OAG-L

$199.00

 

 

Available on backorder

SKU: ZWO OAG-L Categories: ,

Product Description

OAG-L has a large prism size of 12*12mm, far bigger than M68 OAG. The bigger clear aperture brings wider field of view in guiding. It is easy to use, and suitable for users who are interested in long focal length photography.

To take the most advantage of it, we recommend you to match it with large format guiding cameras.

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Features:

  1. Lightweight and exquisite, 17.5mm thickness.
  2. Prism size: 12*12mm.
  3. The effective light-passing aperture is 11.7mm*8.3mm.
  4. Can be used to connect the main camera and guide camera simultaneously. No guide telescope required.
  5. Packaged with an M48 sensor tilt plate (5mm).

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Operating Guide:

  1. For guiding, OAG-L can only work with ASI Mini cameras like ASI174MM Mini, ASI290MM Mini and ASI120MM Mini.04
  2. Considering the large prism size, we don’t recommend you use OAG-L with telescopes whose clear aperture is smaller than M48.
  3. Yet it is recommended to use with 2” EFW or 7x36mm EFW, and with APS-C cameras (ASI2600) or full-frame cameras (ASI6200/2400). The large clear aperture supports full-frame cameras without vignetting.
  4. The major differences between OAG-L and M68 OAG are about the prism size and the threads. OAG-L removed the inner threads so you can directly use the screws to connect it to other equipment.
  5. If the thread of your telescope side is M48, then you don’t need to remove the M48 sensor tilt plate coming with OAG-L. On the contrary, you need to remove it and use some other sensor tilt plate at the corresponding thread of your telescope.

The pictures below show how to remove the sensor tilt plate:

OAG-L拆解_01(1)

OAG-L拆解_03(1)

 

Mechanical Diagram:

结构尺寸图

Connection Guide:

全画幅冷冻相机加OAGL连接方案-英文(1)(2)

APS-C冷冻相机加OAGL连接方案-英文

You may find the M54 and M68 sensor tilt plates on the ZWO website.

 

Please Note:

While adding OAG-L into your optical train, please make sure the prism won’t block the camera sensor.

You can use the guiding screw to adjust the guiding camera’s focus length. Please make sure the distance from the prism to the main camera and to the guide camera are the same. To ensure the result, it is better to do this at daytime for the adjustment will be very difficult at night.

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

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    Dear ZWO Team, please advise me how to fit this OAG to a Celestron C5 SCT scope which reportedly has 2″ thread. Thank you.




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      Sorry, we only provide the telescope side adapterS for M48,M54,M68.




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    Hello, will this OAG work with Celestron C5 scope and ASI 294MC Pro camera? Or should I go for an “old” OAG instead?

    Thank you.




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      The OAG-L is not compatible with ASI294MC Pro.




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    I have a skywatcher 150/1800 and an asi183mc pro camera, it would work with the ZWO OAG-L.




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      We recommend you use the OAG-L with APS-C cameras (ASI2600) or full-frame cameras (ASI6200/2400).




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    Hello. Please advice if this OAG works with Canon EOS as the main camera. Thank you.




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      No, the OAG-L can not work with Canon EOS.




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    Hello,

    How could I adapt this item to 2 inches T2 adaptor ?

    Best regards.




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      It is not compatible with 2 inches T2 adapter.




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    Correction to my original question:-

    Hi there. Could you confirm if the OAG will work with the following setup in the image train as I want to use the full sensor on the 174 to capture stars for guiding. My present oag is the standard zwo oag with 6mm diam hole which will only allow part of the sensor to be used:-

    ZWO ASI 294 MM-PRO
    ZWO ASI 174 MM guide camera
    ZWO EFW 8-position Filter Wheel / 31mm Unmounted Filters
    Celestron Edge 8″ HD scope

    Thankyou

    Paul




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      The EFW 8-position is not compatible with OAG-L.




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    Hello dear ZWO Team,

    I own a 6200 MC and the “old” OAG 68mm and the filter drawer. I understand that the new OAG L is not compatible with the filter drawer. Are you considering making a OAG L for 6200 Color users like me?
    Would be so nix if i can attach that new OAG L to my full frame color camera.

    Best Regards




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      Received your request, we will consider it; )




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    Is this OAG ok for a 7×36 Filterwheel then a ASI1600 imaging camera ?




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      Due to the backfocus, I think it is not ok.




