The AAVSO Photoelectric Photometry (PEP) Section
Unlike electronic cameras, photoelectric photometers have only a single sensor element - one large "pixel." Instead of taking a picture of a variable star with its comparison, the PEP observer aims separately at each, repeatedly sampling both stars.
Photometry (astronomy) - Wikipedia
Historically, photometry in the near-infrared through short-wavelength ultra-violet was done with a photoelectric photometer, an instrument that measured the light intensity of a single object by directing its light onto a photosensitive cell like a photomultiplier tube. [4]
photoelectric photometry - aavso
Spreadsheet for reducing BVI data (Change Log) Online V band reduction. PEPObs was developed from legacy code used to reduce photoelectric photometry submitted to the AAVSO PEP program. We have retained most of the original fields …
High quality photometry of bright, astrophysically interesting stars. The AAVSO photoelectric section was founded in the late 1970s. We use oldschool technology, but we can
Photoelectric photometry | astronomy | Britannica
In photoelectric photometry, the image of a single star is passed through a small diaphragm in the focal plane of the telescope. After further passing through an appropriate… Read More
Photoelectric Photometer – Illinois Distributed Museum
This photometer was able to achieve 0.01 magnitude precision on the 12-inch telescope by 1909. It represents the first truly quantitative electrical photometry, launching a new era in photometry. The potential of the new photometer was demonstrated with the discovery of a secondary eclipse of the mysterious “Demon Star” Algol .
The true photoelectric era in astronomical photometry began in 1912. Julius Elster and Hans Geitel had experimented with the photoelectric effect from 1889 using
Use a simulated photometer to measure the apparent UBV magnitudes of stars; Make and compare H-R diagrams to find the relationship between absolute and apparent magnitudes;
Our vision: High quality photometry of bright, astrophysically interesting stars. The AAVSO photoelectric section was founded in the late 1970s. We use old-school technology, but we can get superior results on bright stars.
Bill Keel's Lecture Notes - Astronomical Techniques - Photometry
Photoelectric photometry is a repetitive task, and has proven well suited to automation. A number of telescopes are in operation performing fully automated photometry. Since variability studies are a particularly important application of photometry, the search for variations and their classification is also important.