Q1: Which focusers are supported?
The current EAF bracket is compatible with
- SkyWatcher Astrograph reflectors,
- SkyWatcher Black Diamond,
- SkyWatcher Dobsonians,
- SkyWatcher Maksutov-Newtonians.
- SharpStar Telescopes
- SkyRover Telescopes
- TS Optics
- Astro Tech
- Feather Touch
- Some others such as Explore Scientific will fit with longer screws (not supplied)
- More focusers will be supported in the future as we develop more brackets
Q2: Does the EAF work with single-speed and/or dual-speed focusers?
If the EAF fits, it does not matter if it is on a single or dual-speed focus knob. We recommend attaching to the coarse focus knob, not the fine focus. There are 4 different sized adapters to attach the EAF to the focus shaft.
Q3: Is the EAF suitable for deep space and planetary imaging?
Yes, the EAF works for all types of astrophotography. With the ASCOM driver, you can use the EAF with any ASCOM compatible software or the ASIAIR.
Q4: Does the EAF make a difference?
Yes, the EAF can make very fine adjustments, meaning it is more accurate than manually adjusting focus. The EAF can also keep you in focus all night when using ASCOM drivers (coming soon to ASIAIR).
Q5: What power supply is required for the EAF?
The EAF requires 12V 0.5A. As long as the power supply is 12V and has 0.5A or more, it will power the EAF. The port is 5.5mm*2.1mm centre positive.
Q6: Can I manually adjust the focus from my Computer?
Yes, the ASCOM driver makes the EAF compatible with capture software that supports electronic focusers.
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Q7: Is the focus speed variable?
Yes, the EAF can focus at different speeds. On a computer, you can set the number of steps in a single rotation for precise control.
Q8: Do I need to install drivers to use the EAF
For use with the ASIAIR and ZWO’s computer capture software – ASICAP, no drivers are needed, simply plug and play! For use with other software, the ASCOM driver is required, found here: https://astronomy-imaging-camera.com/software-drivers
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Q9: Which capture software supports the EAF?
Sequence Generator Pro, Focus Max, The SkyX, Nebulosity, etc. If the software supports electronic autofocus via ASCOM then the EAF will work.
Q10: How does the EAF attach to a telescope?
First, you need to remove the focus knob from the focuser and check which of the 4 supplied adapters fits your focuser the best. Then attach it to the EAF and the focus shaft, then remove the necessary screws from the bottom of your focuser to then screw the bracket in place.
I’d like to get another bracket for a second scope — with the intention of moving the EAF easily from one scope to the other as needed. Can as second bracket be purchased separately?
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Yes, the bracket can be purchased separately. You can send an email to our info@zwoptical.com, and please send the photo of the item you need when you inquiry.
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Is there an adapter for the EAF for the Esprit 80?
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You do not need an adapter for Esprit 80. You can use our standard board to attach the Esprit 80 with EAF, but you need pay attention that you only need one screw to attach the board with Esprit 80.
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Hi – I have bought the EAF recently but cannot find a bracket to connect to Celestron Nexstar Evolution focus knob. Is there an existing bracket for this type or do I need to send it back? Thanks.
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Sorry the EAF currently do not support Celestron Nexstar Evolution focus knob. But it support Celestron Edge HD telescope and SCT/RASA telescope.
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What is the maximum voltage the focuser can withstand? can I operate it straight from a maximum 16.8V li-ion battery?
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The maximum voltage that EAF can withstand is 12V, we do not suggest you use this high voltage battery.
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Is this true that no more than 12V should be supplied? This would mean that we can not power the EAF from car batteries (13V) or lithium batteries (13-14V)? Also your cameras (e.g. ASI2600 can withstand 11V-15V as it says in the manual). Please confirm this once again, as I would like to use a lithium battery to power the EAF. Thanks.
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Yes, 11V-15V is ok for EAF 12v version.
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Can I use your EAF on a Takahashi NewQ focuser?
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Could you please send us the photo of the NewQ focuser via Dropbox or Google Driver?
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I have a Sky-Watcher 127mm Maksutov-Cassegrain Telescope, do you have a fitting for the EAF to this telescope?
