ZWO 20nm CH4 filter – 1.25″

$99.00

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Product Description

 

The ZWO Methane band (CH4) filter is a special filter for photographical use.

Its FWHM is 20nm which is suitable for most IR sensetive color or mono cameras.It can reveal the detail of the target and not too dark.

It is recommended  for planetary imaging such like Jupiter, Saturn and the other planets.

This filter is a 1.25″(31.7mm) filter and comes with an inner filter thread . It is protected in a plastic case.
CH4

Shipping

  • 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:

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 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. :

    What’s the thickness of the glass?
    And height, threads/total?
    That is, will it fit in EFW/EFWmini?
    Thanks.

  2. :

    Took a chance, got one now.
    I measured filter threads to 2,5mm, filter height without threads 5,0mm.
    I see from the EFW/EFWmini product pages, requirements are “threads length shorter than 3mm, height without threads less than 7mm”. All right then.
    Still, would like to know the GLASS THICKNESS. (harder to measure safely)

    • Sam Wen

      :

      suppose to be 2mm

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