How do SX cameras compare to DSLRs for astro-imaging?
There are several important features of the large format SXVF cameras that make them better than DSLRs for astronomy: • The cooling of the CCD is important and makes low noise exposures much more practical. • The slower optimised readout of the SXVF CCD gives less readout noise. • The images are downloaded as raw 16 bit data, so the full dynamic range and sensitivity are maintained. • The SXVF does not incorporate an infrared blocking filter and so the full near IR and H-alpha performance is available. • The SXVF is compatible with the SXV guide camera and AO unit. • The ‘T’ thread mount with adjustable CCD tip/tilt permits the camera to be accurately aligned with the optics. • The cylindrical profile makes it compatible with prime focus optical systems.
