Lunar Orbiter - calculating the corner coordinates, I need to calculate these for myself for a new project |
Lunar Orbiter - calculating the corner coordinates, I need to calculate these for myself for a new project |
Nov 17 2010, 01:10 AM
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Newbie ![]() Group: Members Posts: 10 Joined: 25-September 10 Member No.: 5455 |
I wonder if all you knowledgable people can help me find out how to calculate the corner coordinates of a lunar orbiter photo please?
I suspect it is a fairly basic astonomical calculation but I do not know how to do it. I want to program (calculate for myself not find out from other websites) the corner coordinates of the old Lunar Orbiter 1-5 photographs, both medium and high resolution ones for a new web project I am starting. I guess the formula for doing this has something to do with the height of the spacecraft, the angular coverage and the centre point of the photo. I have found this information and I know that the angular coverage of medium resolution photos taken with the 80mm lens is 44.4 degrees x 38 degrees and the coverage for the 610mm lens for high-resolution photos is 20.4 x 5.16 degrees. I have found diagrams explaining it all but it is a long time since my school days and geometry was never my best subject, so I am hoping that some good soul has a formula somewhere so that I can just plug in the appropriate values and get the answer. Any help would be appreciated. Thanks. Paul |
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Nov 17 2010, 02:34 PM
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Senior Member ![]() ![]() ![]() ![]() Group: Members Posts: 4513 Joined: 5-April 05 From: Canada Member No.: 227 |
Hi - this is what you want:
http://nssdc.gsfc.nasa.gov/nmc/datasetDisp...o?id=PSPG-00160 You should contact NSSDC to see if they have the data in hard copy which could be scanned and OCR'd into a text file. See the email link at the bottom of that page. It was my understanding that the Orbiter 1 data were missing, however. That's why the global photomosaic has a hole in it. Phil -------------------- ... because the Solar System ain't gonna map itself.
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Qmantoo Lunar Orbiter - calculating the corner coordinates Nov 17 2010, 01:10 AM
JohnVV ??? good question
this is just a guess . The firs... Nov 17 2010, 05:06 AM
Qmantoo Thanks for your reply, however, I dont know how to... Nov 17 2010, 10:14 AM
Qmantoo Thanks Phil, Thats great. I would have searched fo... Nov 17 2010, 11:41 PM
Qmantoo I have found what I was looking for in excel forma... Nov 18 2010, 01:29 AM
Qmantoo This csv file is from here
This data says in it ... Dec 2 2010, 06:33 AM
Phil Stooke Do they match what you would expect if you plot th... Dec 2 2010, 12:42 PM
Qmantoo QUOTE (Phil Stooke @ Dec 2 2010, 08:42 PM... Dec 3 2010, 02:05 AM
Phil Stooke Understood! But still, plotting them might te... Dec 3 2010, 03:45 AM
JohnVV QUOTE (maybe a spacecraft orientation for thermal ... Dec 3 2010, 04:11 AM
Qmantoo The point is that there must be good data around s... Dec 4 2010, 01:46 AM
JohnVV you do know just how old the lo data is
Lunar Orb... Dec 4 2010, 03:00 AM
Qmantoo QUOTE you do know just how old the lo data is
Lun... Dec 4 2010, 06:33 AM
JohnVV QUOTE I am sorry, but I do not see what age of dat... Dec 4 2010, 09:31 AM
Phil Stooke I was going to suggest that you ask on the ISIS/GI... Dec 4 2010, 02:40 PM
Qmantoo OK, thanks to all of you for your help on this. Fo... Dec 6 2010, 04:21 AM![]() ![]() |
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