ZWO 1.25″ Helical Focuser

$59.00

SKU: ZWO HF1.25" Category:

Product Description

Makes a great fit together with ZWO OAG and ASI Mini Series Cameras. Can also be used for other purposes when an exact focus is required.

HF1.25

Note:focusing tolerance ±0.3mm

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.

Our website is continuously 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 have been installed before you start shooting:

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

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

  1. Avatar

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    Can I use the ZWO focuser for improving the sharpness at high magnification with my MAK105 telescope ? Of course, the eyepiece interface has M42X0.75 male thread…….




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      Hello! Is your issue resolved? If not, please email us at support@zwoptical.com with further details. If your issue has been resolved or if you have any other questions, feel free to contact us anytime. Thank you for your message and support!




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    Is the helical focuser suitable for a asi120mm-s with a ZWO OAG?




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      No, the HF is suitable for mini series cameras, not suitable for ASI120MM-S.




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    I’m trying to use this helical focuser with a zwo oag mounted on a SW Esprit 120ed and my zwo asi120mm mini. The ZWO 120mm mini will not sit low enough in the focuser to achieve focus. the lip on the camera prevents the sensor from getting close enough to achieve focus. It’s really not even close. Is this supposed to work with the mini cameras?




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      Could you please send a picture to support@zwoptical.com?
      It will be helpful to look into the problem; )




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    Hi, can I use it as a precision focuser for my DSLR? My telescope’s focuser is without dual speed (1:10) and new one with DS is just too expensive.
    Love your products! Cheers!




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      Sorry, it can not use with DSLR, it is for ASI cameras.




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    Hello,

    Recently, I purchased the ZWO 1.25″ Helical Focuser with the understanding that the stroke range was 0-6mm.
    However, the Focuser only goes up to 5.8mm and not 6mm as advertised. Is this how it’s suppose to be?

    I like the Focuser, but I wanted know and make sure that there is nothing actually wrong with it. Hope to hear back from you soon.

    Thank you!




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      The focusing tolerance is ±0.3mm.




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    Will this focuser work with Celestron OAG as well?




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      No. Please buy ZWO OAG.




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  7. Avatar

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    Having some difficulty with backfocus on an Edge HD8 with .7 reducer. When I install the helical focuser, do I take off the 5mm spacer? Also, do I need the 1.25 nosepiece on the 290mm mini?

    I’ve done the measurements and focused during the day, but nothing at night, even with bright stars in view.




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      could you get focused with eyepiece?




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    Good morning,
    is it possible to use this helical focuser with an asi224 and OAG?
    If possible, can I focus the guide camera independently of the main camera?
    Thanks so much,
    Giorgio




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      Hello
      please use the mini camera




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    Can I use this helical focuser with the ZWO 60280 Finder and Guide Scope? I bought this focuser with the intent of using it with this guide scope, but it does not seem to easily attach. Any suggestions? I am trying to avoid rotating the camera while focusing.




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      It is designed to fit with OAG. There is no need to add this focuser to guide scope.




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    Is this a non-rotating focusser?
    Also, can I put this between the ASI120MM-S and 30F4 mini scope? The focusser on the guide scope rotates the image when it is rotated which makes it tricky to get right.




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      This can only be used with our mini camera.




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    Would this helical focuser work with the 462MC fitted with the 1.25″ nose piece adaptor & OAG to provide easier focusing when using the OAG? Or will the focuser make the gap from the sensor to prisum too big to focus properly?




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      Sorry that the HF1.25 only can work with MIni cameras. If you have one ASI462MC camera, OAG can be worked with ASI462MC directly.




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    How much does this weigh? It is listed as 80-100gm. How can it weight two different weights? Is it 80gm or 100gm? Need this information to determine balance and mount loading. Thanks.




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      The weight of this Helical Focuser is about 100g.




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    Can it be used in the main focus for planetary photograph with asi120mc/asi290mc?
    Just use the main telescope (127mm MAK) to focus, and then then fine focussing with the helicoidal focuser?




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      The bottom female thread and top male thread are both M42*0.75. It requires your telescope has M42*0.75 male thread.




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    would it be possible to get the CAD file for this part? STEP file? greatly appreciated.




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      Sorry we do not provide this.




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    does this fit into an EFWmini?




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      It is designed to fit with OAG.




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    Can I use the ZWO Helical Focuser 1.25” with you ASI120MM-S?




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      It has M42*0.75 male thread on the top which can match up with the female one in ASI120MM-S, but you need to pay attention to the back focus.




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    I have an ASI174-mini. Should i be using the m28.5-CS adapter and/or the 1.25″ extender when using OAG, EFW 36mm filter wheel, and the 1600mm-pro camera?




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      Normally I do not use the 1.25″ entender,but it is depend on whether it will get focus. If it is short then you can add this adapter.




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  18. Avatar

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    I can use the ZWO 1.25″ Helical Focuser with mini zwo scope ?




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      Yes you can but I think there is no need to add this focuser to mini guide scope.




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    Does this work with regular non-cooled ASI cameras?




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      Yes,you can think of it that way.
      Because the Helocal Focuser works with OAG, which the one connect to guide camera. In general the guide camera is non-cooled camera.




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