Photo detail

Camera Maker Nikon Corporation Camera Model NIKON D90
Aperture f/22 Color Space sRGB
Exposure Value 1 EV Exposure Program Aperture Priority
Exposure Time 10 sec Flash No Flash
Focal Length 18 mm ISO 200
Metering Mode Pattern Date/Time 2017:10:13 18:12:54
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 1.41
Caption While this concave mirror was targeted towards focusing the Sun's rays for burning things in the focus, this along with a number of other inventions in the collection would lend themselves well to creating telescopes.