ZWO 20nm CH4 Methane filter

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$99.00

SKU: ZWO CH4 Category:

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 & Delivery

Fast Shipping: we will choose DHL, UPS, FedEx etc to deliver it. Usually you will get your package within 15-20 days.

  • Fast Shipping(amount ≧ 199USD) for free
  • Fast Shipping(amount < 199USD) : $30.00 (We do not provide free shipping from now on.)

Introduction

  1. It will take around 60-90 days for shipment via ePacket/China Post Registered Air Mail/EMS, which can’t be guaranteed due to force majeure. If you can’t get the air mail package after 2months, please let us know ASAP: info@zwoptical.com
  2. Customers from Brazil and Chile should leave a message to provide your CPF or CNPJ as your custom needs it.
  3. Customers from Russia need to provide the complete English name with three words as well as the English shipping address.

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 are liable 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 from local dealers.

 

Warranty & Return

1. ZWO hereby declares that it will provide customers with a warranty period of 2 years for ZWO branded products (excluding APO), as per this policy. APO products will be covered by a 1-year free warranty service, starting from the day following the receipt of the product by the customer. For ASIAIR Plus users, the warranty period will commence from the day of device activation.

2. If a User encounters the following Dead on Arrival (DOA) and contacts ZWO within the corresponding time limit to issue the Product purchase invoice and relevant evidence, ZWO will provide door-to-door pick-up service and, as appropriate, after-sale replacement (or partial replacement), repair or return (or partial return) service for the following Products:
1) Product quality problem
Provided that a User detects a quality problem and contacts ZWO within 30 days after receipt of the Products, and ZWO support team confirms that the Products indeed have a quality problem or defect after their inspection, ZWO will provide free replacement service towards such Products;
2) Product transportation problem
Provided that a User finds obvious signs of bubbling, serious overstocking, or deformation on the outer package of the Products upon receipt of the Products, and provides ZWO with pictures of the outer package and proof of receipt within 3 days after receipt of such Products, ZWO support team will verify the actual shipper and determine the responsible party for such transportation problem. In the event that ZWO is the actual shipper, ZWO will be responsible for providing the relevant return or replacement service, however, if the Products are directly sold or transported to the User by an agent of ZWO, the agent will be responsible for providing the relevant return or replacement service.

3. If the Products are under the following circumstances, they are not within the scope of warranty service, ZWO may provide maintenance services to the Users:
1) The Warranty Period of the Products has expired; or
2) The Products are injected into liquid or affected by moisture or corrosion; or
3) The Products are damaged by an external force (such as the broken of the camera protection window glass, the deformation of the product shell, the broken of the USB port, etc.); or
4) Disassembling, repairing by a third party, refurbishment of the Products (such as downloading erroneous firmware) without the written authorization of ZWO; or
5) The product system is modified, or the maintenance notice is lost or changed; or
6) Product quality problem caused by installation not following the requirements or instructions for the Products; or
7) Physical damage or failure of the Products caused by the force majeure (such as strong vibration or extrusion such as flood, fire, earthquake, or thunder stroke); or
8)Damage caused by the improper User operation during the period of shooting or use, such as using without the equipment protection or direct shooting of the sun; or
9) No valid purchase invoice or warranty certificate; or
10) The Products are second-hand products.
Any quality problem with the accessories or other parts of the Products is not a condition for the return or change of the Products, and the User may solely request to replace the accessories with new ones, which shall be handled after verification by ZWO support team.
If the issue with your ZWO product was caused by certain damage (such as severe damage not covered by the 2-year warranty), you might have to pay the replacement value.

4. For the normal repair or replacement of the Products during the Warranty Period, the User will bear the return cost. When returning the Products, Users shall specify the actual reasons for the damage to the Products, and shall provide the corresponding valid certificates, such as pictures or videos, etc.
For the Products that need to be replaced after being confirmed by ZWO in writing, the User shall return the Products with the complete package, together with all accessories, manuals, etc., to the address designated by ZWO.
By sending back the product to ZWO, the User agrees to pay out-of-warranty fees that may arise during the repair process of the product. ZWO will send back the product after charging.

5. If a User encounters any problem during the use of ZWO Products, you may at any time contact ZWO for technical support via ZWO Support.

For the Products that need to be returned for after-sales service, ZWO will provide the corresponding RMA code for reference.
ZWO will not accept any products having no RMA code that have been returned privately without ZWO written confirmation.

6. If a User purchases the ZWO Products from a ZWO agent, the User may contact the ZWO agent directly for the relevant after-sales service.

Do you have question, answer or comment? Post here!

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    I am constantly looking online for posts that can assist me. Thanks!




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    Can I get text data (.dat or excel file) of the spectral response of the filter (not a graph image)?




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      Sorry, we do not provide text data.




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    Can this filter or those of another 1’25 brand that come with thread can be mounted on the efw mini?




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      The CH4 filter can be mounted on the EFW MINI.
      If the third party filter has the same size as the CH4, it can be mounted as well; )




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    Could this be used on a ASI183MM camera?




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      Yes.




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    Hi.
    Is it normal to see a not too dim greenish hue when you look at a bright white light source through the CH4 filter? I hoped to hardly see an extremely dark red hue or even nothong at all.
    Thanks.




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      The wavelength range of light that the CH4 filter can transmit is 890nm, which is invisible to the human eye. Did you see the greenish through your eyes or in the screen?
      You can post your problem on our forum and attach some pictures. So that we can have a good look at this.




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    I have bought CH4 filter and asi 1600mm cooled camera. Can I use this filter on this camera to capture infrared signal from Helix Nebula using RASA 8 telescope or GSO RC8 telescope?




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      Sorry this filter can only capture the methane signal in the infrared signal, it can’t capture the whole infrared signal.




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    1. Would I replace my Uv/ir cut filter with this filter or screw this filter in else where and leave the uv/ir cut filter alone?
    2. The job of this filter is to bring out more detail in the gas giant’s?




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      1.Yes, you need replace your UV/IR cut filter with this filter.
      2.The job of this filter is to bring out more details in CH4 wave band.




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    Hi, I just purchased the ASI290MC camera. It seems these latest versions of this camera do not have the IR cut filter, but instead have the AR window. Is this correct? If so, then can I use this CH-4 Methane filter for Jupiter/Saturn?

    Also, if I wanted to use a light pollution filter as well, then do I need to do separate imaging with each of these two filters and then stack the results together to get the benefit of both?

    Thanks




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      1.Yes, the ASI290MC camera has an AR window.
      2.This CH4 Methane filter can be used for Jupiter/Saturn.
      3.Yes, you need to do separate imaging with each filters.




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    Could this be used on a ASI290MC camera? Without the IR-cut filter I assume.




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      Hi, It is not good for color cameras, in infrared channel, sensitivity of color camera is too low.




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    Hi Sam. Would this CH-4 really be important for imaging Jupiter and Saturn? Should it be used along with your D-21 UV/Cut window as well on my ASI224mc? Or is the D-21 sufficient? I’m using a TeleVue Powermate 2.5 then your ADC, in front of your ASI224. Is that how you would place them? Where would you put the CH-4 with the 1.25 threads? The Powermate 2.5X doesn’t have filter threads!




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    • Sam Wen

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      no, CH4 should work together with AR window
      IRCUT will block CH4 filter, 224 is ok as it come with AR window
      the thread of CH4 filter is M28.5X0.6




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    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)




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    • Sam Wen

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      suppose to be 2mm




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




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