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Ian R
Posted on: May 25 2006, 03:23 AM


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Wow! Great work! wink.gif

Is that the eastern rim of the South Pole-Aitken basin I can see to the left of Orientale?
  Forum: Lunar Exploration · Post Preview: #55652 · Replies: 161 · Views: 327202

Ian R
Posted on: Apr 10 2006, 09:13 PM


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Great work! biggrin.gif

This has to be my favourite view of Saturn taken by Pioneer 11. Visible for the very first time are the four inner ringlets of the C-ring:

Attached Image


Ian.
  Forum: Saturn · Post Preview: #50092 · Replies: 27 · Views: 45155

Ian R
Posted on: Mar 27 2006, 08:09 PM


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QUOTE (helvick @ Mar 27 2006, 05:55 PM) *
Quick and dirty with Celestia. This is fairly heavily jpeg reduced but you get the idea. It's quite a nice map and the two small white oval storms that have subsequently become Red Junior /Oval BA are nicely visible.
Looks pretty cool alright spinning around. I'd post a video but avi's ain't allowed.
[attachment=4745:attachment]


If you want to post a video, you can upload it it to this website:

http://rapidshare.de/

Then, all you need to do is post the resultant link here.
  Forum: Jupiter · Post Preview: #47877 · Replies: 19 · Views: 25624

Ian R
Posted on: Mar 8 2006, 09:42 AM


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QUOTE
What a very sad day .... London's Planetarium being closed down to make way for people getting "close to famous people" ? Close to wax models of famous people, that is, right? My GOD - the world is getting dumber by the minute. You would have thought there was enough of all that 'celebrity' bollocks on the television. So future generations of children will no longer be able to wonder at the the beautiful panorama of the night sky, and feel stimulated to enquire about the Universe we live in. Lord knows, with the ever-increasing light pollution, kids will no longer be able to see the stars for real either. This decision really sums up the increasingly shallow culture we are descending into.

Dr. Brian May


http://www.brianmay.com/brian/brianssb/brianssbjan06.html
  Forum: Chit Chat · Post Preview: #44574 · Replies: 11 · Views: 11355

Ian R
Posted on: Jan 16 2006, 08:53 PM


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There was me thinking that the Hubble evidence for the inner new ring was rather tenuous - Keck has just confirmed its existence: cool.gif

http://keckobservatory.org/news/science/05...anus/index.html

Attached Image
  Forum: Uranus and Neptune · Post Preview: #36367 · Replies: 20 · Views: 32492

Ian R
Posted on: Dec 15 2005, 04:42 AM


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QUOTE (mike @ Dec 15 2005, 04:07 AM)
I was kidding.  But maybe so were you.  Oh, what a tangled web I've woven.  I shall never joke at another's expense again.  Unless the other deserves it.
*


wink.gif
  Forum: Earth Observations · Post Preview: #31392 · Replies: 20 · Views: 25604

Ian R
Posted on: Dec 15 2005, 02:56 AM


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QUOTE (mike @ Dec 15 2005, 02:31 AM)
WW2?  What's that?

I'm in America and I heard about the explosion(s)..
*


World War 2.
  Forum: Earth Observations · Post Preview: #31384 · Replies: 20 · Views: 25604

Ian R
Posted on: Dec 2 2005, 11:25 AM


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QUOTE (dvandorn @ Dec 2 2005, 07:09 AM)
You can, indeed, see Surveyor in the EVA 1 color pans from Apollo 12 -- the top two and a half feet of it, anyway.  The solar panel and antenna, and a bit of the mast, were in sunlight, while the rest of Surveyor was in shadow during the first EVA. 
-the other Doug
*


Although only the mast and solar panels were iilluminated by direct sunlight, the rest of Surveyor is visible thanks to reflected light from the western wall of the crater.

