ZWO 1/3″ 2.1mm 150 degree lens

Do you have question, answer or comment? Post here!

1. 

   Possberg Claus – March 3, 2020:

   Can you support it as an additional image channel in ASAI Pro? Would be very useful for remote application to have a look to the sky (clouds etc)?

   
   
   
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     Katherine Tsai – March 4, 2020:

     Thanks for your suggestion, I will convey your message to our devs.

     
     
     
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2. 

   Huw – March 8, 2019:

   Can I use this lens on asi183mc color? if not, can you recommend a fisheye lens for asi183mc color? Thanks a lot!

   
   
   
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     Katherine Tsai – March 15, 2019:

     183 sensor is too big for fisheye lens.

     
     
     
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3. 

   Nick – October 16, 2018:

   I got one of these with my ASI290MM …..what is this lense used for? There is nothing in the manual that explains it,s purpose

   Thanks

   
   
   
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     Sean Wang – October 16, 2018:

     It’s a wide angle lens, for all-sky preview and check the camera. It’s nothing to do with planetary imaging.

     
     
     
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4. 

   Stephen R – October 15, 2018:

   Do you sell C lenses for cooled cameras? I am getting the 178MC-cooled.

   
   
   
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     Sam Wen – October 16, 2018:

     no, but you can order many from market

     
     
     
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5. 

   Bartron (verified owner) – July 11, 2017:

   What is the f-ratio?

   
   
   
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     Sam Wen – July 13, 2017:

     f2.0

     
     
     
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6. 

   Ben Stew – May 28, 2017:

   I never got one with my ASI290MM-cool. But I did get one with my ASI120mm, would it still work with the cooled version?

   
   
   
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     Sam Wen – June 1, 2017:

     this is CS lens and won’t work on our cooled cameras
     you need C lens to work with cooled cameras

     
     
     
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7. 

   Ian – May 26, 2017:

   minimum focus distance this lens can achieve when properly mounted to a 1/3″ sensor eyepiece camera with the correct spacing?

   Thanks

   
   
   
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     Sam Wen – May 27, 2017:

     this is CS lens
     CS is standard interface
     so if you camera have CS mount, you can mount it

     
     
     
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8. 

   Ian – May 22, 2017:

   Oh I forgot to mention I also have a zwo1600mm-c, so if any of your lens can fit on to that and still fit inside the draw tube that would be great, keep it in the family

   
   
   
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     Sam Wen – May 25, 2017:

     this lens is only for 1/3″ sensor, 1600’s sensor is too big

     
     
     
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9. 

   Ian Price – May 22, 2017:

   Does this have a C or CS thread on the back of it?

   I’m interested in using it with my guide cam to inspect my primary & secondary mirror alignment. Guide cam isn’t from zwo but has a C thread adaptor with I think 17.5mm back focus. I also have a low profile 2-1.25″ adaptor so it should fit in the draw tube even if the lens and focus knob is wider than 1.25″

   
   
   
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     Sam Wen – May 25, 2017:

     yes, this is CS lens, you need 5mm extender to use it on C mount camera

     
     
     
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10. 

    Ben stew – April 29, 2017:

    There’s no way of using this on the ASI290?

    
    
    
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      Sam Wen – May 5, 2017:

      ASI290 come with this lens

      
      
      
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