The quantity measured is not strictly the pure thermal signal rate, but also a part of 1/f noise (see « Telegraph noise » section). Where σ ADU is the standard deviation observed in the difference of two dark frame exposed each T seconds. See also ASI183MM Pro test page, a very new enlarged and performance improved version of ASI290MM-COOL camera. The detector chip (Panasonic origin) used in the AS1600MM cameras is the same one used in the Olympus OM-D E-M1 cameras (the monochrome version). The cameras concerned by this study are the ZW0 model ASI290MM-C00L, ASI1600MM-COOL (CMOS sensor) and the popular ATIK CCD cameras ATIK460EX and ATIK414EX. electronic circuit not in the photo-sensitive side) display high quantum efficiency (QE), is attractive for faint detection applications. In particular, the fact that the IMX290 readout noise (RON) is near 1 electron only give a real potential because this parameter is important in spectrography for detectivity. These detectors represents the state of the art, with performances close to the best scientific CMOS (sCMOS). ![]() ![]() ![]() ![]() The focus is particularly on the Sony IMX290 CMOS detector and Panasonic MN34230PL detector that equips the ZWO cameras referenced ASI290MM and ASI1600MM. For spectrographic applications in particular, I compare the performance of Charge-Coupled Device (CCD) sensor with the latest generation of Complementary Metal Oxide Semiconductor (CMOS) sensors available to amateurs at the date (August 2017).
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