Lunar: Theophilus 21/12/2005

[bird (Anthony Wesley)]

Bert, I'll take your word for the fov calculation, I'm not sure how to calculate that - but the other details on focal length and camera are correct.

Resolution is a tricky thing to get accurate - I still feel that there is a lot more potential information present in the raw frames than the current software can extract. More so in these images because there was a lot of thermal motion going on, and it's only partly corrected for in software.

I could be optimistic and claim a couple of hundred metres per pixel, it should be something like that.

regards, Bird

[avandonk]

If the numbers are correct then the FOV is correct.

FOV in deg =57.3(width of sensor/focal length) .
One radian =57.3deg.
as long as all dimensions are the same units.

and Moon diameter 3476 km
assume 0.5 deg apparent angular size

so (0.024/0.5)X3476 = 167 km for 680 pixels

so 167/640 = 0.260 km per pixel

So each pixel is 260M
If we assume the niquist theory is correct that you have to sample at half the distance of the wanted resolution then your best theoretical resolution is about 500m. I think that is amazing.



Bert