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Sorry this type of telescope need an extra focuser and EAF.
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Hello. I have the skywatcher ED80 DS Pro refractor but with skywatchers own upgraded focuser as per the link below. I need to know if your eaf will fit before ordering please?
https://www.firstlightoptics.com/skywatcher-focusers/dual-speed-2-crayford-focuser-for-sky-watcher-refractors.html
Many thanks
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Yws,the EAF is supports to this focuser.
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I measured my eaf’s backlash. it was 210 steps.
but I think it is so huge value. I wonder is it normal value.
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Does the screw on the shaft being fixed and payload not over 5Kg?
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yes, the screw is fixed tighten, and payload not over 5kg.
I measured the backlash as no device equiped at telescope.
Do I need A/S?
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You can send email to support@zwoptical.com
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Hello,
I have just upgraded the firmware on my EAF. However the zero position is now with the focusser a third of the way out. Please can you explain how I can recalibrate and let the zero position be fully in. The eaf just beeps at me no matter what I try to do to get the focusser to go in.
Thanks,
Mike.
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Please reset the zero position, when the tube is fully in.
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Very inconvenient. I accidentally hit “set zero” and now I need to loosen the shaft, slide the focuser in manually, re-tighten the shaft… all during the night.
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we saw you have updated the feedback
and have no problem with the set zero
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Actually to my previous comment… Accidental hitting “set zero” in the night is not really a problem: I can reverse the focuser, navigate to the “old zero”, set zero there, turn reverse off and go back to my focus point.
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thanks for your feedback
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Is there a short instruction on how to mount the EAF on a Takahashi Epsilon. Sam mailed me once how to, but it seems I can not find it anymore. I know it was a combination of the Tak kit, and the original bracket, but not sure if I also need the bracket for Takahashi in the picture.
Tx
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You will need shaft that compatible with Takahashi, and the standard adapter can be fixed to the focuser, for more info you can email to support@zwoptical.com
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Would the ZWO EAF work with a Meade EXT90 Observer OTA?
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What does the focuser look like?
We have a SCT focuser adapter fot feather touch focuser.
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Can the ZWO EAF be powered by a leisure battery, i.e. 13.8v?
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Yes but I will recommend you 12V.
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The EAF (srtandard) doesn’t fit the SW Evostar 72ED, the existing focuser shaft is too long so the shaft from the EAF barely fits into the adapter. Also non of the screws fit into the focuser body (crayford 2″). Is there a solution?
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Can you remove the center screw on the focuser and fix with EAF adapter instead?
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What is the step resolution (in microns) for the EAF?
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It depends on your focuser,
Subdivision Steps for one circle: 5760 steps
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Can the EAF be installed on a William Optics Zenithstar 61 scope currently, or do I need to wait for a new bracket to be developed?
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Here is a link with the guiding of how to connect EAF adapter with WO71 that may help you.
https://digitalstars.wordpress.com/2019/11/08/how-to-install-a-zwo-eaf-on-the-william-optics-star71/
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https://digitalstars.wordpress.com/2019/11/08/how-to-install-a-zwo-eaf-on-the-william-optics-star71/
Here is a guide of how to connect EAF with WO71.
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ZWO EAF also compatible with skywatcher Evostar series Telescope ?
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Could you send us picture of the bottom part of the focuser so we can have a confirmation?
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here a photo of the bottom of the focuser – skywatcher Evostar 80ED Pro https://ibb.co/tJxn9dZ
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EAF can be attached to this focuser but need to remove the side screws.
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Will I be able to use the focus knob manually? Is there a way of manually decoupling it from the focuser?
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After you connect EAF to the focuser, it cannot be rotate manually, you need to control it via software or handcontroller.
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Will the bracket ever be available for the Esprit 80?
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Yes it will but it needs refit.
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I saw a YouTube video that uses feathertouch mount brackets, but can’t find the part number to order. How do we order those brackets?
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Send the link of YouTube what you see, and i will reply to you
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Hello
Does the EAF supports Moonlite CHL focusers ? If not, is it planned in a next future ?
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You could sent the Moonlite CHL picture to my support, I’ll check it and let you know.
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