Date: 6/09/2015 13:56:54
From: mollwollfumble
ID: 771736
Subject: New Horizons is back on line.

NASA’s New Horizons Spacecraft Begins Intensive Data Downlink Phase.
http://www.nasa.gov/feature/nasa-s-new-horizons-spacecraft-begins-intensive-data-downlink-phase

If you liked the first historic images of Pluto from NASA’s New Horizons spacecraft, you’ll love what’s to come.

Seven weeks after New Horizons sped past the Pluto system to study Pluto and its moons – previously unexplored worlds – the mission team will begin intensive downlinking of the tens of gigabits of data the spacecraft collected and stored on its digital recorders. The process moves into high gear on Saturday, Sept. 5, with the entire downlink taking about one year to complete.

“This is what we came for—these images, spectra and other data types that are going to help us understand the origin and the evolution of the Pluto system for the first time,” the typical downlink rate is approximately 1-4 kilobits per second.

The team also plans to continue posting new, unprocessed pictures from the Long Range Reconnaissance Imager (LORRI) on the New Horizons project website each Friday. The images will be available at http://pluto.jhuapl.edu/soc/Pluto-Encounter/index.php; the next LORRI set is scheduled for posting on Sept. 11.

PS. I love the following image. Can you guess what it is? It’s the Occultation of the Sun by Charon. This proves that Charon has no atmosphere. If you download and increase brightness you can see the ghostly outline of Charon as seen by reflected light from Pluto.

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Date: 6/09/2015 14:53:59
From: Bubblecar
ID: 771745
Subject: re: New Horizons is back on line.

Ta moll, but I can’t make much sense of that picture.

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Date: 6/09/2015 15:14:45
From: Bubblecar
ID: 771751
Subject: re: New Horizons is back on line.

Bubblecar said:


Ta moll, but I can’t make much sense of that picture.

OK, seeing it now. The ghostly crescent is Charon presumably with the Sun already behind it.

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Date: 6/09/2015 15:17:54
From: Bubblecar
ID: 771752
Subject: re: New Horizons is back on line.

Enhanced contrast with Photoshop:

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Date: 6/09/2015 15:24:32
From: PermeateFree
ID: 771753
Subject: re: New Horizons is back on line.

Bubblecar said:


Enhanced contrast with Photoshop:


Totally underwhelmed!?**!!!

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Date: 6/09/2015 17:17:40
From: mollwollfumble
ID: 771783
Subject: re: New Horizons is back on line.

PermeateFree said:


Totally underwhelmed!?**!!!

Well, where else in the Solar System can you point a camera directly at the Sun and see nothing?
OK, there are a few places, but they’re not easy to get to.

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Date: 6/09/2015 17:21:42
From: The Rev Dodgson
ID: 771785
Subject: re: New Horizons is back on line.

mollwollfumble said:


Well, where else in the Solar System can you point a camera directly at the Sun and see nothing?

Any planet at night?

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Date: 6/09/2015 17:22:23
From: Bubblecar
ID: 771786
Subject: re: New Horizons is back on line.

The Rev Dodgson said:


mollwollfumble said:

Well, where else in the Solar System can you point a camera directly at the Sun and see nothing?

Any planet at night?

Good catch.

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Date: 6/09/2015 17:30:13
From: mollwollfumble
ID: 771792
Subject: re: New Horizons is back on line.

mollwollfumble said:


PermeateFree said:

Totally underwhelmed!?**!!!

Well, where else in the Solar System can you point a camera directly at the Sun and see nothing?
OK, there are a few places, but they’re not easy to get to.

Perhaps I’ll rephrase that. In astronomy, the Sun is a huge blind spot. From Earth astronomers can’t see within 55 degrees of the Sun without being blinded by it, even during eclipses. In space closer than the Moon – ditto. The space telescope seeing stars near the Sun is Lasco on Soho, but that can only see stars within 6 degrees of the Sun. So we have that enormous blind spot between 6 and 55 degrees from the Sun. Even hiding behind Pluto is no good, because even Pluto’s atmosphere is thick enough to generate a ring of light that reduces visibility of Stars near the Sun.

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Date: 6/09/2015 17:43:28
From: dv
ID: 771798
Subject: re: New Horizons is back on line.

mollwollfumble said:


mollwollfumble said:

PermeateFree said:

Totally underwhelmed!?**!!!

Well, where else in the Solar System can you point a camera directly at the Sun and see nothing?
OK, there are a few places, but they’re not easy to get to.

Perhaps I’ll rephrase that. In astronomy, the Sun is a huge blind spot. From Earth astronomers can’t see within 55 degrees of the Sun without being blinded by it, even during eclipses. In space closer than the Moon – ditto. The space telescope seeing stars near the Sun is Lasco on Soho, but that can only see stars within 6 degrees of the Sun. So we have that enormous blind spot between 6 and 55 degrees from the Sun. Even hiding behind Pluto is no good, because even Pluto’s atmosphere is thick enough to generate a ring of light that reduces visibility of Stars near the Sun.

Okay but there are quite a few sizeable bodies in the SS with no significant atmosphere.

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Date: 6/09/2015 17:57:45
From: CrazyNeutrino
ID: 771803
Subject: re: New Horizons is back on line.

Bubblecar said:


The Rev Dodgson said:

mollwollfumble said:

Well, where else in the Solar System can you point a camera directly at the Sun and see nothing?

Any planet at night?

Good catch.

Any planet you are directly behind from far away

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Date: 12/09/2015 15:17:10
From: dv
ID: 774490
Subject: re: New Horizons is back on line.

Starting to get some high res pics back now.

These are still “1 in 4” pixel jobbies: The final pictures will have twice the resolution.

8 MPixel http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/Surface-Features-9-10-15.jpg

8 MPixel http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/Spherical-Mosaic-9-10-15.jpg

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Date: 12/09/2015 15:38:48
From: Bubblecar
ID: 774497
Subject: re: New Horizons is back on line.

dv said:


Starting to get some high res pics back now.

These are still “1 in 4” pixel jobbies: The final pictures will have twice the resolution.

8 MPixel http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/Surface-Features-9-10-15.jpg

8 MPixel http://pluto.jhuapl.edu/Multimedia/Science-Photos/pics/Spherical-Mosaic-9-10-15.jpg

Wow. It’s certainly a lubly planet.

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Date: 12/09/2015 15:43:49
From: ChrispenEvan
ID: 774498
Subject: re: New Horizons is back on line.

was looking at some of these yesterday. really clear pics that don’t show how cold it is.

:-)

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Date: 12/09/2015 15:46:03
From: Bubblecar
ID: 774499
Subject: re: New Horizons is back on line.

Oddly enough, some regions are reminiscent of Martian “chaotic terrain”, while the adjacent polygonal plains remind me of early artworks depicting the Martian canals.

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