A RAPID FILTER CHANGE PHOTOMETER

@inproceedings{Sorvam1975ARF,
  title={A RAPID FILTER CHANGE PHOTOMETER},
  author={John M. Sorvam},
  year={1975}
}
A photometer designed to change filters on a short time scale is described. This device is simple and compact and has proved to be very reliable. Evaluation of the photometer indicates that photometric data can be obtained on many nights ordinarily considered unsuitable for photometry. Key words: instrumentation - photometry