Optical observations of NGC 1156 galaxy in narrowband [SII] and Hα filters

We present observations of a Magellanic-type dwarf irregular galaxy NGC 1156 in narrow band [SII] and Hα filters, carried out in November 2015, with the 2 m RCC telescope at Rozhen National Astronomical Observatory in Bulgaria. Although our observations were with the intention to find new extragalactic supernova remnant candidates, we were successful in the detection of 59 HII regions. We give luminosity function and size distribution for the detected HII regions. Also, we found that relation between Hα luminosity and radius of HII regions in NGC 1156 has the slope of 2:7 ± 0:2 in logarithmic presentation, which is in good agreement with theoretical prediction for ionization-bounded HII regions.