ZWO LRGB Filters-1.25-inch

$88.00

LRGB filters optimized for high precision astrophotography and correct colours for all types of objects.

SKU: ZWO-LRGB1.25 Category:

Product Description

zwo-lrgb-filters1-460x460

ZWO LRGB Set

  • Schott substrate material
  • Thickness 1.1mm
  • Fine-optically polished to ensure accurate 1/4 wavefront
  • 90% transmission at passband
  • Infrared wavelength 700-1100nm cut-off
  • Precision off-band blocking
  • Multi-layers anti-reflection coating

 

here is the the transmission curve

LRGB-20150308

Shipping

  • 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

Introduction

  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

Tax

  • 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

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    To what focal ratio are these filters parfocal to? What are the tolerances of the filter thickness?




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    • Sam Wen

      :

      the tolerances of the filter thickness is around 0.05mm
      parfocal depends on optics




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  2. Avatar

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    Would these 1.25 filters work well with the ASI290MM on an Edge C11?




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    • Sam Wen

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      of course




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  3. Avatar

    :

    hello , i am interested in buying this filter set but I am confussed with the curves of G and R color.. it seems to cut some wavelengths near the Na/Hg region …but not in the center of these lines..what is going on?
    What the deference of these filters and Asi1600-LRGB set?
    thank you in advance




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    • Sam Wen

      :

      this is recommend for planetary imaging
      but the new one is for DSO imaging




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  4. Avatar

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    Is it possible to view data on the % Transmittance and Passbands by wavelength for these filters?




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    • Sam Wen

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      just updated the description include more detail




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  5. Avatar

    :

    Hi Sam,

    Are these filters parfocal or some focus adjustement is needed for RGB imaging?

    Thanks in advance!




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    • Sam Wen

      :

      Yes, they are the same thickness 1.1mm and parfocal




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  6. Avatar

    :

    Would I still require a uv/ir filter with these




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    • Sam Wen

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      no, the L filter = IR/UV_CUT filter




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  7. Avatar

    :

    Plase let me know the thickness of glass.




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    • Sam Wen

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      it’s 1.1mm thickness




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