None of the photos here were altered in Photoshop. I only
used some small brightness/contrast options to make the scans look as close
to the slides (and my memory) as possible. I also did some
slight color balance to counter the slight green and
blue casts that film has.
In the desert at high altitudes, the sky is very dark. I often used
a wide angle lens with a polarizing filter which increased the effect of
darkening the skies and punched out some of the colors.
Also almost all the landscape shots are on Velvia. Any shots with people
and most of the city shots were taken on Provia 100F. The nighttime shots and
a few of the telescope photos were on Kodak 1600 pushed 2.5 stops. (This
accounts for the high contrast in those photos, such as the one
of the dome that looks almost black and white.)