The QHY5-III 290C uses a SONY STARVIS Exmor R back illuminated CMOS sensor. The Starvis sensor means you can see very dim stars in real time video. The 2.9um pixel size is also idea for planetary imaging.
The ZWO ASI224MC comes with an exciting 1/3″ and 1.2M pixels IMX224 sensor that features SONY Exmor and NIR Technology resulting in extremely low read noise (1.5 e) and high sensitivity, especially in the near IR range. Free delivery to UK, see separate listing for EU sales.
The QHY5-III 290 Mono uses a SONY STARVIS Exmor R back illuminated CMOS sensor. The Starvis sensor allows you to “see” very dim stars in real time video. The QHY5-III 290 can capture mag 9 stars when connected to a 50mm F1.4 C-mount lens. Compared with the IMX236 sensor it has twice the sensitivity to visible light and more than three times in the near infrared.
The QHY21, QHY22 and QHY23 cameras feature Sony’s latest high sensitivity ExviewII CCD sensors: ICX674, ICX694 and ICX814.
These sensors has very high QE (close to 80%) and very low thermal noise.
With dual stage TEC cooling technology these cameras can achieve temperatures 45C below ambient. By comparison with the competition, the 10 to 15C of extra cooling helps ensure great results, even on hot summer nights!