Zwo oag backfocus. 66mm, and it is only the 55mm value for 1000mm focal length.

Zwo oag backfocus. HEQ5 Mount Celestron 6se OTA with 0. Jun 12, 2024 · The ZWO OAG L that OP has is only 17,5mm. I decided on the following major components in the optical chain: Celestron C8 SCT (which I inherited from a previous user) SCT f/6. 1. Camera sensors do not care. If the OAG-L is used without a filter wheel, the ZWO D70-M54F adapter must be used to connect the off-axis guider to the camera and achieve a 55mm backfocus. Both are directly connected (threaded via the M42 May 28, 2025 · With the ZWO CAA, a Pro ZWO camera, the ZWO OAG, and a filter wheel/ drawer, you would need a telescope or corrective element that can focus with about 87. That's 7mm or so thicker than the Orion one (if I'm thinking of the right one). Dec 7, 2023 · Back focus with OAG - posted in Beginning Deep Sky Imaging: Hey folks! So, I am having trouble obtaining focus in both my imaging camera and guide camera with the ZWO OAG. That way, you also don't have to spend an entire night again to retune the precise backfocus. However, Id like to be Jun 2, 2020 · Apologies in advance as I know a lot has been written on this subject. For the C8 the light path for Oct 30, 2022 · Your ultimate telescope guide on how to set the back focus is here! Learn why back focus spacing is so important to get right, and more! Apr 7, 2025 · Please note: For guiding, the OAG-L can only be used with ASI Mini cameras such as the ASI174MM Mini, the ASI290MM Mini and the ASI120MM Mini. I have an ZWO ASI533 MC as main camera (17. Jul 14, 2019 · Need help with Edge HD 8" oag and camera setup (backfocus) - posted in Beginning Deep Sky Imaging: Hello CN, this is my first post - hopefully this is the right place for my questions. 66mm for focal length of 1200mm). For focal lengths that are longer than 1000mm, you again need a backfocus of less than 55mm (54. 5 mm back-focus) and a ASI 290 MC (12,5 mm back-focus) as guide camera. Feb 15, 2025 · Which OAG? ZWO-L vs Askar vs Player One Max? - posted in Beginning Deep Sky Imaging: Currently doing hours of research on components for my 3rd rig which will be a portable system. 3 reducer / corrector ZWO M68 OAG-L, to support using an off The OAG-L is not necessary for 4/3" or smaller sensor cameras and the standard ZWO Off-Axis Guider with 1. What ZWO is suggesting you Sep 26, 2024 · How to connect ASI6200MM Pro to 2″ EFW/M54 filter drawer and OAG-L? How many solutions are there for ASI6200MM Pro to get 55mm back focus length? If you are still… Sep 26, 2024 · How to connect ASI6200MM Pro to 2″ EFW/M54 filter drawer and OAG-L? How many solutions are there for ASI6200MM Pro to get 55mm back focus length? If you are still… Aug 2019 All materials related to this publication are subject to change without notice and its copyright totally belongs to Suzhou ZWO CO. I recently acquired a Celestron Edge HD 8 with AVX mount from a very nice and knowledgeable CN member. 5 mm of back spacing. It arrived promptly from FLO in their usual high standard of packaging. This variant requires you to remove the tilt plate on the camera side to compensate for that extra 5 mm. This would not work for you as there wouldn't be any threads left on the camera side to screw the filter drawer onto. Please vist ZWO's webpage Best Solutions for 55mm Back Focus for examples of various imaging train setups using ZWO gear. Instead of using the 20mm ZWO EFW, you can directly connect the adapter to OAG-L with the addition of 5mm sensor tilt adapter to reach 55mm back focus. - posted in Experienced Deep Sky Imaging: I’m about to buy the ASI294MC cooled for my C8 SCT OTA. Ill post my full specs below and what I have tried. It has a thickness of 15mm. You can use the guiding screw to adjust the guiding camera’s focus length. ZWO OAG distance to prism: 9. Sep 26, 2024 · The back focal length is advised by telescope manufacturers. Any idea why this is and how I can fix it? Mar 28, 2019 · Page 1 of 2 - ASI294MC Pro on C8 (how do I set up backfocus?) Help. Product Description The ZWO M54 adapter is an adapter designed specifically for ASI cooled cameras. Jan 2, 2024 · Help with backfocus on new SW200P/OAG? - posted in Beginning Deep Sky Imaging: I recently acquired a Skywatcher Quattro 200p and the ZWO OAG-L so I could meet the 55mm back focus needed. 3 mm closer than the focus for the guide cam, which is quite significant. 0 mm. So if I remove the barrel at the top of the OAG stalk, attach the helical focuser to that, then slide my ASI290MM all the way in, my back focus becomes: SkyWatcher FF Extension Tube: 6. I noticed that the focus position for the main camera is 1. 66mm, with 800mm focal length, the backfocus is 53. ZWO OAG distance to top of stalk: 30. Mar 2, 2022 · Tips on setting up an Off Axis Guider (OAG) [Deep Sky] Acquisition techniques · Rouz Astro · 3/2/2022 · 8 · 705 · 1 Register or login to create to post a reply. How do folks go about ensuring that’s the Jan 7, 2021 · Main camera: QHY268C Guide camera: ZWO ASI224mc paired with the ZWO OAG Problem is that cannot seem to get into focus on both camera and the guidecam at the same time no matter what (I tried adjusting the prism up and down with the small allen screws but stars were never clear points and had the classic elliptic moon shape )))) The Official User Forum for ZWO Productsyou first set you back focus between the back of the scope and the main camera sensor, ignore the OAG. OAG-L Mechanical Diagram OAG-L Connection Methods You may find the M54 and M68 sensor tilt plates on the ZWO website. Since most telescopes have a 55mm back focal length, we are here to provide detailed instructions for all ASI cooled cameras. 