Photo detail

Camera Maker Nikon Corporation Camera Model NIKON D90
Aperture f/4.8 Exposure Value 0 EV
Exposure Program Unknown: 0 Exposure Time 1/60 sec
Flash Flash, Auto-Mode, Return light detected Focal Length 45 mm
ISO 800 Metering Mode Pattern
Date/Time 2014:02:26 17:40:55 Resolution Unit Inch
X Resolution 240 dots per ResolutionUnit Y Resolution 240 dots per ResolutionUnit
Compression Jpeg Compression Contrast 0
Exposure Mode 0 Saturation 0
Scene Type Directly Photographed Sharpness 0
Subject Distance 2.82 Caption Alarm motion sensors installed on either side of the observatory. The downward angle of the fan appears to be enough that opening the roof won't trigger them. We'll have to see about what slewing the telescope does!