New Horizons Funnies and Other Stuff, Miscellaneous Ramblings |
New Horizons Funnies and Other Stuff, Miscellaneous Ramblings |
Jul 15 2015, 07:29 AM
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#31
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Member Group: Members Posts: 714 Joined: 3-January 08 Member No.: 3995 |
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Jul 15 2015, 07:41 AM
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#32
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Member Group: Members Posts: 149 Joined: 18-June 08 Member No.: 4216 |
Pluto does look a bit like a choc+vanilla ice cream that was left out of the freezer
for too long (or a planet-wide experiment at cappuccino making, take your pick) |
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Jul 16 2015, 03:33 PM
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#33
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Junior Member Group: Members Posts: 45 Joined: 27-August 14 From: Private island on Titan Member No.: 7250 |
30 years ago this December... #ThrowbackThursday
-------------------- aka the Vidiconvict
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Jul 16 2015, 06:37 PM
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#34
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Junior Member Group: Members Posts: 65 Joined: 19-November 14 From: Milan, Italy Member No.: 7340 |
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Jul 16 2015, 07:00 PM
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#35
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Senior Member Group: Members Posts: 3648 Joined: 1-October 05 From: Croatia Member No.: 523 |
NASA PR is doing a mess. Released the same inset (flipped) in two different locations. NASA PR is not producing the images. What you're seeing is probably the result of pressure to release the images as fast as possible. People complain when releases are delayed. People complain when they're not. There's just no pleasing some people. -------------------- |
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Jul 17 2015, 01:22 AM
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#36
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Newbie Group: Members Posts: 12 Joined: 26-September 11 Member No.: 6180 |
Question about slightly older Pluto images. Pluto is noted in these glass plates from Tombaugh's discovery in 1930. What is (are) the other item(s) highlighted in red?
Here's a crude blinking GIF: https://twitter.com/rtphokie/status/621749241644498944 |
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Jul 17 2015, 01:24 AM
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#37
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Member Group: Members Posts: 555 Joined: 27-September 10 Member No.: 5458 |
edit: deleted. I pay little attention some times.
Ok, rtphokie, a more studied answer this time. Strangely, the object appears to be the same in both frames, so I would assume not dust (though it has a peculiar shape). It appears to be going 90 degrees to the ecliptic. in this image. I don't see anything registering on Stellarium. Interesting. Hope to see a resolution to this as well. ---------- Edit ---------- Also just noticed a few other moving dots. Pluto of course, near the middle in the ellipse. This is a discussion better placed in its own thread though. -------------------- |
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Jul 17 2015, 02:01 AM
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#38
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Member Group: Members Posts: 723 Joined: 13-June 04 Member No.: 82 |
Apparently, if instead of a blink comparator, Mr. Tombaugh had used a stereo comparator (where each of the two plates is projected to a separate eye), any slow-moving objects would have been immediately obvious as a dot hovering above (or below) the flat plane of the fixed stars. Not sure how it would handle objects moving at a near right angle, like the second object pointed out above. I believe the individual plates would be slowly rotated through a 180 degree half-turn, but I'm not certain about that. This method was widely adopted after the discovery of Pluto because it was far easier to spot slow-moving objects using this method than with a blink comparator.
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Jul 17 2015, 02:24 AM
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#39
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
rtpholke, that was probably an asteroid. Recall that Tombaugh was specifically searching for objects moving at a slow speed, which would normally indicate that it was a large distance from the sun.
-------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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Jul 17 2015, 02:58 AM
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#40
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Senior Member Group: Members Posts: 4246 Joined: 17-January 05 Member No.: 152 |
Well, that's not me. If they're not delayed, better for me, I can see them earlier. If they are delayed, again better for me, the scientists will have more time to understand everything and I'll have my questions answered earlier. Yeah. We have to keep in mind that the press release images are just that - and they're not meant for the kind of analysis many of us do here. (We've seen some bizarre stuff with the Dawn press release images, too.) We may have to wait for the jpegs at the New Horizons SOC site, and better still for the eventual downlink and release of the raws. Push the gamma on one of those press release images too far and you never know what you may find... |
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Jul 17 2015, 03:33 AM
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#41
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Newbie Group: Members Posts: 12 Joined: 26-September 11 Member No.: 6180 |
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Jul 17 2015, 03:40 AM
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#42
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Junior Member Group: Members Posts: 45 Joined: 12-February 15 Member No.: 7397 |
Question about slightly older Pluto images. Pluto is noted in these glass plates from Tombaugh's discovery in 1930. What is (are) the other item(s) highlighted in red? We can rule out another TNO, given it is not moving in the same general retrograde direction as Pluto. MBAs and NEOs can also be ruled out for similar reasons. Knowing how thorough Tombaugh was with his survey, he wouldn't have overlooked something of that magnitude. The non-symmetrical appearance in both images suggests they were specks of dirt on the plates when they were eventually scanned. |
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Jul 17 2015, 05:07 AM
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#43
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Senior Member Group: Admin Posts: 3108 Joined: 21-December 05 From: Canberra, Australia Member No.: 615 |
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Jul 17 2015, 06:13 AM
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#44
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Member Group: Members Posts: 470 Joined: 24-March 04 From: Finland Member No.: 63 |
I wouldn't think it is an asteroid, since they move the same apparent distance in hours when Pluto takes months.
-------------------- Antti Kuosmanen
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Jul 17 2015, 06:23 AM
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#45
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Merciless Robot Group: Admin Posts: 8783 Joined: 8-December 05 From: Los Angeles Member No.: 602 |
Depends almost entirely on the distance. NEOs at their closest can whiz by VERY quickly from our perspective, main belt asteroids not so fast.
I don't recall the interval between the two Pluto discovery photographs, but I'm pretty sure it was hours or at most a couple of days, not months. Those pics have an extremely small field of view. -------------------- A few will take this knowledge and use this power of a dream realized as a force for change, an impetus for further discovery to make less ancient dreams real.
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