66mm, and it is only the 55mm value for 1000mm focal length. Please Note While adding OAG-L into your optical train, please make sure the prism won’t block the camera sensor. Last night was my first light with the telescope, and unfortunately Im really struggling to figure out focus in the new setup. There shouldn't be any issues getting the right backfocus with the ZWO OAG L - but it will be more fiddly than with the Celestron as you may have to source some adapters or make life easier and get some custom made ones. I believe the distance between the prism and my main camera’s sensor and the distance between the prism and my guide camera’s sensor must be identical in order to achieve proper back focus. It was easy to incorporate into my current set up, simply replacing the 16. I’ll of course be using a Celestron f/6. Backfocus to camera can vary I want to use the OAG with a Lodestar X2 camera (backfocus 12. 25" Holder and M48 / M42 Threads # OAG may be a better choice for you. . 63 focal reducer Celestron T Adapter SC ASI294MC Pro imaging camera ASI224MC as guide camera ZWO OAG Apr 4, 2022 · Here is a solution for achieving 105-mm back focus for a Celestron C8 SCT - posted in Beginning Deep Sky Imaging: Hello, all, Im still taking baby steps in the world of AP, currently assembling my kit. Im hoping to get it setup for DSO AP purposes using another newly acquired piece of gear - the ZWO ASI294mc Jun 12, 2024 · Celestron Edge HD 8" with OAG-L - any experiences? ZWO OAG-L · Christian Großmann · 6/12/2024 · 21 · 850 · 7 Register or login to create to post a reply. 0 mm As stated above backfocus is solely dependant on flattener or lens specified backfocus distance. Im pretty sure any of the OAG offerings from ZWO, Askar and Player one will work well. Using the ASIAIR as the computer. I am waiting for FLO to come up with a reducer but in the mean time I have the back focus set correctly The Official User Forum for ZWO ProductsI recommend not removing that filter completetly, but replace it with a parfocal IR-cut filter, since you need to perform some IR cut to get a good color balance (see the QE curve at the ZWO web site). 5 mm. The Basic Connection Solution: No filter wheel or filter drawer in this solution, only The Official User Forum for ZWO ProductsFigzphotoslooks like the OAG you're using is indeed the newer OAG-L with the plate on the telescope side. ZWO says the backfocal distance for the camera is supposed to be 55mm and has diagrams of the adapters (included) to create that focal distance. 5mm spacer between my Skywatcher ED80 telescope and filter wheel. tsai Jan 29, 2020 · The ZWO off-axis guider is a lightweight, well constructed instrument. 3 reducer. The guide cam is fully inserted into the OAG, no way to push it any further. Backfocus for OAG niccoc1603 Hi I have the following setup: ASI1600MM, ZWO EFW, ZWO OAG. I have just installed an OAG-L, ASI 174 and ASI 2600 on my telescope, using the recommended M54 adapter. 55mm was just a typical backfocus distance many flattener/reducer manufacturers try to standardize on… a lot still do use 55mm but many do not. Im considering scopes such as WO Redcat 71, Askar FRA 400 and (the most likely candidate) Askar SQA85. You can also insert an ZWO 2”filter into With a 600mm focal length, the backfocus is 51. The telescope or reducer documentation will state your specific distance. ,LTD. 5mm), what extensions do I need? Thanks katherine. Don’t mix or combine setting backfocus and focus. Please… Oct 19, 2021 · ASI174mm-mini — how to focus / back focus - posted in Beginning Deep Sky Imaging: I’m using the ASI174mm-mini for guiding along with the new ZWO OAG-L. Nov 26, 2019 · It appears that the focuser adds a minimum of 8mm to the back focus. Why do the two equipment manufacturers have different backfocus values and whom is right? Jun 3, 2020 · OAG and how to focus guide camera - posted in Beginning Deep Sky Imaging: Hi everyone I am new to the hobby and I know that its not recommended, but I started straight trying AP with Celestron EdgeHD 8 on AVX at F/10 though an OAG. Prompted by the views of Olly and other members of SGL I have been trying to get a ZWO OAG set up correctly on my Edge HD. However in use things proved more tricky. They are two very different Sep 26, 2024 · People are asking the connect methods of ASI2600MM Pro: How to use it with the new 36mm EFW? How to reach the 55mm back focus distance? What accessories I need and can I add the original OAG or OAG-L into my imaging train? To get all of the answers of these questions, you need to read this instruction. 55mm is the longest and only works at 1000mm focal length. Whereas my ZWO Miniscope picks up lots of stars and I get guiding Dec 11, 2021 · ZWO OAG-L help or experiences needed Generic equipment discussions · Christian Großmann · 12/11/2021 · 14 · 973 · 2 Register or login to create to post a reply. You need to achieve perfect main camera backfocus so you image is not abnormally shaped and then you need to achieve main camera focus via the telescopes focus mechanism. Oct 30, 2022 · I’ve got a Skywatcher Esprit 120 and the telescope manual states the backfocus from the flange of the field flattener to the camera sensor should be 75mm but ZWO (for example) states its ASI2600MM Pro camera (with an APS-C sensor) needs 55mm backfocus. wugend kvbcd wyevywky gsxf gpuvu mifu apiwo hcix cdoxm csyrhe