Hi Ken,
I also am very fond of the Deep Sky Hubble "shots".
The field of view for the Deep SKY shots is approx the area of sky covered by a small grain of sand held at arms length.
So next time when under a clear sky take the time to hold a grain of sand at arms length and imagine that behind that grain are thousands of galaxies and no matter upon what trajectory you hold your arm that gain of sand will hide thousands of galaxies... even if the Moon or Sun is in the way behind them we can imagine thousands of galaxies behind our grain of sand.
AND realize this also ... our deep sky shots are limited to the observable Universe (say approx 14 billion light years diameter) but beyond our observable universe there is even more Universe
.....the Universe is thought to be some 160 billion light years in diameter (I have read various estimates but the fact is it is much bigger than we can observe)....and so there are no doubt thousands more galaxies behind our grain of sand that we will never see).... in fact if one could photograph all galaxies out to the very edge of the universe (if there is an outer edge at all
) I am sure a deep field shot would simply appear white all over because there would simply be so many galaxies.
alex.
