New Horizons: Approach Phase, OpsNav - 25 January 15 to 28 June 15 |
New Horizons: Approach Phase, OpsNav - 25 January 15 to 28 June 15 |
Feb 3 2015, 06:45 PM
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#101
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Member Group: Members Posts: 105 Joined: 27-August 05 Member No.: 479 |
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Feb 4 2015, 09:22 PM
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#102
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Forum Contributor Group: Members Posts: 1372 Joined: 8-February 04 From: North East Florida, USA. Member No.: 11 |
The LORRI image release for today is up at :
http://pluto.jhuapl.edu/News-Center/News-A...p?page=20150204 |
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May 28 2015, 05:10 PM
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#103
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Solar System Cartographer Group: Members Posts: 10194 Joined: 5-April 05 From: Canada Member No.: 227 |
Just for the record... I have tried reprojecting the latest three images to make a cylindrical projection map, but I can't get a consistent result. The bright spots don't combine as I would expect. I don't know where the problem is right now. There might be issues with limb brightening and deconvolution that are complicating matters. I hope the science team will put something out so I can see what i am doing wrong.
Phil -------------------- ... because the Solar System ain't gonna map itself.
Also to be found posting similar content on https://mastodon.social/@PhilStooke Maps for download (free PD: https://upload.wikimedia.org/wikipedia/comm...Cartography.pdf NOTE: everything created by me which I post on UMSF is considered to be in the public domain (NOT CC, public domain) |
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May 29 2015, 12:04 AM
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#104
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Senior Member Group: Members Posts: 2346 Joined: 7-December 12 Member No.: 6780 |
Just for the record... I have tried reprojecting the latest three images to make a cylindrical projection map, but I can't get a consistent result. The bright spots don't combine as I would expect. I don't know where the problem is right now. There might be issues with limb brightening and deconvolution that are complicating matters... An idea could be trying deconvolution / sr directly on a spherical model, instead of individual 2d stacks. But I'm almost sure, that New Horizons will acquire better images much faster than I could write an according sw. After a first glance at the jpg compression artifacts I knew it would be easier just to wait a few days. Deconvolving compression artifacts ... I've never tried before. |
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May 29 2015, 09:14 AM
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#105
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Junior Member Group: Members Posts: 77 Joined: 27-June 04 From: Queensland Australia Member No.: 90 |
I see there are reports of a possible sixth moon, half as bright as Styx on Space News, but I think it could have been a misquote.
From Space News: http://www.space.com/29513-pluto-moons-rin...ons-photos.html QUOTE New Horizons spotted all five of Pluto's known moons — Charon, Nix, Hydra, Kerberos and Styx — during this initial search, and scientists determined that the spacecraft could have detected a satellite just half as bright as Styx, which is the faintest of the five. However, from Space Daily: QUOTE The New Horizons hazard detection team, led by John Spencer of the Southwest Research Institute in Boulder, Colorado, determined that small satellites with about half the brightness of Pluto's faintest known moon, Styx, could have been detected at this range. Ouch! A little different I think they are both trying to say that any satellites about half the brightness of Styx ought to be detectable at this range if they existed. |
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