ZWO New LRGB Filters Optimized for ASI1600


SKU: ZWO-LRGB1.25NEW Category:

Product Description

The new  ZWO LRGB Filters  are designed to approximately equalize the flux of ASI1600 mono sensor

Better transmission, Better coating,  Better color separation

Technical Parameter:

Name: ZWO New LRGB Filters Optimized  for ASI1600(4 filters)

Size: 1.25″

Thickness: 5.5mm+3.5mm(thread)

Thread: M28.5*0.6


the RGB color combine weights will be approximately 1:1:1

  • Fine-optically polished to ensure accurate 1/4 wavefront
  • more than 92% transmission at passband
  • Infrared wavelength 700-1100nm cut-off
  • Precision off-band blocking
  • Multi-layers anti-reflection coating
  • Small spectral “gap” to minimize effect of light pollution
  • More parfocal – thickness 1.9+/-0.03 mm

here is the the transmission curve


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:


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. :

    The transmission curve jpg for these filters is confusing. Are these filters discrete OIII, NA, Ha and SII or just better quality LRBG filters?

    • Sam Wen


      it includes the OIII, HA and SII, but not Na

  2. :

    – “it includes the OIII, HA and SII, but not Na”

    Means when using these filters there is no need to buy OIII, HA and SII?

    • Sam Wen


      you need to buy if you wish to do narrow banding imaging

  3. :

    Sorry, but I haven’t understood the answer. The automatic pervodchik badly translates the answer.

  4. :

    Sorry, but I haven’t understood the answer. The machine translator badly translates the answer.

    • Sam Wen


      they are just R G B L filters, not narrow banding filters

  5. :

    Are these filters parfocal or will I need to refocus after swapping?

    • Sam Wen


      there is very small difference depends on the scope and wavelength

  6. :

    Hello Sam,
    I’ve just received my new set of LRGB filters for my new ASI1600MM cooled camera.
    In the box there’s an UV/IR cut filter instead of the Luminence filter. Is the same as an L filter and if not, what is the difference?

    With thanks (Xie xie)!

    • Sam Wen


      L is just the UV/IR cut filter, they are the same

  7. :

    I have a F/5 telescope. To avoid vignetting, it’s better to use 31mm filter. Do you make this same kit (for ASI1600) in 31 mm ?? I can’t found it on your web page?? Thanks!

    • Sam Wen


      our 31mm and 36mm filter will come next month

  8. :

    Will the new 31mm / 36mm filter sets allow full illumination of ASI1600MM with the f/2 Celestron RASA?

    • Sam Wen



  9. :

    Is this good for cooled 174mm too? Can I also use the EFWmini with 174mm?

    • Sam Wen


      of course

  10. :

    Hi, when will you release narrowband filter set (Ha, OIII and SII)?
    Will they come in 1.25″ or 31mm? (31mm will be ok with f/4 scope?)
    What is the estimated price?

    • Sam Wen


      they are already available on our website

  11. :

    Sorry, I was meant to add I am looking at the 1600mm-c as my next camera.

  12. :

    Will these work the same with asi 120 mm in a 6″ f4 astrograph ,as opposed to the other set of filters not optimized for the asi 1600.

    • Sam Wen


      yes, you can use the new one which is better

  13. :

    I forgot it would 1.25″ filters

  14. :

    Is this set better than cheaper LRGB set for ASI120MM-S usage or it doesn’t matter?

    • Sam Wen


      yes, new RGBL is better than the old one

    • Sam Wen


      this new one has better color balance

  15. :

  16. :

    Hi Sam,
    Have you tried these with other brand cameras, like Atik?



    • Sam Wen


      no, but other customer tried

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