ZWO EFW (5 x 2″/7 x 2″)

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$299.00$399.00

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Product Description

ZWO EFW (5 x 2″or 7 x 2″)

Product weight:EFW 5 x 2″=500g / EFW 7 x 2″=650g

Power supply:USB2.0

Control Mode: ASCOM and SDK

Driver:Free of driver

EFW2-1

The filter wheel body is CNC milled from an aircraft graded aluminum block.

Excellent craftsmanship, very thin and light with only 20mm thickness.

The core part of our EFW is the stepper motor which has reliable performance and quality that comes from NPM, Japan.

We have two specifications for EFW2”:
TYPE1: EFW5X2”
TYPE2: EFW7X2”

  2″ Thread-In Filters or

50.4mm ±0.5mm Unmounted Filters can be used 

The 2” Electronic Filter Wheel can be rotated in both counter clockwise and clockwise direction for filter selection.

EFW2-2 EFW2-3

There is no need of multiple cables to power this wheel up, just one USB cable does the trick.The maximum power supply of this EFW is approximately 120mAh @ 5V, which can be operated from the Cooled CCD’s USB2.0 port.

When connected to ASI6200, the distance from the filter to the sensor is about 18mm

Our 2″ RGBL filters are recommended to work with ASI6200MM Pro camera, it will offer nearly 1:1:1 RGB color balance.

 

Below requirements must be met while using the 2” filter from third-party.

Requirements for 2inch filter from third party

Filters (not including the threads) must be less than 7.5mm in thickness and less than 50.8mm in diameter. Threads must be less than 2.7mm in thickness.

 

What’s in the box?

1. EFW2*5 or FW2*7 body
2. USB2.0 – 2m cable
3. A bag of M2.5*6 screws (6pcs/ bag)
4. A bag of filter masks for 50mm filters (7pcs/ bag)
5. Phillips screwdriver
6. A bag of M2*4 flat screws (23pcs/ bag)
7. M54M-M48F adapter
8. M54M-M42F adapter

5孔EFW配件(英文)(1) 7孔EFW配件(英文)(1)

Mechanical drawing

EFW2X5-Mechanical drawing(1) EFW2X7-Mechanical drawing(1)

Usage guider:

5 connection methods of ASI6200 to get 55mm back focus length:

https://astronomy-imaging-camera.com/tutorials/5-connection-methods-to-get-55mm-back-focus-length.html

Our website is always updated with the most recent camera drivers as well as software for DSO and planetary imaging. Please make sure the most recent driver and software has been installed before you start shooting:

It is also recommended to read the Manuals first before shooting.

Shipping

Fast Shipping: we will choose DHL, UPS, FedEx etc to deliver it. Usually you will get your package within 7-14 days.

  • Fast Shipping(amount ≧ 199USD) for free
  • Fast Shipping(amount < 199USD) : $20.00 (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 form local dealers.

Warranty and Return Policy

1. ZWO will provide a 2-year free warranty service (Warranty Period) for ZWO products purchased by Users from ZWO (“Products”) in accordance with this Policy, commencing on the day following receipt of the Products by Users. For ASIAIR Plus users, commencing on 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!

  1. Avatar

    :

    I think the manual needs to be updated with the ZWO-EFW-7X2 because it shows that the manual https://astronomy-imaging-camera.com/manuals/EFW_QuickGuide_EN_v2.0.pdf states that Accepts 36mm Filters and not 2″ Filters.
    I thought that I was buying the incorrect ones online today. I Ordered the ZWO-NB7NMD2 and ZWO-LRGB2 for the ZWO 7-Position Electronic Filter Wheel for 2-Inch Filters SKU : ZWO-EFW-7X2 but now I think I am OK.




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      Thanks for reminding, we will update the manual soon.




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  2. Avatar

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    On some pictures on the internet i see that the efw 7×2“ has female m54 both sides but also see you writing that are scews only camera side. Can you confirm that there is no threaded connection to the telescope side?




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    So if I want to buy an 294MM and the 2’Filterwheel do I need to buy anything else or will I be able to mount all of this to my scopes with the included adapters?
    Thanks,Achim




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    is it possible to order separately a second disk holder?
    is it easy to change the disk holder?
    i want to use 2 different set up filters, it can be easier/quicker to change the disk holder instead of remove 5 filters and install 5 others.
    regards




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      Please send email to info@zwoptical.com, my colleague will help you.




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    Can the EFW 5 x 2” be used with the ASI 294 MC?




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    How long do you estimate the back order for 7 position 2″ EFW?
    I prefer to order direct because I read on Cloudy Nights about a recent firmware and ASCOM driver release to address certain issues with repeated unidirectional filter changes. Do you recognize what I am referring to, and will EFW’s shipping for new orders address the issue? Thank you.




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      The 7 position 2″ EFW is currently in stock. You can order now.
      Yes, the new order will address the issue.




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    Will the 2″ Optolong SHO + L-eXtreme filters fit this wheel?




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    Hello,
    can you please specify the maxium filter thickness which is acceptable for the EFW 5×2″?
    And the female M54x0.75 thread in the casing. How long is thread in the casing?
    Thank you very much.




