![[About]](images/banabout.gif){kind=small}
The problem and approach for measuring haze. Related web sites.
Current results, links, recognition of contributions, summaries of data, numbers of contributors....
![[Haze 101]](images/ban101.gif){kind=small}
What causes haze, and why measure it. How to build the TERC VHS-1 sun photometer.
![[Data Collection]](images/bandata.gif){kind=small}
View other people's data. How to calibrate your instrument. How to make observations.
![[Forrest's Corner]](images/bancorner.gif){kind=small}
Questions and answers directly with amateur scientist and Haze-SPAN founder, Forest Mims III. Frequently Asked Questions (FAQ).