2008-10-14, 05:59
Hello,
I'm not too sure where I have to post this topic, but here it is.
The reason I bought this webcam was to test how well it worked with my telescope (capturing moon and planetary images). The 1600x1200 resolution of the webcam is perfect for moon shots, but it is overkill for planetary images, 640x480 would be more than enough.
When I try to capture in 640x480 mode it seems that the image scale stays the same (the webcam basically uses the entire cmos chip to contruct a 640x480 image. Are pixels being averaged?).
Would it be possible to use the webcam in such a way that only the central part of the CMOS is used to construct the 640x480 resolution (or even small resolutions)? That way I can get the benefit of the higher framerates possible with the lower resolutions and smaller pixelsizes (= higher magnification of the planets -> more detail). Ofcourse I already tried the zoom option of the webcam, but that seems to be a simple interpolation of the current imaging resolution, it does not produce detailed images.
So, would it be possible to use a cropped part of the 1600x1200 cmos chip to get lower resolutions (with the faster framerates)??
I'm not too sure where I have to post this topic, but here it is.
The reason I bought this webcam was to test how well it worked with my telescope (capturing moon and planetary images). The 1600x1200 resolution of the webcam is perfect for moon shots, but it is overkill for planetary images, 640x480 would be more than enough.
When I try to capture in 640x480 mode it seems that the image scale stays the same (the webcam basically uses the entire cmos chip to contruct a 640x480 image. Are pixels being averaged?).
Would it be possible to use the webcam in such a way that only the central part of the CMOS is used to construct the 640x480 resolution (or even small resolutions)? That way I can get the benefit of the higher framerates possible with the lower resolutions and smaller pixelsizes (= higher magnification of the planets -> more detail). Ofcourse I already tried the zoom option of the webcam, but that seems to be a simple interpolation of the current imaging resolution, it does not produce detailed images.
So, would it be possible to use a cropped part of the 1600x1200 cmos chip to get lower resolutions (with the faster framerates)??