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      The 2″ filters must be less than 7mm in thickness (not including the threads) and threads must be less than 3mm in thickness.




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  9. Avatar

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    Hello I bought 1) ZWO ASI2600mc pro camera and 2) ZWO EFW (5 x 2″).
    But I am unable to connect the asi2600 camera to the 5 x 2″ EFW filter wheel as appropriate adopter is not supplied with neither the camera nor with the EFW filter wheel.
    Also I noticed if I want to hook the ASI2600 with 5 X2″ EFW filter wheel with the screws supplied by EFW, the holes don’t match.
    Could you please help me with this problem please? I need to know if there is an adopter I can buy to hook up asi2600 with 5 X 2″ EFW filter wheel.




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    Hello,
    I have a problem with the 7×2 “filter wheel and the ASI6200MMC:
    If I create a plan with filter change in APT and the filter change is to take place, the recording starts immediately while the filter wheel is still rotating. The subsequent download of the picture remains at “Busy”, but no download is possible! The filter wheel also no longer rotates. To do this, I first have to disconnect the filter wheel and then reconnect it.
    I have already reported this behavior to APT. Unfortunately APT couldn’t help me.
    Has this error already occurred with other users, or is there already a solution for it?
    The newest drivers (ASCOM, etc.) are installed.
    Best wishes
    Dieter




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      Hi Dieter,
      Please test it in ASIStudio to see if this can be reproduced. You can also send us an email to support@zwoptical.com




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  11. Avatar

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    Hello,
    Can the filter wheel accept also filters that are 7 mm thick?




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      Yes, the filter wheel accept 7mm filters.




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    Can your 7 position EFW accept unmounted 50 mm filters that are 3.0 mm +/- 0.1 thick?




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      Yes, your filters can be mounted on the 7 position EFW.




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  13. Avatar

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    Bonjour,

    Pourriez-vous m’indiquez les dimensions back-focus et total en épaisseur des adaptateur fournis avec EFW 7 x 2″
    Could you tell me the back-focus and total thickness dimensions of the adapter supplied with EFW 7 x 2 ″

    M54M-M48F adapter
    M54M-M42F adapter
    M54M-M48F-2 (2mm ?)




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      The back focus is depend on your telescope.
      The total thickness dimensions of these adapters:M54M-M48F adapter(4mm), M54M-M42F adapter(4mm), M54M-M48F-2(10mm).
      But when you attach these adapters to your telescope, they will not increase the thickness.(The M54M-M48F-2 will increase 2mm thickness)




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    (verified owner):

    “Sorry no.
    ASI1600 does not need 2″ filters”

    But if you wanted to use 2″ filters instead of 1.25 could you?

    Thanks




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      2″ filter can be used with 2″ EFW.
      Sorry we currently do not have special adpaters for 2″ filters to connect with ASI1600.
      2″ filter provides M48.5*0.75 male thread. You may need to figure out how to connect with other adapters.




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    It says “Available on backorder” What does that mean? Does it mean that they are assembled when ordered then shipped out? Thanks




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      You can place order now, we will arrange shipping according to the order number.




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  16. Avatar

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    Hi Katherine. Credit to your company for coming out with a nice simple 2″ set of filter-wheels at such a good price!
    We are interested in designing these into some remote astro cameras and other instruments we are designing. But I see the 5 station units are on backorder so I can’t just buy one.
    Would it be possible to get access to 3D CAD data in STEP format for the mechanical parts please? We are going to be working with one F2 system with very high requirements for imaging train stiffness using special filters, and we’d like to do some FEA studies of deflections of your wheel under load. We’d be happy to share these results with ZWO if you are interested.
    Thanks
    Tony Owens




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      I’m sorry we do not provide the filter structure diagram.




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  17. Avatar

    (verified owner):

    One side is fixed with screws you said, but the screws don’t work for the asi294mc pro, so i use the thread. Both sides have threads…. the telescope side also has threads where i connect the spacers and comacorrector. So how do i fix that side with screws if you don’t own an OAG? Since the adapter rings turn freely in the thread on the telescope side?




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      Sorry about that.
      Yes there is thread on both side. You will need a adapter that converts M54 to M42.
      Also you can choose 36mm filter for ASI294MC Pro.




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  18. Avatar

    (verified owner):

    On the camera side the camera stops when it hits the filterwheel, but how about the other side? My adapter rings (on a T2-T2 ring) and spacers can turn freely until inside the filterwheel. How do i stop it from fully inserting in the filterwheel?

    Cheers,
    Michel




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      In one side it provide M54*0.75 thread and in the other side it is fixed by screws.




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  19. Avatar

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    Is there a way to attach the ASI1600mm with its m 42 threads to this wheel with the provided adapters and maintain backfocus? I see there are m42 female adapters




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      Sorry no.
      ASI1600 does not need 2″ filters.




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  20. Avatar

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    Hello,
    I understand that at one end of the filter wheel we have M54 male and at the other end M54 female.
    Am I correct?

    Pierre




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      One side is M54*0.75 female and the other side is fixed with screws.




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