Re: Astrophotography w/ Digital SLR Sensor Sensitivity

On Jan 25, 4:55 pm, "Jeff R." <contact...@xxxxxxx> wrote:
Billy wrote:
I recently began taking images of stars from my Nikon D300 digial SLR
and I'm amazed - when I take the picture I can many more stars in the
image than I can with the naked eye. Does anyone know why this would
happen, could the image sensor be stronger than my eyesight?????

This isn't just a "digital" thing - exactly the same thing happens
(fortunately!) with film.

I have only ever seen (visually - not photographically) the Coal Sack nebula
a couple of times - these when I've been way out bush with carefully
dark-adapted eyes - yet I have managed to photograph it (film) from my
heavily light-polluted Sydney suburban backyard.

It takes exposures of only a couple of seconds to make naked-eye-invisible
stars appear on film.

One of the reasons I enjoy astrophotography so much.

Hint: in order to increase your astro fun, google: "barn door mounts"

--
Jeff R.

Yea, I'm do a one-one thousand, two one-thousand ........up to four
one-thousand using "bulb" and the shutter depressed only 20 to 30
miles outside of the NYC light pollution. I just never look up NE,
which is where the lights from NYC destroy the sky. The amazing images
I took were last night during a chilly brisk clear winter night
pointing up to the S-SW in a dark room with the window open. I could
see maybe 20 stars with my eye, whereas I must have about 100 or more
in the image. I wonder if the other dots were dust on the window
screen. :)
.

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