Bubble Level of NEW 1.25″ ADC (Atmospheric Dispersion Corrector)


SKU: ZWO-BubbleLevel Category:

Product Description

ZWO New Atmospheric Dispersion Corrector is used to reduce the effect of atmospheric dispersion on lunar and planetary images




The Bubble Level can help you to find the ‘zero’ position more precisely.

if your old ADC does not have it,  you can buy one ; )







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)

If you can’t get the air mail package after 4 weeks, please let us know ASAP: info@zwoptical.com


  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 within warranty period. After the warranty period, we will continue to provide repair support and service on a charged basis. We do not provide any replacement unless ZWO confirmed the product is DOA (Dead On Arrival).
  • 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 question, answer or comment? Post here!

  1. Avatar


    Does this work for both alt-az and equatorial-mounted telescopes?


    • Sean Wang


      yes, except newtonian.


  2. Avatar

    (verified owner):

    Hi Sam,

    I just received the bubble level for my original ZWO ADC. The white thumb screw needs to be parallel to the horizon for the bubble to work. Should the two ADC adjustment levers start out to be parallel to the horizon and adjusted from there? I somehow was thinking the two levers should start out perpendicular to the horizon (vertical up or down) and be adjusted from there. If I use the white thumbscrew on the bubble level to determine the starting point like your instruction manual says, the two levers must be horizontal to the horizon. Right? Is there a front or back to the ADC?

    All the best!


    • Sean Wang


      Hi James
      Yes, just follow the manual. front or back is all ok, won’t cause any problem.



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