Re: Webcam vs DSLR Target Field of View


"Hughes" <eugenhughes@xxxxxxxxx> wrote in message
news:708dc05c-7e9f-49f7-823d-bac6b45cbdf5@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
On Apr 24, 7:08 pm, "whisky-dave" <whisky-d...@xxxxxxxxxxxxxxx> wrote:
"Hughes" <eugenhug...@xxxxxxxxx> wrote in message

I doubt the Hubble space telescope is using a webcam.

What you haven't consider (and which I just realised
today) is that when you take off the lens of a webcam,
and put the ccd in a big telephoto or even Hubble, the
resolution of it is equal to expensive dedicated CCDs or even DSLR

where do you get that idea ?

because the determining factor in getting
the pixel scale in arcsecond is the pixel size. So
if the webcam say has 4 micron and the Hubble
CCD has 4 micron, they would have similar resolution.
Surprise? Well, I was surprised to just learnt it today.

Does that actually mean anything though ?





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