COMMISSION 27 OF THE I. A. U. INFORMATION BULLETIN ON VARIABLE STARS NUMBER 887 Konkoly Observatory Budapest 1974 May 15 OBSERVATIONS OF 2 CSV-STARS ON SKY PATROL PLATES CSV 188 CSV 188 = 245.1937 = DO 25181 (M6) = SVS 783 was discovered by P.P. Parenago (Perem. Zvezdy, Tom. 5. 158. 1938) in 1937. The observed amplitude was 1.4m (10.8m - 12.2m ph). On 88 plates obtained with the Hartha Sky Patrol Camera (JD 2439024- -2442036) I examined the star. Its brightness varies in long waves unperiodically. Temporary quick fluctuations are present. So I classify it as Lb-type. My observed amplitude is 1.0m (10.8m - 11.8m ph). CSV 188 is a very red star. CSV 5990 CSV 5990 = GR 75 was discovered by Romano, G. (Oss.priv.Treviso Pubbl. No. 20. 1960). The discoverer classified the star as an eclipsing binary (10.1m - 11.1m ph) and published 2 minima. Weber, R. confirmed the light-variations (Oss. priv. Treviso Pubbl. No. 23 1960) and published observations containing 2 minima, too. I examined the star on 103 sky patrol plates of the Hartha Observatory (JD.2439024-2442036). It turned out CSV 5990 was, in fact, a bright eclipsing binary with EW-type. The elements are: Min.(hel.) = JD.2439026.542 + 0.909026d * E (EW) (10.43m - 11.13m/ 11.02m ph) Observed Minima JD. (hel.) 24... Epoch O - C m Observer 32477.40 -7204.5 - 0.06d 11.0 Weber,R. (Min.II) 503.39 -7176 + 02 11.0 " 38843.33 - 201.5 - 04 11.2 Romano,G. (Min.II) 950.26 - 84 + 08 10.8 " 39026.537 0 - 005 11.25 Busch,H. 027.451 + 1 000 11.1 " 053.364 29.5 + 005 11.2 " (Min.II) 057.457 34 + 007 11.25 " 058.354 35 - 005 11.1 " 088.364 68 + 007 11.2 " 41595.458 2826 + 008 11.2 " 596.354 2827 - 006 11.1 " 602.274 2833.5 + 002 11.1 " (Min.II) 42036.312 3311 - 014 11.2 " Further particulars will be published in "Mitt. der Bruno-H.-Burgel- Sternwarte" Hartha, Heft 7. HELMUT BUSCH Bruno-H.-Burgel-Sternwarte Hartha OBSERVATIONS OF 6 CSV-STARS ON SKY PATROL PLATES CSV 4390 CSV 4390 = SVS 866 was discovered by Fadeeva, S. (Perem. Zvezdy, Tom 5. 206. 1938) in 1937, who found slow variations with amplitude 0.8m (11.7m - 12.5m ph). I examined the star on 93 sky patrol plates of Hartha Observatory (JD.2438882-2441570) and confirmed Fadeeva's observations. The star is showing slow light-variations between 11.8m - 12.6m ph. The comparison stars utilized by Fadeeva were taken over. CSV 5848 CSV 5848 = BV 293 = BD 51d0042 (9.2) = HD 1519 (Ma) was discovered by Strohmeier and Knigge in 1960; 10.5m - 11.0m ph. (Verof.Sternw. Bamberg Bd. 5). On 173 sky patrol plates of Hartha Observatory I examined the light- variations (JD. 2436985 - 2442036). CSV 5848 is a star of Lb-type. The light-variations are between 10.50m and 11.40m ph. CSV 5849 CSV 5849 = GR 28 was discovered by Romano, G. in 1958.; 11.7m - 12.3m ph. (Oss. priv. Treviso Pubbl. No. 14, 1958). I examined the star on 171 sky patrol plates (JD 2436985-2442036). Unperiodical light-variations were observed. The star is not noticeably coloured. The type is probably Isa. CSV 5867 CSV 5867 = Wr 16 is a variable star discovered by Weber, R. in 1957; 10.8m - 12.0m ph. (J. Observateurs Vol. 41 No. 4. 74; 1958). The discoverer found EA-type. I examined this star on 231 sky patrol plates (JD.2439024-2442036). CSV 5867 is an EW-star with the following elements: Min.(hel.) = JD 2439029.461 + 0.23368912d * E (EW) 11.20m - 11.94m/ 11.94m ph Observed Minima Min. hel. 24 ... Epoch O - C 39029.465 0 0.000d 052.364 98 +0.001 056.346 115 + 008 .455 115.5 000 Min.II 057.386 119.5 - 001 Min.II 061.369 136.5 + 007 Min.II 088.363 252 + 009 387.599 1532.5 + 006 Min.II 388.416 1536 + 006 436.316 1741 - 001 40483.477 6222 - 001 41159.429 9114.5 + 006 Min.II. 249.285 9499 + 007 .398 9499.5 + 004 Min.II 251.264 9507.5 + 001 Min.II .382 9508 + 002 595.369 10980 - 002 596.303 10984 - 002 598.289 10992.5 - 003 Min.II .417 10993 + 009 .521 10993.5 - 004 Min.II 599.348 10997 + 005 602.266 11009.5 + 002 Min.II 959.342 12537.5 + 002 Min.II 960.279 12541.5 + 003 Min.II 973.367 12597.5 + 004 Min.II 42036.346 12867 + 004 CSV 5887 CSV 5887 - GR 88 was discovered in 1962 by Romano, G. (Oss. priv. Treviso Pubbl. No. 29, 1962). Weber, R. confirmed the light-variation (Comm. 27. I.A.U. Inf. Bull. Var. Stars No. 3, 1962). On 139 sky patrol plates (Hartha Observatory) I examined this star (JD. 2436895-2442036). The variations are between the limits 11.50m and 12.75m ph. The light variations are quick with standstills in minimum light. My series of observations yielded the same unperiodical light fluctuations as obtained by Romano. CSV 5887 is not coloured. It belongs to the Isa-type. CSV 5904 CSV 5904 = BD 60d201 = Wr 54 was discovered by Weber, R. in 1958 (J. Observateurs Vol. 41 No. 4. 74. 1958). The discoverer found E-type (9.0m - 9.0m ph). I examined this star on 135 sky patrol plates (JD. 2436895-2441598). CSV 5904 is coloured. Variations are irregular between 9.44m and 10.01m ph. The star is an Isb-type variable. Further particulars will be published in "Mitt. der Bruno-H.-Burgel- Sternwarte" Hartha, Heft 7. KLAUS HAUSSLER Bruno-H.-Burgel-Sternwarte Hartha