Abstract
Photometric, spectral, and polarimetric observations of FG Sge during the stage of increasing activity in its R Coronae Borealis type variability are presented and analyzed. a weakening of the current level of rare transient states of maximum brightness is interpreted as a consequence of increasing optical thickness of a permanent circumstellar envelope. The brightness of the He1-5 nebula in the instrumental system in the Uc and V bands is 20m.69±0m.13 and 23m.01±0m.58 from a square arc second, respectively. Luminosity was not detected in the R, B, and Ic bands.
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