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    Sorry I grossly estimated, and was wrong, how much the tube protrudes beyond red plate by placing at extreme position.
    I have 3D printed myself a threaded M48 plate with sensor cutoff, in order to place it more accurately.

    It turns out it protrudes ~2mm rather than 10mm. Prism is placed at position for the sensor to be clear but not more (closest to sensor possible without casting a shadow).

    Oh also, the prism being 12mm but optical conduit ~8x12mm I believe that using it with an image circle of 44mm and full frame sensor is possible without casting a shadow on imaging sensor or guiding camera (up to 8x12mm sensor size obviously)




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    Thank for forwarding the feedback to your devs. However I already asked one year ago, so I don’t have much hope to see something happening in the near future.

    I don’t understand, what do you mean by target spacing ?
    With a “non-mini” ASI174, the goal is precisely to remove the space taken by the focuser so I can reach backfocus, I don’t care if I loose the helical focuser functionality.
    I’ll calculate required distance for backfocus and add spacers if necessary.

    Could you please kindly confirm the focuser can be removed and what thread is it attached to ?

    Also what is the total length of the tube holding the prism ?

    Last, with prism at extreme “inside” position (meaning only the prism is visible in the imaging circle) does the end of it go beyond the red plate ? If so by how much mm?




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      The focuser can be removed by lossing the four screws, the screw thread is M2.
      No prism beyond the red plate.




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    As an alternative, would it be possible for me to machine an adapter replacing the focuser to accept a non mini camera ?

    If so, could you please kindly provide connection thread, is it M34, M36, .. ?




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      There will be a problem with the target spacing.
      We do not recommend.




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    It is a shame you redesigned it without considering non-mini cameras.

    This OAG is much better than mine but I will never change my ASI17MM for it.




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      Received your request, we will convey it to our devs.




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    Two questions:
    1. Can the prism be moved left/right to search for guide stars?
    2. I have the helical focuser for the original OAG. Can the helical focused be used with the OAG-L?




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      Re 1: The prism can only be moved up or down.
      Re 2: The OAG-L’s body already has the HF.




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  14. Avatar

    (verified owner):

    How do we adjust the location of the prism? I will have a 6200mm and will probably need to pull the prism back a little so that it doesn’t block the sensor on the 6200mm…




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      You can use the guiding screw to adjust the guiding camera’s focus length.To ensure the result, it is better to do this at daytime for the adjustment will be very difficult at night.




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    I purchased the L OAG for use with a 6200MM, EFW 7 X 2 inch, and a 290MM Mini guide camera. I have had trouble getting the guide scope focused. The instructions say that the distance between the prism and the guide scope lense should be the same distance as the prism and the lense of the 6200 MM. Even with the EFW between the camera and the prism the maximum distance I can achieve is about 1 mm shorter than the distance of the middle of the prism to the lens of the 290 MM mini. Is there an extra spacer or camera rotator that can be connected between the EFW and the imaging camera?




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      You can use the guiding screw to adjust the guiding camera’s focus length.To ensure the result, it is better to do this at daytime for the adjustment will be very difficult at night.




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    What is the weight or mass of this product? The features list only says it’s “lightweight” but I do not see the actual number listed.




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      The net weight is 267g.




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    Further to my previous question, I was looking fro a solution to attaching they ASI2600 to the OAG-L. After investigating the EFW, it seems that the solution is to connect the OAG-L to the 2″ EFW, then the EFW to the ASI2600/ASI6200, correct? I had to search the ZWO web site for a possible solution and found it on the EFW page but with reference to the ASI6200. I recommend linking that info to the OAG-L page (if I’m correct regarding the ASI2600).




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      Thanks for your suggestion, but there is the Connection Guide in the below of the OAG-L Product Description; )




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    Could you give the option of choosing the tilt plate bundled with the OAG? Personally an M48 plate is useless, I would need an M68 plate. Thanks !




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    The connection guide for the OAG-L is not clear to me. How would I add this to my imaging train if I use a ZWO filter drawer and an ASI2600?




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      The backfocus is 60mm, if use the OAG-L with the filter drawer.
      The OAG-L is not compatible with the filter drawer; )




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    I understand this is for the mini camera’s, but can the focuser be removed, or modified in some way to use it with your ASI290MM planetary camera? If not, do you plan to offer that solution?




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      It is impossible to connect the OAG-L with the 290MM, please use mini camera; )




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