Dah Professor: The Dark Skies of Texas
Dah Professor: Brown and Blue
Dah Professor: Mount Livermore, Pine Peak & Brown Mountain
Dah Professor: Mount Locke
Dah Professor: 12 meter Radio Telescope
Dah Professor: The Hobby–Eberly Telescope
Dah Professor: The 30 meter Hobby–Eberly Telescope
Dah Professor: 107" Harlan J. Smith
Dah Professor: A View of Blue Mountain from Mount Locke
Dah Professor: 82" Otto Struve
Dah Professor: 82" Otto Struve
Dah Professor: Mescal Agave
Dah Professor: The 36" VBLA Telescope
Dah Professor: Science & Nature
Dah Professor: Scientists, Whatcha Gonna Do?
Dah Professor: The Bird's Eye View
Dah Professor: Takin' a Day off
Dah Professor: Mount Livermore & Baldy Peak
Dah Professor: Baldy Peak
Dah Professor: Twoleaf 2-up
Dah Professor: Tree Cholla
Dah Professor: Polkadots
Dah Professor: The Road to Old Toothy
Dah Professor: The Chocolate Monster
Dah Professor: Sawtooth Mountain
Dah Professor: Cane Cholla
Dah Professor: Sawtooth Mountain
Dah Professor: Sawtooth Mountain
Dah Professor: Sawtooth Mountain