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Recent Posts

  • JWST is Powerful Enough to See a Variety of Biosignatures in Exoplanets
  • Research helps pave way for first manned mission to Mars
  • Nuclear fusion will not be regulated the same way as nuclear fission
  • “Building Blocks of Life” Discovered in Meteorite That Crash Landed in England
  • Astronomers discover metal-rich galaxy in early universe
  • Unexpected New Ring System Discovered in Our Own Solar System
  • Astronomers discover eight new super-hot stars
  • More funding for OzGrav
  • Cosmological enigma of Milky Way’s satellite galaxies solved
  • After Artemis 1, it will take NASA 2 years to send astronauts to the moon. Why so long?

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CMOS vs CCD in the field of spectrography

By Earl on 10 Sep 2017 on No Comments

Very detailed article about the differences between CMOS and CCD cameras. 

 

Comparison of CMOS and CCD in the field of spectrography

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).

 The focus is particularly on the Sony IMX290 CMOS detector and Panasonic MN34230PL detector that equips the ZWO cameras referenced ASI290MM and ASI1600MM. These detectors represents the state of the art, with performances close to the best scientific CMOS (sCMOS). 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. Also, this backside sensor type (i.e. electronic circuit not in the photo-sensitive side) display high quantum efficiency (QE), is attractive for faint detection applications.

 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. 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).

Source: www.astrosurf.com/buil/CMOSvsCCD/index.html

 

Astrophotography

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