Product Description
ZWO Off-Axis Guider for Astrophotography
1.Lightweight, 16.5mm thickness
2.Large prism: 8*8mm
3.Connect the main imaging camera and the guide camera. No guide scope required!
4.Flexible adaption to your camera and telescope, such as M42 and M48.
5.Fully compatible with all ZWO ASI cameras
6.Good stability and rigid connection to the telescope to minimize flexing of the imaging train
ZWO OAG comes with all adapters you will need for imaging and guiding.
Package includes:
1. OAG body(with 1.25″ holder and 5mm extender and M42 adapter)
2. M48 adapter for main imaging camera(in the box)
3. M48-M42 adapter for telescope and flat lens(in the box)
4. Hexagon wrench and Spacer(in the box)
Mechanical Diagram
Connecting Diagram:
Usage Guider:
1. please caculate the correct required distance for your imaging train at first
for example: you need to attach 21mm extender to ASI071 to reach 55mm back focus distance:17.5mm+21mm+16.5mm=55mm
2. Take off the guider prism part and attach OAG body to the telescope
3. Insert the prism part into the OAG body
4. Mount the guide camera
5. Screw the T2 or M48 adaper on the imaging camera according to your mount type.
6. Mount the camera on the OAG in correct position and lock the 3 screws in place.
7. The final setup
Note: please make sure the prism won’t block the imaging area
Use the guiding screw to adjust the guiding camera’s focus.
You’d better do it at day time to make sure imaging camera and guiding camera can reach focus at the same position.
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.
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
- 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
- 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 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.
sagarinku – :
Hi – Am trying to use standard OAG with Meade 8′ ACF with ASI290mc guide camera and 294mc image camera – am not able to focus – i tried all ways high gain with and without reducer – please assist.
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chole le – :
Hello! We apologize for this inconvenience. Please contact our support(support@zwoptical.com). They have the expertise and resources to assist you effectively.
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rodrick1 – :
Hi, Sam,
I’m sure this has been asked before but I can’t find the answer. With this OAG on a C9.25, focal length 2350, which camera is better: the ASI290 mini or the ASI174mini? I have the 290 but am concerned about finding guide stars when imaging galaxies up north, for example. I just got it, but on my first attempt there weren’t many.
Thanks,
Frank
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chole le – :
Hello! We recommend ASI290 mini.
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Frank Eeckman – :
I am a total beginner so sorry if this is a stupid question. But can I use this with an Explore Scientific ED80 and a Canon full frame mirrorless camera? Will it block the sensor? Thanks,
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chole le – :
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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Sean – :
Hi there,
How much does this OAG weigh with the helical focuser? thanks!
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Memory Ji – :
It’s around 80-100g.
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Thibaut – :
Hello,
Can you tell me what tool is used to unscrew the small grub screw that holds the prism?
I need to put the prism back on, because due to a clumsy mistake the OAG fell off, and the prism came apart. It has a small chip, but I hope it can still work properly.
Thank you very much for your help.
PS: if necessary, do you sell in spare part just the prism or just the metal part holding the prism?
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sara.liu – :
The hexagon wrench which is in the OAG box can be used to unscrew screw.
We sell the prism and the metal part together.
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Bernd – :
I am interested to use a ZWO Off Axis Guider for the following system configurations:
– ZWO ASI294 -> OAG -> Celestron Adapter T2/M48 -> Celestron SC 150/1500, as well as.
– ZWO ASI294 -> OAG -> Newton Corrector -> Newton 200/1000 (e.g. Skywatcher Telescope N 200/1000 PDS
However, ZWO offers two different OAGs, each with different prism size and price level
– ZWOOAG – 8×8 mm prism and
– OAG-L – 12×12 mm prism
Two questions arise for me here:
– My understanding is that the angle of view of the guider cam must be matched to the
prism size.
So, how do I come to a conclusion here which Guider Cam I can use with
which prism size?
– Would the ASI 120 mono be a suitable guider cam?
Thx
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sara.liu – :
The OAG-L has a bigger prism than the OAG, both of them are suitable for the ASI294.
But the OAG-L must work with mini camera as the guiding camera.
If you would like to use 120 momo as the guiging camera, you must choose OAG.
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Bryan Phillips – :
I have an LX90 8 inch SCT. I would like to get into night sky photography. I like the idea of the Asiair Pro and OAG. What configuration would you suggest if I want to use my Camon 6D as the imaging camera?
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Support@ZWO – :
OAG can only work with ASI cameras.
