... Parameters . Filters . ... Direct images . ... The SCORPIO-2 project: . Spectral Camera with Optical Reducer for Photometric and Interferometric Observations - 2 . The broad-band glass filters made in SAO RAS are used for the observation in the Johnson-Cousins (UBVRI) photometric system in the direct images mode. The glass filters transmission curves are shown by solid line. ... The filters transmission curves of the `comets' filters measured with the SCORPIO-2 in the F/4 beam. ...

... An estimate the rotation period of cometary nuclei is important for understanding and describing the physical processes of the cometary activity. Unfortunately, the measurements of the rotation periods of the comet nucleus depend on the model assumptions and it is one of the main reasons for the scatter of the estimates given in various articles for a given comet. ... Right: the image of the comet 29P/Schwassmann-Wachmann 1 obtained at the 6-m telescope. ...