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Voyager camera pointing information
Brian Burns
post Jul 29 2016, 09:32 PM
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Sorry if this has been discussed anywhere but I can't seem to find much information about it - why is it that Voyager's pointing is so haphazard, as in this video of all the RAW Jupiter images - https://www.youtube.com/watch?v=bf5QJ8iFxUs?

I came across this link which says that pointing information for the images exists - http://pds-rings.seti.org/voyager/ck.html, but have also read on this forum that it's not very accurate. Would the information be useful in automatically aligning composite images and mosaics, or is it too coarse? Would it at least be useful in getting general alignments that could be refined by hand?

And does anyone know why the cameras could not be pointed more accurately, or why accurate information could not be returned with the images? I assume it was some technical limitation, but just curious what it might be.
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JohnVV
post Aug 3 2016, 11:51 PM
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you have read through my post
"Voyager Images and Isis3, applications and methods"

http://www.unmannedspaceflight.com/index.php?showtopic=8198

use your preferred way of handling the truncated lines

adding a grid and then measuring the offset .You can then offset the non grided image by the x & y amount , this works well .

For non gas giants ,a control network can be used BUT this is easier IF the images are already close to accurate.

QUOTE
I came across this link which says that pointing information for the images exists - http://pds-rings.seti.org/voyager/ck.html, but have also read on this forum that it's not very accurate. Would the information be useful in automatically aligning composite images and mosaics, or is it too coarse? Would it at least be useful in getting general alignments that could be refined by hand?

"vger" predates pds and the isis3 ( and 1 and 2 ) tools and parts of vicar

these are reconstructed kernels built from reworked archive tapes and log books
the fact that they are THIS close

is a feat in of it's self

so for 100% automated ????? probably not
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Posts in this topic
- Brian Burns   Voyager camera pointing information   Jul 29 2016, 09:32 PM
- - mcaplinger   QUOTE (Brian Burns @ Jul 29 2016, 01:32 P...   Jul 29 2016, 09:45 PM
- - Bjorn Jonsson   The north azimuth that can be determined using the...   Jul 29 2016, 11:22 PM
- - Brian Burns   Okay, thank you both for the information - it all ...   Jul 30 2016, 02:01 AM
- - Brian Burns   The links to the downloads on the C kernels page w...   Aug 3 2016, 08:58 PM
- - JohnVV   you have read through my post "Voyager Image...   Aug 3 2016, 11:51 PM
|- - Brian Burns   Thanks for the link, I haven't tried ISIS yet ...   Aug 4 2016, 03:12 AM
- - Ian R   Without correction for geometric distortion, the J...   Aug 4 2016, 05:30 PM
|- - Brian Burns   QUOTE (Ian R @ Aug 4 2016, 11:30 AM) With...   Aug 4 2016, 07:20 PM
|- - Bjorn Jonsson   QUOTE (Brian Burns @ Aug 4 2016, 07:20 PM...   Aug 5 2016, 12:01 AM
|- - Brian Burns   That's good to know about, thanks - I'd re...   Aug 5 2016, 02:59 AM
- - JohnVV   i use gmic ( was called GREYCstoration ) but it e...   Aug 5 2016, 04:54 AM
|- - Brian Burns   Thanks, G'mic looks interesting, especially if...   Aug 5 2016, 05:53 PM
- - Brian Burns   I've been having trouble getting camera pointi...   Aug 27 2016, 03:33 PM
|- - mcaplinger   QUOTE (Brian Burns @ Aug 27 2016, 07:33 A...   Aug 27 2016, 04:53 PM
|- - Brian Burns   QUOTE (mcaplinger @ Aug 27 2016, 11:53 AM...   Aug 27 2016, 05:45 PM
|- - mcaplinger   QUOTE (Brian Burns @ Aug 27 2016, 09:45 A...   Aug 27 2016, 07:39 PM
|- - Brian Burns   I found the problem - somehow in all the permutati...   Aug 27 2016, 10:19 PM
|- - mcaplinger   QUOTE (Brian Burns @ Aug 27 2016, 02:19 P...   Aug 27 2016, 10:21 PM
- - Bjorn Jonsson   QUOTE (Brian Burns @ Aug 27 2016, 05:45 P...   Aug 28 2016, 11:55 PM
- - Brian Burns   Thanks - I guess this means there are gaps in the ...   Aug 29 2016, 05:22 AM


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