Class 1 and class 2 detectors

Discussion in 'General' started by Dale Mais, Aug 19, 2019.

  1. Dale Mais

    Dale Mais Cyanogen Customer

    Joined:
    Jun 1, 2018
    Messages:
    43
    Besides the price what is the difference exactly between class 1 and class 2 detectors?

    Dale Mais
     
  2. Doug

    Doug Staff Member

    Joined:
    Sep 25, 2014
    Messages:
    6,093
    Class 1 sensors have tighter defect classification than Class 2 sensors - typically fewer hot pixels, fewer bad columns, etc.

    Some sensors don't have multiple grades, e.g. KAF-16803 is only available in one standard grade. Others have Class 1 and Class 2. Some sensors from other manufacturers have multiple levels available.

    There is usually also an "engineering grade" option as well, which is a sensor that works but doesn't meet specifications. They are a lot less expensive but the manufacturers often limit quantities to one or two. They are intended to be used during camera design, rather than in products.

    The manufacturer charges a lot more for Class 1, which is why the cameras are more expensive.
     
  3. Colin Haig

    Colin Haig Staff Member

    Joined:
    Oct 27, 2014
    Messages:
    2,372
    Usually professional research applications (professional astronomers, research projects, science instruments) or experienced astrophotographers want Class 1 sensors;
    People who are doing casual imaging are usually very happy with Class 2.
    Also, sometimes "Class 1" is referred to as "Grade 1".
     

Share This Page