Visual Observations of XY Lyrae and CH Cygni
Volume 19 number 1 (1990)
- Jerzy Speil
- Zamek Ksiaz
Abstract
Presented are the results of visual observations of the irregular variable XY Lyrae during the last 15 years, and of the symbiotic star CH Cygni during the past six years. The observations of CH Cygni show deep minima in 1988 and 1990.