The QHY9 is a classic mono camera using the very popular 8.3 Megapixel KAF-8300 CCD sensor. This sensor has a relatively large field of view for its price, and good QE for deep sky imaging. The peak QE is 56%, and it has 48% QE at the wavelength of H-alpha.
Then QHY9 has two-stage TEC with a typical delta T of -45C below ambient. This offers outstanding thermal noise control. Compared to competing models, the QHY9 offers -20 to -25 degrees of additional cooling. The QHY9 give you excellent dark current noise reduction even in long exposures taken on a hot summer night. The model QHY9 is also a round design, more appropriately suited for use in Hyperstar telescopes.
The QHY9 is packaged with QHY’s new QHYCFW2-S filter wheel for 36mm unmounted filters.
Note: QHY9 was released in 2008. It was modified in mechanical design in 2013. Currently we are selling the new version.The modification includes the front case, the air socket connection to chamber and the screw holes for cable clip.