Download ATN PS-7 operator`s manual
Transcript
APPENDIX A (Reference) ESTIMATION OF AMBIENT ILLUMINATION LEVEL Table A-1. Standard Natural Light Conditions and Illumination Values STANDARD NATURAL LIGHT CONDITIONS ILLUMINATION VALUE, LUX Quarter moon 0.05 Full moon 0.30 Late twilight sky 1.00 Twilight sky 10.00 Overcast sky in the daytime 500.00 A-1