I've attached a cropped version of a photo taken during EVA-1 showing Surveyor Crater (and the shadow of Intrepid in the foreground). I've brightened the area around the probe to show a bit more detail. It looks to me that the body of the spacecraft is clearly visible in the darkness:

Attached Image


Ian.
  Forum: Image Processing Techniques · Post Preview: #29571 · Replies: 555 · Views: 309853

Ian R
Posted on: Dec 2 2005, 11:17 AM


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AS12-48-7088
Attached Image


AS12-48-7091
Attached Image
  Forum: Image Processing Techniques · Post Preview: #29568 · Replies: 555 · Views: 309853

Ian R
Posted on: Dec 2 2005, 11:13 AM


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QUOTE (Phil Stooke @ Dec 1 2005, 04:22 PM)
Thanks, Ian R - very nice images.  I played with them a bit... possibly the uphill footpad imprints are visible - the 'second landing' set, also visible in the Surveyor 3 pan.  The first landing set might be resolved (especially if the original neg could be used!) - but it would not be easy to identify them unambiguously on this.  I'll post something on it later.  Thanks again for a very nice view of this area.

Phil
*


You're welcome Phil. Glad to be of assistance.

Here are a few other Apollo 12 photographs that might help you to pinpoint the exact position of the footpad imprints:

AS12-48-7084
Attached Image
  Forum: Image Processing Techniques · Post Preview: #29566 · Replies: 555 · Views: 309853

Ian R
Posted on: Dec 1 2005, 12:37 PM


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Here's a magnified view of Surveyor from Block Crater, made by combining a couple of photographs at 200%.
  Forum: Image Processing Techniques · Post Preview: #29420 · Replies: 555 · Views: 309853

Ian R
Posted on: Dec 1 2005, 12:21 PM


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QUOTE (Phil Stooke @ Nov 24 2005, 02:59 PM)
This is part of the reprocessed Surveyor 3 panorama showing the footpad imprints uphill from the landing point.

According to the Apollo Lunar Surface Journal the astronauts never mentioned seeing the uphill imprints at all.  Their attention was solely on the spacecraft and regolith immediately around it (trenches, prints from the last little bounce). 

*



Phil,

I don't know if this image is of any use (it's a crop of AS12-48-7144), but it's a pretty unique and interesting view of Surveyor, anyway. wink.gif

Attached Image


http://www.hq.nasa.gov/office/pao/History/...2-48-7144HR.jpg

Ian.
  Forum: Image Processing Techniques · Post Preview: #29418 · Replies: 555 · Views: 309853

Ian R
Posted on: Nov 15 2005, 11:53 PM


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QUOTE
[47.08] The topography of Iapetus' leading side

There is an old 800 km impact basin centered at 270 degrees E, 40 degrees N with rim topography of more than 10 km extending over scales of 300-400 km

http://www.aas.org/publications/baas/v37n3/dps2005/82.htm


Judging from this abstract, this should be the rough postion and extent of the large basin:

Attached Image
  Forum: Cassini's ongoing mission and raw images · Post Preview: #27042 · Replies: 126 · Views: 112482

Ian R
Posted on: Nov 15 2005, 11:11 PM


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Night-side in context:

Attached Image
  Forum: Cassini's ongoing mission and raw images · Post Preview: #27036 · Replies: 126 · Views: 112482

Ian R
Posted on: Nov 15 2005, 10:48 PM


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QUOTE (Decepticon @ Nov 15 2005, 09:07 PM)
Whoo Hoo! Saturn shine!

