Line Asymmetries and Vertical Velocities Observed with a Narrow-Band Filter
Abstract
A Fabry-Perot filter was combined with the Sacramento Peak Universal Birefringent Filter to obtain a filter system with a 20 milli-angstrom band pass. Filtergrams were obtained at disk center in the Ca I line at 6162 angstroms under excellent seeing conditions. This data to measure line profiles of resolved granular features and to make maps of the vertical flow associated with the granulation. In this paper, ensemble average profiles are presented for bright granular features, dark lanes, up-flows and down-flows. The results shown here represent only a very preliminary look at the data set. A time sequence of these shown here represent only a very preliminary look at the data set. A time sequence of these filtergrams is currently being processed and will allow much better separation of effects due to oscillations from those due to the granulation. Reprints; Narrowband filters; Bandpass filters; Unrefringent filters.
Document Details
- Document Type
- Technical Report
- Publication Date
- Jun 20, 1990
- Accession Number
- ADA223996
Entities
People
- Domenico Bonaccini
- Larry November
- Peter Tamblyn
- Stephen L. Keil
Organizations
- Air Force Systems Command