... CorMASS (Cornell Massachusetts Slit Spectrograph) is a low-resolution (R~300) prism cross-dispersed NIR Spectrograph. It has been used on the Palomar Observatory 60-inch telescope, the Vatican Observatory 1.8-meter telescope, and the Magellan 6.5-meter telescope but resides at APO until further notice. ... A remotely operated flip mirror allows the use of a slit viewing mode for object placement on the 5.5 x 0.75 arcsecond slit. ... Field of View: 0.75" x 5.7" in slit mode, 10" in slit view mode . ...

... What are mechanisms of secular evolution? ... Internal mechanisms of secular evolution may b e: Ї bar instabilities in dynamically cold disk galaxies , Ї deviations from circular rotation due to non-axisymmetric gravitation p otential effect which may b e produced by planar structures ... gravitational and energetic, effects of nuclear sup ermassive black holes ґ they may provoke as attraction as well expansion, Ї certain gas expansion by galactic winds and fountains, etc ...