Calculate and Adjust Backlash on a ZWO EAF with the ASIAir
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- čas přidán 5. 05. 2024
- If you have a ZWO EAF (Electronic Automatic Focuser) this video will show you to use the ASIAir App to calculate and calibrate for the backlash of your telescope.
Note only the ZWO EAF is compatible with the ZWO ASIAir ecosystem, but the same theory shown in this video can be applied to other brand focusers using other apps and software.
Non sponsored affiliate Links for stuff in this video - costs you no extra but supports this channel if you make a purchase. I appreciate you :)
Agena Astro
• ZWO EAF bit.ly/3UpkRPJ
• ZWO ASIAirPlus bit.ly/4d7oIYS
• William Optics Fluorostar 91 bit.ly/3xRD4fS
Highpoint Scientific
• ZWO EAF bit.ly/3ShwmGu
• ZWO ASIAirPlus bit.ly/3HAsjjI
• William Optics Fluorostar 91 bit.ly/3Pmhhn3
Footage of gears showing backlash from / @wisconline used under Creative Commons (CC) - Jak na to + styl
That was great Glenn. So well explained I could follow easily. Good Job!
Glad you enjoyed it!
Great video and the best way of setting backlash I have seen! It's VERY important when using Nina or AsiAir Auto Focus!
I really appreciate you taking the time to give feedback, thank you :)
Very nice explanation and demo. Definitely going to check my backlash setting and update it. Thank you!
Thanks, Chap, glad you found it useful :)
Great concise video. Thanks for taking the time to explain it so well.
Thanks for the feedback (Martins represent!)
Incredible useful and concise video, many thanks!!
You're welcome, I'm glad it's useful :)
Excellent tutorial, very useful.
I appreciate the feedback ☺️
Thank you so much for this explanation!
Glad you liked it :)
Thank´s for keeping it short. Great video :)
No worries, Peter. I really focused on trying to keep it to the essentails and not go down my typical rabbit hole :D
Well put together video sir.
Thank you kindly 😊
This was an awesome and very easy video to understand. Now I'm gonna go calibrate both my scopes EAF.
Great to hear, thanks so much!
Great video man. That is really interesting. I didn’t know that happens at all 😮
Thanks, Mate 😊
Wow, so easy and accurate too!
So glad you found it useful!
That's a great tip. Thanks.
No worries 🙂
nailed it - well done!!
Thanks, Vikas 😊
One option you may want to look at for the future for not much more is the Primaluce Sesto Senso it essentially eliminated the backlash in my autofocus routine. Obviously that’s only going to be usable for Nina but if you ever do go that route, I don’t have to do any backlash compensation and my focus curve looks really good and immediately starts changing from the very first step
Great advice, Ryan!
The backlash you are demonstrating there looks huge. I started experiencing some serious backlash on my ZWO EAF and i tracked it down to slop in the main gear/shaft inside the EAF. Taking it apart and re-assembling is easy ( voids any warranty of course, but this is not a particularly expensive part). I applied a tiny drop of CA glue on the shaft before reinstalling the main gear to get a tight fit. Backlash is almost zero !
Great bit of info, Mike! Won't be tearing mine apart any time soon, but certainly if it gets worse I'll be coming back to this comment.
Not particularly expensive is relative; to the whole rig, yes, but on a struggling budget, no.
Great video and thanks.
Very simple and effective presented, many others tried to explained, but you nailed perfectly in few minutes, thanks for sharing your method.
Glad it was helpful! Thanks so much for the feedback 😊
Clever. Tx for sharing!
Thanks for watching, Marco 😊
Perfect!
Excellent tutorial and simply explained with a clear presentation... Bravo!
Glad you liked it thanks, Greg :)
great video!
Thank you 😊
Thanks so much for this, Glenn. I was wondering how I was going to go about fixing the backlash issue, so thanks for making this video and having it just make sense.
Thanks for the feedback, really glad it’s helped.
excellent video - it's the simple things that make a huge difference
Thanks, Mike, glad you liked it 😊
I looked for this gearing on my phone and couldnt find it ;) Seriously though mate, I think this is one of your best put together videos, well done
🤣 thanks so much, mate I really appreciate that!
This has been explained by others. Your explanation is completely clear. I'll be doing this on all three of my EAF's soon. I like the ZWO ecosystem, but the lack of easy EAF interchangeability is not kool. I think replacing a split coupler might be possible?
THANKS
Really glad it helped :) I'd like to think ZWO or your local astro retailer would be able to replace a split coupler, but *maybe* in a pinch using the next size up could get you by in the interim (assuming you didn't throw out the box :-D )
I never throw anything out
@@mikehardy8247 like a true astrophotographer!
Thanks for the video! Another CZcams channel (can't remember which one) said that the Asiair calculated the EAF backlash automatically...? 🤔
That's likely referring to the auto focus routine in the ASIAir App, but before you run that it's handy to have a reasonable focus to start with so the auto focus doesn't go spearing off in the wrong direction and getting lost (don't ask me how I know 😜)
@@GlennMartinPhotography Thanks! I just googled it and found a ZWO tech guy saying the backlash was only used when focusing manually (and when switching directions) in the app. I'll use your instructions to get any backlash sorted regardless. Can't hurt. 👍