, near the S edge of NEB. It it distinctly off-round, just like I saw it this week with my 16". The shape is important, cf. the fireball description.

So the question I had to Dan stands, with this better illustration. Was the large white spot in NEB within a few arcsec from the location of the flash (probably overlapping with it) seen during the observing session?


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Re: I observed an explosion on Jupiter this morning! new [Re: Ziggy943]
      #5425543 - 09/17/12 02:20 PM

Hi Ziggy:

Thanks for the congratulations.

I see you own an Alvan Clark 9" refractor, awesome! We're driving over to Yerkes Observatory in a few days to view his (115 year old) 40 inch masterpiece!

Clear Skies, Dan

Edited by siriusc (09/17/12 03:27 PM)


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Re: I observed an explosion on Jupiter this morning! new [Re: IVM]
      #5425640 - 09/17/12 03:12 PM Attachment (87 downloads)

Thanks, IVM.

In answer to your question: There were "no" white spots observed in the southern regions of the NEB at the time of impact. The huge bright white spiral outbreak currently visible in this region was still lost inside Jupiter's dark morning haze. I captured this image saturday September 15th, at 11:22 UT, it shows the NEB spiral near Jupiter's CM and close to where the explosion occurred monday morning.

Cheers, Dan

P.S. I see it's snowing CO2 on Mars, how cool is that!

Edited by siriusc (09/20/12 11:42 AM)


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5426188 - 09/17/12 08:38 PM

Dan, thank you for the detailed response. Since the position of the large white spiral ("nodule") is close to the flash you saw, and since the spiral as such was not visible at the time of the observation, do you consider it possible that a transient appearance of this spiral/nodule through the seeing was the flash you saw?

I heard there was some unfriendliness on the internet about your observation... That is a shame, and let me assure you I am not one of those people, whoever they might be. I am a visual observer greatly intrigued by what you saw and wanting more details about the observation. And that naturally includes how the other potentially relevant surface features looked, and what the seeing was like exactly, in terms of the steadiness of these relevant features. Hence the question; no other motive. Visually details usually appear abruptly with a momentary change in seeing, and depending on the exact seeing conditions and the length of the observation certain planet surface features may appear only once during the observing session. Hence the question I am asking above. I admire the precision with which you were able to pinpoint the location of the flash, by the way!


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Re: I observed an explosion on Jupiter this morning! new [Re: IVM]
      #5427351 - 09/18/12 12:58 PM

Hi IVM:

My local seeing on the morning of September 10th, was fluctuating between 7/10 and 9/10. When the explosion happened conditions were excellent, I was very fortunate and had a crystal clear view of this massive explosion. I used my binocular viewer working at a power of 400X, I could have doubled it to 800X. This setup along with an adjustable observing chair allows me to study a planet for up to three hours at a time. I've been observing the planet Jupiter for 38 years now and never viewed anything like this before, it left me speechless!

Cheers, Dan


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5427835 - 09/18/12 05:05 PM

Thank you for this additional info, Dan. Keep watching that amazing planet!

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Re: I observed an explosion on Jupiter this morning! new [Re: IVM]
      #5437928 - 09/24/12 11:46 AM

Hi Guys,

Here is the latest update from just two hours ago...

http://phys.org/news/2012-09-explosion-jupiter.html

Cheers, Dan


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5465690 - 10/11/12 05:07 PM

Amazing sight, Dan. And better yet... thanks for sharing it with us all.

I haven't been posting much, 1 because i've had some health issues all summer, not to mention all the slack i tend to catch for posting ideas *shrugs* & 2...getting out of the hospital (28th of sept. plus a 10 'day stay') i was very eager to grab my tele-toy & gander upon the night sky... after nearly 2 weeks of Moon gazing, i step away from the eye piece (give my eyes some rest) continue to see what i see around 0ur Moon, and happen to catch something all sorts of fuzzy in my periphery vision thinking it was another comet(!) i get all sort's of giddy swing my tele-toy in that direction, start focusing on what i think is it's tail, only to finally find Pluto, spinning out of control!

I'm not attempting to swing this post elsewhere, That is an amazing sight to share. A couple nights prior, i thought i again seen objects breaking into much small pieces heading towards our gas-giant Jupiter. however it was quite cold that night, not to mention my line of sight, had me at nearly at a 90 degree angle to center Jupiter in my eyepiece. so i wasn't about to make another attempt to convince...

Thanks again, & Clear skies to everyone


-- seized


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Re: I observed an explosion on Jupiter this morning! new [Re: ages0ne]
      #5465786 - 10/11/12 06:32 PM

Quote:

so i wasn't about to make another attempt to convince...







