On the Influence of ''Red Leak''of Light Filters on the Brightness Estimates of Stars of Late Spectral Types Illustrated by the Observations of Rapid Variability of Symbiotic Stars

• DOI: 10.48550/arxiv.2401.03227
• Publication Date: 2024-01-01
• Authors: G. E. Nikishev; N. A. Maslennikova; А. М. Татарников; K. Yu. Parusov; A. Belinski
• Keywords: Spectral index

The results of modeling the dependence red leak photometric filters on various factors (color index V-R, luminosity class, interstellar reddening, airmass and PWV) during observations stars are presented. error arising from not taking into account in case used 0.6-m telescope CMO SAI can amount to 0.6-0.8 mag for late stars. Algorithms reducing observational data presented U B. rapid variability two symbiotic CH Cyg SU Lyn with cold components very spectral types For Cyg, was detected both observation dates. Taking effect, amplitude B band 0.10 November 6, 2019 0.19 December 15, 2022, a characteristic time about 20 minutes. Lyn, no brightness February 2, 2023 (with an accuracy 0.003 mag).