Notices
Results 1 to 5 of 5

Thread: X-ray Detectors

  1. #1 X-ray Detectors 
    Forum Freshman
    Join Date
    Nov 2008
    Posts
    62
    What kind of X-ray detectors are currently used on an X-ray satellite? I thought that telescopes comprised of two detectors: a PSD (position-sensitive proportional detector) and a CMA (24-channel multiplier array). However I have just read that the detectors used are in fact: a CCD, a microchannel plate detector and an ionization chamber.

    Are any of these three detectors the same as a PSD detector or a CMA detector or are they entirely different? If they are in fact separate types of detector, have the former PSD and CMA detectors been phased out - or do they continue to be used?

    Thank you


    Reply With Quote  
     

  2.  
     

  3. #2 Re: X-ray Detectors 
    Forum Professor
    Join Date
    Nov 2007
    Posts
    1,114
    Quote Originally Posted by emetzner
    What kind of X-ray detectors are currently used on an X-ray satellite? I thought that telescopes comprised of two detectors: a PSD (position-sensitive proportional detector) and a CMA (24-channel multiplier array). However I have just read that the detectors used are in fact: a CCD, a microchannel plate detector and an ionization chamber.


    Are any of these three detectors the same as a PSD detector or a CMA detector or are they entirely different? If they are in fact separate types of detector, have the former PSD and CMA detectors been phased out - or do they continue to be used?

    Thank you
    Try visiting the NASA website and use search. They might have some data on the type and range of your questions.

    Cosmo


    Reply With Quote  
     

  4. #3  
    Moderator Moderator Dishmaster's Avatar
    Join Date
    Apr 2008
    Location
    Heidelberg, Germany
    Posts
    1,624
    Reply With Quote  
     

  5. #4  
    Forum Freshman
    Join Date
    Nov 2008
    Posts
    62
    Thank you very much for getting back to me with these excellent links. I appreciate your help!
    Reply With Quote  
     

  6. #5  
    Forum Freshman
    Join Date
    Nov 2008
    Posts
    62
    On studying these links - along with other relevant websites - it appears there are no standard or general types of detectors used on satellites for x-ray astronomy; am I correct?
    Satellites will use varying kinds of detectors depending on the purpose of their missions. This has brought about confusion because, by reading reports describing the kinds of detectors launched on early satellites and comparing them with modern reports of contemporary satellites and their detectors (which differ from those on the early satellites), I have been unsure whether innovation has led to improvements and replacements in the kinds of 'standard' detectors used. Thus the detectors used on early satellites differ from those on the modern ones because of advancements in technology.

    However, i've concluded that the variation is is not a matter of advancement and replacement but simply a case of whatever detectors are most suited to the mission? If anyone has any knowledge about this, i'd be grateful if you could get back to me and confirm if i'm correct!

    Many thanks
    Reply With Quote  
     

Bookmarks
Bookmarks
Posting Permissions
  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •