LROC news and images |
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LROC news and images |
 Jul 7 2009, 07:42 PM
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#61
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Senior Member  Group: Members Posts: 2510 Joined: 13-September 05 Member No.: 497  |
QUOTE (Paul Fjeld @ Jul 7 2009, 09:59 AM)  I noticed that on a couple of the images but not all. You won't notice it on summed images because for those the even and odd pixels are averaged in the instrument. And as Doug says, you have to zoom all the way in to see it on a full-res image, and even then it's less noticeable on some images than others. -------------------- Disclaimer: This post is based on public information only. Any opinions are my own.
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Jul 8 2009, 01:07 AM
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#62
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 Member Group: Members Posts: 150 Joined: 3-June 08 From: McLean, VA Member No.: 4177 |
I guess my point was that the LROC folks are doing a good job of modifying the raw data so that the striping effect is almost non-existent on the Zoomify images. I went and zoomed up to the pixel limit, grabbed the image and dug deeper. Yes, there is a hint of that striping in some of the image "blocks" but it looks more like a "jpeg-ing." They're very nice anyway!
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Jul 8 2009, 07:03 AM
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#63
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Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
QUOTE (Paul Fjeld @ Jul 8 2009, 02:07 AM) so that the striping effect is almost non-existent on the Zoomify images. Some images have it - some don't - as Mike explained. For those that have it - it IS in the Zoomify images, you just need to zoom in more than Zoomify can. There's no gradient between existing and non existing. It's one or the other. |
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Jul 8 2009, 11:39 AM
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#64
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Founder Group: Chairman Posts: 14431 Joined: 8-February 04 Member No.: 1 |
Tiny bit of LROC WA mosaic from the calib image released.
It'd be interesting to see if we can pull out a bit of colour variation
Attached thumbnail(s)
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Jul 8 2009, 06:20 PM
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#65
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 Member Group: Members Posts: 753 Joined: 23-October 04 From: Greensboro, NC USA Member No.: 103 |
There's a 'flyover' movie posted on YouTube today.
-------------------- Jonathan Ward
Manning the LCC at http://www.apollolaunchcontrol.com |
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Jul 8 2009, 07:16 PM
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#66
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 Senior Member Group: Members Posts: 1729 Joined: 3-August 06 From: 43° 35' 53" N 1° 26' 35" E Member No.: 1004 |
I am speechless...
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Jul 8 2009, 09:37 PM
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#67
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 Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
QUOTE (mcaplinger @ Jul 7 2009, 01:05 PM) Beware anomalist thinking. The sun angle is likely to be so low that these could well be quite ordinary boulders or clumps. Without knowing the sun angle and even the local topography, you just can't tell. I ran the photo's particulars through SPICE and get a sun elevation of 0.42 degrees, so it's just sitting practically on the horizon and rising. 30JUN2009 16:04:33 UTC, center lon -7.890545, center lat 72.20735 -> sun elevation 0.422, sun azimuth 89.395 -------------------- |
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Jul 9 2009, 09:48 AM
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#68
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 Member Group: Members Posts: 156 Joined: 22-May 09 From: Ireland Member No.: 4792 |
This is a stupid query, but why are all the images North down and South up
 The usual views of presenting images is to have North up and West on the left -- in accordance to the cardinal points as laid down for the Moon by the IAU in 1961. Will future images see a change in orintation? John |
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Jul 9 2009, 10:41 AM
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#69
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 Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
Uncalibrated, raw imaging swaths taken on a descending node in a polar orbit will have north pointed down. Map-projected products take care of this.
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| Guest_Zvezdichko_* |
Jul 10 2009, 06:52 AM
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#70
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Guests |
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Jul 11 2009, 08:24 AM
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#71
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 The Poet Dude Group: Moderator Posts: 5551 Joined: 15-March 04 From: Kendal, Cumbria, UK Member No.: 60 |
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Jul 11 2009, 03:02 PM
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#72
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Member Group: Members Posts: 279 Joined: 19-August 07 Member No.: 3299 |
What instrument will be able to "see" the dark parts of Moon, as the bottom of the Compton crater?
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Jul 11 2009, 03:58 PM
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#73
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Senior Member Group: Members Posts: 1465 Joined: 9-February 04 From: Columbus OH USA Member No.: 13 |
QUOTE (SpaceListener @ Jul 11 2009, 10:02 AM) What instrument will be able to "see" the dark parts of Moon, as the bottom of the Compton crater? The LAMP instrument takes advantage of background ultraviolet (Lyman Alpha hydrogen emission) coming from all directions from stars & also scattered from hydrogen clouds nearer the solar system to see in otherwise dark areas. Pretty fancy I'd say! -------------------- |
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| Guest_Zvezdichko_* |
Jul 11 2009, 03:59 PM
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#74
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Guests |
SpaceListener: Mini-RF. This instrument is also flying aboard Chandrayaan-1 and we already have maps:
http://www.nasa.gov/mission_pages/Mini-RF/...edia/index.html BTW I'm amazed to see objects as small as rocks on the surface on the Moon! These NAC photographs are AWESOME. |
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Jul 11 2009, 04:45 PM
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#75
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 Senior Member Group: Members Posts: 3419 Joined: 9-February 04 From: Minneapolis, MN, USA Member No.: 15 |
QUOTE (Zvezdichko @ Jul 11 2009, 10:59 AM) BTW I'm amazed to see objects as small as rocks on the surface on the Moon! These NAC photographs are AWESOME. I dunno -- some of those rocks are likely the size of a football stadium, if not larger. -the other Doug -------------------- “The trouble ain't that there is too many fools, but that the lightning ain't distributed right.” -Mark Twain
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