COMMISSION 27 OF THE I. A. U.
         INFORMATION BULLETIN ON VARIABLE STARS
                     Number 1501


                                 Konkoly Observatory
                                 Budapest
                                 1978 November 9




OBSERVATIONS OF 44i Boo WITH THE NEW 48 INCH REFLECTOR OF THE
    NATIONAL OBSERVATORY OF ATHENS AT KRYONERION, GREECE


    Photoelectric observations of 44i Boo were made on April
(5-18) of this year during a program of four-colour photometry
on some eclipsing binaries. The new 48 inch Cassegrain reflector 
of Kryonerion Station (G. Contopoulos and C. Banos, 1976)
was used, together with the two beam, multi-mode, nebular stellar
photometer (C. Goudis and J. Meaburn, 1973) of the National 
Observatory of Athens.
    The four filters which have been used are in close accordance 
with the standard colour system (U,B,V,R).
    The calculations and reduction of the observations were
based on the method of "Photoelectric Reduction" by R. Hardie
(1962). Thirty nine standard stars, given in the Naval Observatory 
Catalogue (1968) and in the catalogue of Iriarte et al.
(1965), were used for the calibration.
    The following results for the times of minima were found:


     H.J.D. (min)   Type of Magnitude   Colours
     2440000+         Min.      V       B-V  V-R
     ------------------------------------------------
     3614.3611         s       6.91   +0.55 0.26
     3614.5000         p       6.98   +0.58 0.31
     3615.5710         p       7.02   +0.55 0.31
     ------------------------------------------------
    The obtained light curves will be published soon.




                        P. ROVITHIS
                  National Observatory of Athens
                    Athens 306, Greece

                       H. ROVITHIS-LIVANIOU
                  Dept. of Astronomy, Athens University
                  Panepistimiopolis, Athens 621, Greece



References:

Contopoulos, G., and Banos, C.: 1976, Sky and Telescope, 51, 154 [BIBCODE 1976S&T....51..154C ]
Goudis, C., and Meaburn, J.: 1973, Astrophys, and Sp. Sci. 20, 149 [BIBCODE 1973Ap&SS..20..149G ]
Hardie, R.H.: 1962, Astronomical Techniques, Stars and Stellar
     Systems Vol.II, ed. Hiltner, W.A., The Univ.of Chicago Press
Iriarte, B.et al.: 1965, Sky and Telescope, 30, 21 [BIBCODE 1965S&T....30...21I ]
Blanco, V.M. et al.: Publ. of the U.S.Naval Observatory, Vol. XXI,
     Washington, 1968 [BIBCODE 1968PUSNO..21....1B ]