by iamlucky13 » Mon Aug 20, 2007 6:32 am
http://antwrp.gsfc.nasa.gov/apod/ap070818.html
The color in this photo is great (although probably enhanced). Also, it looks like the telescope was moving as the picture was taken. Notice some of the ribs appear translucent.
Did anybody else notice the star trails from the earth's rotation don't appear even remotely concentric? They seem to follow almost hyperbolic paths, and I think the curves are reflected about the center of the picture. Meanwhile, the ISS track is very straight.
Is this just a fisheye effect? If so, why does the ISS track, which would normally be sinusoidal (not hyperbolic) appear straight instead of smoothly curved or even "bent" by the effect.
http://antwrp.gsfc.nasa.gov/apod/ap070818.html
The color in this photo is great (although probably enhanced). Also, it looks like the telescope was moving as the picture was taken. Notice some of the ribs appear translucent.
Did anybody else notice the star trails from the earth's rotation don't appear even remotely concentric? They seem to follow almost hyperbolic paths, and I think the curves are reflected about the center of the picture. Meanwhile, the ISS track is very straight.
Is this just a fisheye effect? If so, why does the ISS track, which would normally be sinusoidal (not hyperbolic) appear straight instead of smoothly curved or even "bent" by the effect.