|
Bird
Post Laureate
Reged: 08/07/03
Posts: 3150
Loc: Canberra, Australia
|
|
All,
We're looking for close pre-impact images to narrow down the window as far as possible... thanks heaps to Paul Rix for letting me reprocess one of his images we can now say that the impact likely happened between 0615Z and 1400Z on the 19th.
The impact location would still likely be visible for at least another hour after his image was taken, so if anyone has data from around that time please go look :-)
Here is Pauls pre-impact image showing that the impact site is not present (I hope it's ok with you Paul for me posting this image, let me know).
To compare this image and see how visible the impact site would be, please check out the japanese images linked near the bottom of jupiter.samba.org. Even in poor seeing the site should be clearly visible.
cheers, Bird
--------------------
Deep Sky Optics 13.1" f/5.5 newtonian,
PGR Dragonfly Express, PGR Dragonfly 2
RedHat Linux + Coriander
http://www.acquerra.com.au/astro/
Edited by Bird (07/24/09 03:00 AM)
|
Paul Rix
Post Laureate
Reged: 11/06/04
Posts: 3349
|
|
Nice job on the reprocessing Anthony  . I only wish my imaging skills were better (as well as the seeing).
After I took the data for the above image I dropped down to F10 and took this one at 0645 UTC. Smaller but sharper and still no evidence I can see of the impact mark..
|
janehoustonjones
sage
Reged: 10/21/07
Posts: 458
Loc: 34 N 118 W, 637.0 feet
|
|
I was observing Jupiter visually at 05:45 - until about 07:10 UT Saturday night/Sunday morning at a public star party Warner Springs Ranch CA. 33N -116W 3,000 feet elev.
Definitely did not see the impact mark in either my 12.5 inch reflector @200x or a friend's C8 at 400x. My view matches Paul's - with Io emerging.
Having a Dark Mark Star Party at midnight Saturday at our house. Imaging (C8) and visual (our AP180):-)
--------------------
Jane Houston Jones
NASA JPL What's Up for March? Saturn Opposition & asteroid 21 Lutetia
NEW JPL feature: Two Asteroids, Two Planets, One Lion Visible in the Eastern Sky
|
KYSkys
member
Reged: 12/25/07
Posts: 10
Loc: Northern Kentucky
|
|
I know I don’t have a photo but this seemed to be the best thread to put this.
Ok, here’s my story for what it’s worth. I was observing on Friday July 17th and I was using Jupiter to locate Neptune. At some time between 12:00 to 1:30 AM (ET – morning Saturday July 18th) I was looking at Jupiter and I thought I saw (averted vision) a “streak” (like a small meteorite burning up in Earth’s atmosphere – a very fast, thread thin straight white line), it seemed to disappear behind the planet. At the time I even said to myself “ that was strange, did I really see something?” but I thought if I really did see something then I would read about it. I didn’t get too excited because I wasn’t sure I actually saw it – I’m the kind of person that needs to see something directly and even then I question it.
I was using a Celestron C8 with a 40mm eyepiece and diagonal - (wide field). Three of Jupiter’s moons were to the upper right (2 o’clock) and one was to the lower left (8 o’clock) and what I saw was coming in from the top left (11 o’clock).
So here are my questions:
1)I’m confused about North / South in reference to Jupiter so I’m not sure if what I described is in the same palace as the impact location - Anthony Wesley’s photos would make sense but the Hubble photo is opposite, which one is the way you would see it with the naked eye and which is the way you’d see it through a reflector with a diagonal?
2)Would a meteor be visible as it approached the planet – like I said I thought I saw a quick white streak, how could a meteor give off light when it would still be in space.
3)Could a comet or meteor move that fast? I’m zoomed way out to see Jupiter and it’s moons so the distance would be significant.
4)Could a very fast small object hit Jupiter and not leave a noticeable hole right a way? Could it take awhile for the gases to well up and produce what’s been observed. Has anyone created a simulation to look at this possibility?
I haven’t posted this because I wasn’t sure I saw something and I didn’t want to seem foolish. However I thought I should say something instead of just sitting on my hands.
Also one point – I did not put what I think I saw together after the all the press, I wasn’t sure what I saw so I filled it away in my head (sorry no notes – really should keep a journal).
So is this possible?
Thanks,
Jeff
(Northern Kentucky – South of Cincinnati)
Edited by Charlie Hein (07/30/09 06:10 AM)
|
Charlie Hein
Postmaster
Reged: 11/02/03
Posts: 8423
Loc: 26.06.08N, +80.23.08W
|
|
Making this a "sticky" so we don't forget - still looking for images that pre-date Bird's discovery image - images between 6:15Z (UTC) and 14:00Z (UTC) on July 19...
--------------------
"He's dead, Jim - I'll get his wallet, you get his tricorder." - Leonard "Bones" McCoy
Weston CSC:
|
zAmbonii
Pooh-Bah
Reged: 01/19/08
Posts: 1029
Loc: Ypsilanti, MI
|
|
I have some images after Paul, just almost up to the time the area should have rotated out of view. I have to go to work now so I will get something posted when I get home. (ending at 7:15UT).