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Marc – :
Hello, Is the ZWO OAG compatible with the Celestron 9.25 in. Schmidt Cassegrain telescope? Is a special adapter required to fit the OAG to the scope? Do you sell this adapter? My local dealer could not find a way to fit the OAG on one of his Celestron scopes. Thank you.
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Support@ZWO – :
We only have M48-M42 adapter.
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Chris – :
What size is the hexagon wrench? I lost mine and need to buy a new one.
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Support@ZWO – :
M2
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C T – :
Hi
Would the OAG work for guiding via a ZWO ASI Air Pro with a Celestron Edge HD8, ZWO 120 Mini? Or will the FOV via the OAG be below the 0.2degrees for plate solving?
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ZWO.Moson – :
Yes, the OAG can work with ZWO 120 Mini. And the OAG can attach to the thread which size is M48 or M42.
It cannot be plate solving when the FOV is below the 0.2 degrees.
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Anding – :
What size of sensor (mm) in the guide camera can be illuminated by the OAG? even the 11.3 x 7.1 mm of the ASI174?
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ZWO.Moson – :
The sensor of the guide camera has a 6*6mm area that will be illuminated by the OAG.
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John Schnupp – :
How much does the OAG weigh? I looked in the description, specification and the Q&A and could not find this information. Trying to calculate the weight of my imaging equipment v. my visual equipment for balance and mount loading concerns. Thanks.
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ZWO.Moson – :
The weight of this OAG is 0.3kg.
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Heskyyyyy – :
Hi. I plan to use this with a skywatcher esprit 100 with the flattner. Would this work with the filter drawer and the zwo 294 mc pro? And is there enough thread that goes into the oag to support the whole thing?
Thanks
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ZWO.Moson – :
There is the link for your reference: https://astronomy-imaging-camera.com/tutorials/best-back-focus-length-solutions-55mm.html
Yes, it has enough thread.
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Franz Gerstheimer – :
I am happy to use a ASI1600GT with my refractor scope. Now I would like to replace my guiding scope with an OAG. Could I just position this OAG in front of the 1600GT camera/EAF system and get my ASI120MM guiding cam in focus, possibly with the pelican focuser?
Regards
Franz
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ZWO.Moson – :
Yes, you could refer to the title “The best solutions for a required 55mm back focus” on the following website:https://astronomy-imaging-camera.com/product/asi-gt-camera
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Ali – :
Hello,
Can i use LACERTA M-GEN II autoguider camera with this ZWO OAG ? or i need special camera ?
Thanks
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ZWO.Moson – :
Yes, you can use this LACERTA M-GEN II autoguider camera with ZWO OAG. Also we have our own guider camera for your reference.(https://astronomy-imaging-camera.com/product-category/guiding-cameras)
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Steven – :
Is this compatible with an SBIG STF-8300 and SBIG FW-8300 as my main imaging setup? I will be using an ASI290 as my guider. I’ve heard that it might be, but it’s possible I will need an adapter.
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Katherine Tsai – :
We are not sure but you can pay attention to the thread that OAG provides to see if they can be connected.
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Wolfgang Franke – :
How long is the M48 thread on the telescope side of the OAG?
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Katherine Tsai – :
5mm
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Michel – :
Will it fit on the ZWO 2” filter wheel (5 filters)?
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Katherine Tsai – :
No.
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Ronaldo SanAgustin – :
I’m about to order your ASI120MM-S (mono) and OAG with focuser for use with Meade LX200EMC classic SCT as soon as you answer my questions. No diagonal prism will be used. From visual back to Focal Reducer to this OAG to Filter wheel to 1600 MM Pro Mono The 120MM-S will sit on the OAG. do I need a focuser for this setup? Your refractor setup example picture does not use a focuser nor a 1.25″ nose piece. Will my LX200SCT be set up different? Will both the imaging camera ASI1600MMPro and guide camera ASI120MM-S be focused together since the LX200 has its own focus knob? Is this a good set up in combination with my LX200? I’ll eagerly await your response so I can order right away. Thank you.
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Katherine Tsai – :
What is the balc focus of your telescope?
Main camera and the guide camera share the same optical train and get focus at the same distance.
You can calculate the back focus of main camera to calculate whether the guide camera will get focus at this situation.
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Dawn M Lowry – :
Is this the version 1 or the versin two with the longer screws. I am concerned about the connections like others hanging $3000Off the small screws. ANY chance of a SCREW connection? PErmanent?
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Katherine Tsai – :
Sorry it does not support screw connection and now we sell the latest version.
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