ASI 1.25″ Low Profile Cover


ASI 1.25″ Low Profile Cover can  reduce the back focus distance of ASI Cameras  to around 5mm

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Product Description

This adapter can be used on all  uncooled ASI cameras to reduce the back focus distance to around 5mm

so you can focus on some very short back focus scopes such like PST

low profile cover

just unscrew the old cover off and screw in the new one

PS: this new cover can not hold the protect window of ASI174MM/MC, so you need an external 1.25″ filter

low profile cover+camera






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

To support our newest cameras: ASI071 and ASI1600

follow softwares newest version required

SharpCap V2.8.2325 and up

Firecapture V2.5.03 and up





  • 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 above $300 or charge extra $20 for order below $300.
  • Free air mail 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.
  • Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  • Customers from Russia need to provide the name of your company.

Tracking site:


China air mail:


  • 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: 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. :

    What is the thread diameter and pitch?

    • Sam Wen


      It’s M59X0.75

  2. :

    You says “this new cover can hold the protect window of ASI174MM/MC, so you need an external 1.25″ filter”…
    I don’t understand this cover can or can’t hold the protect window of an ASI 174MM ?

    • Sam Wen


      sorry, it should be “cannot”
      so you need extra 1.25″ filter

  3. :

    Is it compatible with the ASI120MM-S camera (

    • Sam Wen



  4. :

    Let me confirm the specification of this.
    (1) Is it usable for ASI174MC ?
    (2) Can I attach 1.25″ reducer on this ?

    • Sam Wen


      yes, you can

  5. :

    Is there any chance to have a T2 version of this low profile adapter? This way it might be directly attached to the mini filter wheel

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