Calculate and Adjust Backlash on a ZWO EAF with the ASIAir

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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)

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Опубликовано:

5 май 2024

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Комментарии : 55

@BlueTurtleStudios 16 дней назад

That was great Glenn. So well explained I could follow easily. Good Job!

@GlennMartinPhotography 16 дней назад

Glad you enjoyed it!

@whatmattersmost6725 25 дней назад

Great video and the best way of setting backlash I have seen! It's VERY important when using Nina or AsiAir Auto Focus!

@GlennMartinPhotography 25 дней назад

I really appreciate you taking the time to give feedback, thank you :)

@thatastrochap 24 дня назад

Very nice explanation and demo. Definitely going to check my backlash setting and update it. Thank you!

@GlennMartinPhotography 24 дня назад

Thanks, Chap, glad you found it useful :)

@MartinLeeney 21 день назад

Great concise video. Thanks for taking the time to explain it so well.

@GlennMartinPhotography 21 день назад

Thanks for the feedback (Martins represent!)

@TheRhike 26 дней назад

Incredible useful and concise video, many thanks!!

@GlennMartinPhotography 26 дней назад

You're welcome, I'm glad it's useful :)

@user-lt9py2pu6u 26 дней назад

Excellent tutorial, very useful.

@GlennMartinPhotography 26 дней назад

I appreciate the feedback ☺️

@raymahl 23 дня назад

Thank you so much for this explanation!

@GlennMartinPhotography 23 дня назад

Glad you liked it :)

@PeterRattfeldt 25 дней назад

Thank´s for keeping it short. Great video :)

@GlennMartinPhotography 25 дней назад

No worries, Peter. I really focused on trying to keep it to the essentails and not go down my typical rabbit hole :D

@stlwoodworking 27 дней назад

Well put together video sir.

@GlennMartinPhotography 27 дней назад

Thank you kindly 😊

@88cford 15 дней назад

This was an awesome and very easy video to understand. Now I'm gonna go calibrate both my scopes EAF.

@GlennMartinPhotography 15 дней назад

Great to hear, thanks so much!

@coolabahwoodworking 27 дней назад

Great video man. That is really interesting. I didn’t know that happens at all 😮

@GlennMartinPhotography 27 дней назад

Thanks, Mate 😊

@Zealor365 26 дней назад

Wow, so easy and accurate too!

@GlennMartinPhotography 26 дней назад

So glad you found it useful!

@esenb 22 дня назад

That's a great tip. Thanks.

@GlennMartinPhotography 22 дня назад

No worries 🙂

@vikasch1000 25 дней назад

nailed it - well done!!

@GlennMartinPhotography 25 дней назад

Thanks, Vikas 😊

@darkrangersinc 27 дней назад

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

@GlennMartinPhotography 27 дней назад

Great advice, Ryan!

@mikerogers2319 25 дней назад

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 !

@GlennMartinPhotography 25 дней назад

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.

@iandobbin8068 9 дней назад

Not particularly expensive is relative; to the whole rig, yes, but on a struggling budget, no. Great video and thanks.

@AntonioPena1 25 дней назад

Very simple and effective presented, many others tried to explained, but you nailed perfectly in few minutes, thanks for sharing your method.

@GlennMartinPhotography 25 дней назад

Glad it was helpful! Thanks so much for the feedback 😊

@marcovfonseca 26 дней назад

Clever. Tx for sharing!

@GlennMartinPhotography 26 дней назад

Thanks for watching, Marco 😊

@gregmac8268 25 дней назад

Perfect! Excellent tutorial and simply explained with a clear presentation... Bravo!

@GlennMartinPhotography 25 дней назад

Glad you liked it thanks, Greg :)

@AZ4Runner 26 дней назад

great video!

@GlennMartinPhotography 26 дней назад

Thank you 😊

@stevenmartell9652 27 дней назад

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.

@GlennMartinPhotography 27 дней назад

Thanks for the feedback, really glad it’s helped.

@mikelockwood2104 27 дней назад

excellent video - it's the simple things that make a huge difference

@GlennMartinPhotography 27 дней назад

Thanks, Mike, glad you liked it 😊

@ShayneMostyn 27 дней назад

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

@GlennMartinPhotography 27 дней назад

🤣 thanks so much, mate I really appreciate that!

@mikehardy8247 23 дня назад

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

@GlennMartinPhotography 23 дня назад

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 )

@mikehardy8247 23 дня назад

I never throw anything out

@GlennMartinPhotography 23 дня назад

@@mikehardy8247 like a true astrophotographer!

@TheTabugman 21 день назад

Thanks for the video! Another RU-vid channel (can't remember which one) said that the Asiair calculated the EAF backlash automatically...? 🤔

@GlennMartinPhotography 21 день назад

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 😜)

@TheTabugman 21 день назад

@@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. 👍