DeF&Err Calculator
The tool is to benchmark the family of sky scanners with different field of views. We have shown in the papers below that vertical illuminances retrieved from some commercially available sky scanners suffer from uncertainty, while inaccuracy can be several tens of percent if instrumental field of view exceeds 10°. If you use DeF&Err Calculator, we request that you reference the papers below:- Kómar, L., Kocifaj, M. (2014). Uncertainty of daylight illuminance on vertical building facades when determined from sky scanner data: A numerical study. Solar Energy 110 (2014), p. 15-21.
- Kómar, L., Kocifaj, M. (2014). On the uncertainty of sky scanner data for determination of vertical illuminance Lumen V4 Proceedings, Visegrád, Hungary 2014.