T2-1.25″ Filter adapter


SKU: ZWO-T2-1.25-3 Category:

Product Description

Technical Parameter:

Name: T2-1.25″ Filter adapter

Thread: outer M42*0.75 male thread, inner M28.5*0.6 female thread



Before first usage of this product read manuals and install correct drivers and software.


  • Fast Shipping(amount ≧ 299USD) for free
  • Fast Shipping(amount < 299USD) : $20.00
  • Free Shipping(amount < 299USD) (Air Mail, 3-4 weeks) (Free)


  1. Fast Shipping: we will choose DHL, UPS, TNT, EMS etc to deliver it. Usually you will get your package in one week. We provide free fast shipping for order ≧ $299 or charge extra $20 for order < $299.
  2. Free Shipping: we will ship via DGM or China Post Registered Air Mail. It usually costs 2-3 weeks to reach US or Europe and costs 3-4 weeks to reach far places.
  3. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  4. Customers from Russia need to provide the name of your company.

Tracking site:

DGM: http://webtrack.dhlglobalmail.com/?locale=en-US

China air mail: http://www.17track.net/en


  • The price list on our website is USD without tax.
  • Please note that buyers areliable to pay tax involved, such as Import tax, VAT , customs handling fee, etc. The additional fees may be collected at time of delivery by courier.
  • For best local service we advise customers buy our cameras form local dealers.

Warranty and Return Policy

  • We provide 2-year warranty for our products, we will offer the repair service for free or replace for free if the camera doesn’t work within warranty period. After the warranty period, we will continue to provide repair support and service on a charged basis.
  • This warranty does not apply to damage that occurred as a result of abuse or misuse, or caused by a fall or any other transportation failures after purchase.
  • Customer must pay for shipping when shipping the camera back for repair or replacement
  • If you get a faulty camera, please contact us as soon as possible though email: info@zwoptical.com. Please describe the problem in detail and we will do our best to help you solve the problem. Most instances perceived problems are simply bad driver install or software configuration.
  • For customers who bought the camera from our dealer, dealer is responsible for the customer service for you.

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

  1. :

    Does it fit in a 120mm?

    • Sam Wen



  2. :

    Can I know the dimensions of this filter adapter? Internal and external diameter, and the size and position of the holes with respect to the camera?

    • Sam Wen


      the internal is M28.5*0.6 thread and out side is T2
      the holes is just to let you screw it to T2 female easily

  3. :

    Does it fit ASI 178MM?

    • Sam Wen


      yes, ASI178MM come with one

  4. :


    I have two questions:

    1. does it fit to the ASI 1600 MC (color)?
    2. the window which is included in ASI 1600 MC (color) is transparent for IR? (I do not mean the protective window of the chip but that one which is removable)

    Thanks & best regards

    • Sam Wen


      1600MC already include this accessory
      you need one extra 1.25″ IR-CUT filter for 1600MC

  5. :

    Hi, Sam,

    Do I need this adapter in order to mount the IR 850nm Pass Filter – 1.25″ on ASI290MC ?

    • Sean Wang


      You can use T-adapter which come with ASI290MC. this one is not necessary.

  6. :

    I suppose this adapter should fit to adapt an ASI224MC, with an 1,25″ filter on a celestron T-adapter-MAK ?
    Thanks in advance !

    • Sean Wang


      Yes, I think so.

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