28 new variable stars were discovered by the Semi-Automatic Variability Search sky survey operating at the Astronomical Observatory of the Nicolaus Copernicus University in Piwnice, near Torun. Observations were gathered while monitoring 23 selected fields covering 138 square degrees of the northern hemisphere between September 2003 and January 2004. Detailed list of fields is presented in the Monitored Fields section. About 18.000 stars brighter than 13 mag were observed in near-Johnson V band. A list of the new variable stars is presented in a table below.

New variables
SAVS ID	Other ID	Vmax	Amp	Period	Type
004430+564550 004534+561626 004611+571305 012728+290618 013237+615811 013333+613329 022430+350810 022708+342319 022841+342948 085324+564910 085744+524727 085759+524041 085819+522627 213927+271556 223446+581804 223949+583254 224203+580404 224621+595731 224712+595834 224823+602417 225956+350948 230131+304427 230310+342508 230623+340932 230915+341924 231034+314253 232358+313933 232629+312040	GSC 3663-913 C27 GSC 3663-2412 GSC 1754-1133 BD+61 285 BD+60 265 GSC 2331-731 GSC 2331-960 GSC 2331-1491 HD 237760 GSC 3805-1092 HD 233586 GSC 3423-745 BD+26 4227 GSC 3995-1441 HD 240017 GSC 3992-80 GSC 3996-312 GSC 3996-574 GSC 4265-193 IRAS 22575+3453 GSC 2750-854 GSC 2758-1820 GSC 2759-1917 GSC 2759-1657 GSC 2751-1007 GSC 2752-1159 GSC 2765-348	9.81 11.29 10.81 10.79 9.35 8.51 12.14 11.69 10.91 9.35 10.95 10.28 10.73 9.81 9.97 9.38 10.14 11.28 12.13 12.09 11.03 10.66 12.40 11.50 10.93 12.34 11.49 12.04	0.18 0.45 0.32 0.33 0.10 0.21 0.48 0.38 0.34 0.48 1.40 0.29 0.97 0.20 0.31 0.50 0.19 0.27 0.34 0.64 1.83 0.40 0.58 0.48 0.47 0.51 0.63 0.62	57.61 ... ... 0.491495 0.67410 92.6 0.36907 3.1078 ... ... ... ... 101.7 ... 1.955103 3.09209 ... 3.0332 0.425526 4.27785 ... 0.471653 0.318833 ... ... 0.417461 50.11 0.28351	SR MISC MISC EB BCEP SR EB DCEP: MISC MISC MISC MISC SR MISC EA EA MISC DCEP EW DCEP M: EA/EB RRAB MISC MISC EW SRD EW
SAVS ID - identifier consisted of Right Ascension and Declination of a star calculated for J2000.0. Other ID - cross-identification with other catalogs. Vmax - max brightness in V band. Amp - amplitude of variation. Period - period of variability in days. Type - type of variability in GCVS convention.

The stars which variability type cannot be resolved with our photometric data (mostly long-term red irregular or semi-regular variables), were classified as "miscellaneous" and marked with MISC. Light curves in near V filter of new variables are shown in Figures below. For regular periodic variables phased light curves are displayed. For long-term variables the data points were averaged over single nights and the standard deviation was taken as the near V magnitude error estimate. The original photometric data are available in the New Variables section.

For some of the new variables additional spectral observations were performed with the 0.9m Schmidt-Cassegrain telescope equipped with the Richardson spectrograph and a Wright CCD camera. Using the 600 gr/mm grating we obtained spectra between 3800 and 5800 A with 2 A/pix reciprocal dispersion. Full results are presented in the published paper IBVS5518.

SAVS 225956+350948 (the infrared source IRAS 22575+3453) was observed as gradually fading object changing its brightness from about 11 mag at the beginning of monitoring. Near HJD 2452955 it became out of range of our instrument and was not detected in later CCD frames. It is possible that SAVS 225956+3509483 is a faint variable of Mira type. The higher resolution spectrum of this star obtained with 1200 gr/mm grating and covering spectral range between 5800 and 6800 A (reciprocal dispersion of 1 A/pix) shows strong H_alpha emission line.