Having a tough time getting any detail.
*


This is the best I can get out of the nightside from the raw JPEGs:

Attached Image
  Forum: Cassini's ongoing mission and raw images · Post Preview: #27030 · Replies: 126 · Views: 112482

Ian R
Posted on: Nov 15 2005, 10:38 PM


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QUOTE (volcanopele @ Nov 15 2005, 10:32 PM)
I don't know of a graphic available online, but it is described in Bernd's DPS abstract:

http://www.aas.org/publications/baas/v37n3/dps2005/82.htm
*


Thanks Jason.
  Forum: Cassini's ongoing mission and raw images · Post Preview: #27028 · Replies: 126 · Views: 112482

Ian R
Posted on: Nov 15 2005, 10:15 PM


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QUOTE (volcanopele @ Nov 15 2005, 10:10 PM)
hmmm, the quantization due to the stretch, the jpeg compression, and the 12-bit to 8-bit conversion does do a number on how much detail you can get out of these jpegs in the region illuminated by Saturn-shine.  Not to mention the scattered light ohmy.gif
*


Jason, where can we find the topographical data from the January flyby that revealed the existence of the large basin?

Thanks! smile.gif
  Forum: Cassini's ongoing mission and raw images · Post Preview: #27023 · Replies: 126 · Views: 112482

Ian R
Posted on: Nov 14 2005, 01:46 PM


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QUOTE (Decepticon @ Nov 14 2005, 12:58 PM)
I must be blind! I can't find it.  sad.gif
*




Only the eastern rim is visible in the second image, while the floor of the basin can be seen in the third, black & white, picture.
  Forum: Cassini's ongoing mission and raw images · Post Preview: #26763 · Replies: 126 · Views: 112482

Ian R
Posted on: Oct 17 2005, 03:58 PM


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Brilliant work Ted! Surely this has to be the definitive presentation of the best Iapetus images taken by Voyager. biggrin.gif

Thanks also to Rob and Deception for solving the Mystery of the Missing Impact Basin. Perhaps we could ask Emily or Jason if they could find out where the 850km basin is supposed to be located on the moon? ohmy.gif
  Forum: Cassini's ongoing mission and raw images · Post Preview: #23766 · Replies: 30 · Views: 35574

Ian R
Posted on: Oct 16 2005, 02:05 AM


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Great shot of Tethys:

Attached Image
  Forum: Cassini's ongoing mission and raw images · Post Preview: #23688 · Replies: 62 · Views: 62765

Ian R
Posted on: Oct 7 2005, 02:40 PM


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Great work Rob! Due to the general lack of information on the internet with regards to the D-ring, this thread has been a joy to read. smile.gif
  Forum: Cassini's ongoing mission and raw images · Post Preview: #22998 · Replies: 95 · Views: 160988

Ian R
Posted on: Oct 7 2005, 02:37 PM


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Attached Image


For some reason, the big impact basin visible in Ted's picture (circled here in red) doesn't show up in Steve Albers' map of Iapteus. The large crater in the southern lighter terrain isn't there either.

Is the map incorrect, or am I looking in the wrong places? unsure.gif

http://laps.fsl.noaa.gov/albers/sos/saturn...rgb_cyl_www.jpg

Attached Image
  Forum: Cassini's ongoing mission and raw images · Post Preview: #22996 · Replies: 30 · Views: 35574

Ian R
Posted on: Oct 5 2005, 08:46 AM


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I took dilo's great animation of the Hyperion approach and modified it slightly, so that it plays constantly on a loop - backwards and forwards. This allows the viewer to get a better appreciation of the moon's complex topography.

Well, it works for me anyway! biggrin.gif

  Forum: Cassini's ongoing mission and raw images · Post Preview: #22782 · Replies: 200 · Views: 153148

Ian R
Posted on: Oct 1 2005, 12:15 AM


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QUOTE (tedstryk @ Sep 7 2005, 10:14 AM)
I wish they had released a version without arrows.
*


Ask Ted, and ye shall receive! wink.gif

http://antwrp.gsfc.nasa.gov/apod/image/050...eepimpact_f.jpg
  Forum: Cometary and Asteroid Missions · Post Preview: #22401 · Replies: 11 · Views: 12999

Ian R
Posted on: Sep 29 2005, 11:52 PM


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Nice work Jason! smile.gif
  Forum: Cassini's ongoing mission and raw images · Post Preview: #22266 · Replies: 200 · Views: 153148

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