SS433: TDS spectra and measurements of the HeII 4686 line.

Observational data from the paper"The radial velocity curve for He II emission cannot be used for component mass determination in SS433" 1. Bcurve.txt is the light curve of SS433 in the B band, used in the paper. 2. The HeII4686.txt contains measurements of the HeII 4686A line. 3. The fits-files contain spectra of SS433 obtained with the TDS spectrograph.The header of the primary extention of the files contain details of observations and quasi-simultaneous photometry, if available: the B, V, R, I magnitudes (keyword [BVRI]MAG); the magnitudes corrected for contribution from spectral lines ([BVRI]MAG_C); Heliocentric Julian Dates of phorometric observetion (HJD[BVRI]MAG). The second extention (named 'merged') contains the fits-table for 1D spectrum of SS433: wave -- heliocentric wavelength (air), A; flux -- flux, erg/(s cm^2 A), may be inaccurate by some factor due to slit losses; SNR -- estimate of signal to noise ratio (after 2021-04-27); cont -- continuum-normalized spectrum; absflux -- flux, erg/(s cm^2 A), corrected for the slit losses by using the simultaneous photometry, if available.