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Re: I observed an explosion on Jupiter this morning! new [Re: ages0ne]
      #5467070 - 10/12/12 04:45 PM

Hi Aaron,

I'm glad you're back into the swing of things. The reason I placed my observational post here was to alert fellow imagers, knowing that they would gather far more useful data by imaging the impact site than could observers. I've been out the last several mornings observing and capturing videos of Jupiter, with no explosions detected. I'm sure it won't be long before someone reports and hopefully records another fireball on Jupiter. Estimates of the September 10th, 2012 impact was that it may have been about 50% more energetic than the 2010 impacts, that would place its size and weight at approximately 13 meters (40 feet) and 2000 tons! But the real numbers won't be out for quite some time. I would like to see George Hall video record some first and second magnitude stars using the same settings and optical components and then compare their brightness to his original screenshot image, in order to determine the exact magnitude of this most recent explosion on Jupiter.

Clear skies and cheers, Dan

Edited by siriusc (10/15/12 11:21 AM)


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5469173 - 10/14/12 12:25 AM

Quote:

Thanks Anthony and Freddy for your congratulations.

Yes Freddy, it has been interesting! A couple of minutes ago I just turned down another interview, this one was a TV reporter from KSTP in St. Paul, Minnesota. The chief editor of Sky & Telescope wanted an interview too, I just referred her to this forum post for information about my Jupiter impact observation. I didn't do anything to deserve to be put on TV or in a magazine. What does it say in the bible, The heavens declare the glory of God. He deserves the credit for everything that is up there. Each clear night I look up and enjoy the grandest show of all!

Best Regards, Dan Petersen





Wow!! Your humility is inspiring!! again, great catch! i'd love to hear more about the idea of closing your eyes to see this, event as it 'happened'. Clear skies to you ALL!

-- humbled


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Re: I observed an explosion on Jupiter this morning! new [Re: ages0ne]
      #5470371 - 10/14/12 07:13 PM

Quote:

i was very eager to grab my tele-toy & gander upon the night sky... start focusing on what i think is it's tail, only to finally find Pluto, spinning out of control!

I'm not attempting to swing this post elsewhere, That is an amazing sight to share. A couple nights prior, i thought i again seen objects breaking into much small pieces heading towards our gas-giant Jupiter. however it was quite cold that night, not to mention my line of sight, had me at nearly at a 90 degree angle to center Jupiter in my eyepiece. so i wasn't about to make another attempt to convince...

Thanks again, & Clear skies to everyone


-- seized





OK, you outdid Stanislas.

Pete


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siriusc
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Re: I observed an explosion on Jupiter this morning! new [Re: ages0ne]
      #5545807 - 11/29/12 04:29 PM Attachment (51 downloads)

Hi Guys,

Here is the final image obtained from George Hall's September 10th, video. George used an Astronomik L-RGB type 2c Red filter to record Jupiter and the fireball. The image was professionally processed by Ricardo Hueso Alonso of Bilbao, SPAIN. The right image was taken by Glenn Orton the next day using the infrared IRTF telescope in Hawaii, Glenn was searching for a debris cloud, none was detected.

Please hit the attachment tab to see Ricardo's original image scale of Jupiter.

Clear skies, Dan

Edited by siriusc (11/29/12 04:38 PM)


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5545831 - 11/29/12 04:48 PM Attachment (41 downloads)

Hi,

The recorded fireball flash does not look very large when compared to Jupiter but when you place our Earth next to it you can't help but be amazed at it's apparent size! When I observed this impact on the morning of September 10th, I estimated and reported its size to be about 100 miles in diameter, this number is probably closer to the actual blast zone size with the visible flash measuring less than this. The estimation was very difficult to do with only a two second window of opportunity.

Best wishes to you and your loved ones during the month of December and I hope everybody has a very HAPPY NEW YEAR!!!

Regards, Dan

Edited by siriusc (11/30/12 04:26 PM)


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Re: I observed an explosion on Jupiter this morning! new [Re: siriusc]
      #5546755 - 11/30/12 07:52 AM

Please remember that the fireball wasn't actually as big as it appears to be in this image. You are clearly seeing a diffraction effect, the telescope simply can not resolve details smaller. If you look closely you can see (part of) the first diffraction ring (distorted by the seeing a bit, so it is not symmetrical).

Every bright point source objects will look like this.

It was however a very bright flash, so even if in fact it was much much smaller that it appears here, it could clearly be detected.

So in short, your comparison does not make even a tiny bit of sense.

Edited by MvZ (11/30/12 07:55 AM)


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