A 512-Channel Photodiode Array For Solar Observations

Publisher Website
Google Scholar
Abstract
The Sacramento Peak Observatory has developed and placed in operation an array of photodiodes in the focal plane of a high dispersion spectrograph. The diodes record solar phenomena in the 4000 - 11000 Å range. Signals from the diodes are digitized and computer processed into photographs or other output forms in real time. By varying the placement of 32-diode blocks in the spectrograph, any combination of wavelengths may be used in the construction of spectrograms, spectroheliograms, magnetograms and tachograms. Spatial resolutions vary between 1/2 and 2 arcsec with a spectral resolution of up to 0.02 Å. The signal-to-noise ratio for a single observation is limited in most cases by scintillation to 300:1. Several examples of computer processed photograms are given.© (1974) COPYRIGHT SPIE--The International Society for Optical Engineering. Downloading of the abstract is permitted for personal use only.

This publication has 0 references indexed in Scilit: