Details

Autor(en) / Beteiligte

• Blitzstein, William
• FRANK BRADSHAW WOOD
• Wood, Frank Bradshaw

Titel

The Newton Lacy Pierce Photometer: A Photoelectric Photometer Designed for Variable Star Observations

Ist Teil von

• The Present and Future of the Telescope of Moderate Size, 2016, p.95-110

Auflage

508.98

Ort / Verlag

Philadelphia: University of Pennsylvania Press, Inc

Erscheinungsjahr

2016

Link zum Volltext

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• The Pierce Photometer, Figures 1, 2, and 3, is designed specifically for automatic photometry of variable stars with the aims of minimizing errors resulting from sky transparency variations, of increasing the number of observations per unit time, and of recording of data in the most suitable form for analysis. These aims are achieved by the following techniques: (1) simultaneous photometry of variable and comparison star: (2) digital indication of relative light intensities by means of pulse-counting methods; (3) automatic recording of data by printing on paper tape; (4) automatic sequencing of the required operations; and (5) timing in units of