--------------------
Check out my Astrophotos on Flickr
C6-N 150mm f/5 Newtonian
CG-5 ASGT mount
Canon 300D self modded + IDAS LPS-P2 FF
Meade 70AZ + Meade DSI for autoguiding
|
zAmbonii
Pooh-Bah
Reged: 01/19/08
Posts: 1029
Loc: Ypsilanti, MI
|
|
OK...sorry for the delay in posting. After looking at my pics, and reprocessing a few, I became obsessed again at trying to get things to look as good as I can....and I may need some help to see if anyone can process a few of my pics better than I can (will explain in a bit).
First up. I wasn't really planning on imaging jupiter, but it was there and I wanted to test some settings with my webcam (to confirm that high fps captures are worse than low fps captures). Of course, what I know now (about the impending impact), I would have been conservative to use the best settings.
Specs on Equpiment:
Celestron C6-N 6" f/5 reflector
SPC900NC webcam
2x + 3x barlows stacked (~f/30)
Seeing = average to maybe just above average
I ended up taking 19 different .avis lasting one minute long from 0614UT to 0715UT. I created an animation (that I posted in the mega thread) that combined processed images from all 19 .avis. The processing on each individual .avi kinda sucked (learned a couple of new things since). You can view that animated .gif here.
I went back and reprocessed some select .avis from the bunch and will list them below. Some details about the processing: .avis were converted and saved as .bmps with virtualdub. Used ppmcentre/ninox to center and crop the images (quality sorted). Loaded .bmps into registax, aligned and stacked, RGB aligned, and guessed at best wavelets. Then did final light r/l deconvolution in astraimage. Oh yea...for these pics, I also did a 1.5x resample. Now here are the pics:
0614UT: captured at 5fps. loaded all frames into registax, stacked all but the worst frames
0617UT: captured at 5fps. loaded all frames into registax, stacked all but the worst frames
0644UT: captured at 15fps. loaded best 550 (out of 900) frames into registax, stacked 500.
0709UT: captured at 10fps. loaded all 600 frames into registax, stacked 500.
0711UT: captured at 5fps. loaded all frames into registax, stacked all but the worst.
0713UT: captured at 20fps  . loaded best 600 frames (out of 1200) into registax, stacked 500.
0715UT: captured at 20fps. loaded best 600 frames (out of 1200) into registax, stacked 500.
Now...I became obsessed again with the processing because I saw again what I saw about a week ago, and I convinced myself it was a processing artifact. But now I I am back into the unsure department. In two of my images at 0711UT and 0713UT I see a slight dark spot in the area where the impact happened. Unfortunately, the spot doesn't appear to be there in the 0715UT image (but could be because of my processing or because of a poor capture).
Mike Phillips' pic in this thread has nearly the same orientation of the white oval and the impact site as my 0711UT image. I created an animated .gif to show the position of his image compared to what I captured. Unfortunately the .gif conversion ruined quality a bit. That animation is here.
This is why I was obsessed in the past day or so. The impact site seems to be very close to where I see a dark spot in two of my images.
This is where I would like some of your help. I have uploaded a .rar file that contains both my processed versions of the images, and it also contains the .tifs I got out of registax. After stacking they only have been RGB aligned with registax. You can download this .rar file here. (3MB)
In addition, I have also uploaded the .bmp files from the 0709UT, 0711UT, 0713UT, and 0715UT .avi files. These have been cropped and centered with ninox, but not quality sorted. If any of you want to take a stab at processing these images feel free to. The .rar file with the .bmps can be found here. (Warning: 157MB!).
The quality of the captures and my processing have a lot to be desired. That is why I am unsure of what is in the pics. What I am seeing may be processing/capture artifacts, but they also may also show the impact scar beginning to form. I wish I could find someone who was imaging at the same time to confirm/rule out things, but, so far, I havent seen any images that were taken at this time.
Sorry for the long post, but If I have captured something this close to the impact it could be as important as Anthony's discovery. But it also could be nothing at all. Would like to have some other eyes take a look and have some other more skilled people take a stab at the data to see what they can come up with. Thanks all!
--------------------
Check out my Astrophotos on Flickr
C6-N 150mm f/5 Newtonian
CG-5 ASGT mount
Canon 300D self modded + IDAS LPS-P2 FF
Meade 70AZ + Meade DSI for autoguiding
|
Bird
Post Laureate
Reged: 08/07/03
Posts: 3150
Loc: Canberra, Australia
|
|
Thanks zAmbonii, I'll pass a link to this forum onto Dr John Rogers of the BAA and Dr Glenn Orton of JPL and they can come take a look see if there's anything here.
cheers, Bird
--------------------
Deep Sky Optics 13.1" f/5.5 newtonian,
PGR Dragonfly Express, PGR Dragonfly 2
RedHat Linux + Coriander
http://www.acquerra.com.au/astro/
|
PSS
journeyman
Reged: 08/22/09
Posts: 9
|
|
Did you take all those images?
|
|
10 registered and 8 anonymous users are browsing this forum.
Moderator: Charlie Hein, knuklhdastnmr
Print Thread
|
Forum Permissions
You cannot start new topics
You cannot reply to topics
HTML is disabled
UBBCode is enabled
|
Thread views: 2211
|
|
|
|
|
|
|
Previous
Index
Next
Threaded
Edit
Reply
Quote
