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iOptron Electronic Automatic Focuser - iEAF
iOptron Electronic Automatic Focuser - iEAF
 
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Price: $238.00
Promotion Price $199.00
Savings: $39.00


Availability: Back Order
Product Code: 8453
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Description Technical Specs Support Documents
 
This iOptron Electronic Automatic Focuser (iEAF) is designed for both Crayford and Rack-and-Pinion focusers. It is powered by a 5V USB port. The focuser is ASCOM compatible and will work with most planetarium and imaging software. It also can be adjusted manually by pressing a button on the focuser.
Features
  • Built-in temperature sensor
  • Whisper quiet operation
  • Powerful stepper motor
  • Zero backlash
  • USB connection to a computer
  • ASCOM compatible
  • Manual adjustment
  • Position memorizing during power off
  • Compatible to most focuser with proper mounting bracket/adapter
Average Rating: Average Rating: 4.5 of 5 4.5 of 5 Total Reviews: 3 Write a review »


  0 of 0 people found the following review helpful:
 
3 of 5 Nice focuser, but the drivers and FW have issues April 9, 2025
Reviewer: Alec from Dublin, Dublin Republic of Ireland  
The thing itself is nicely built, I like it. Screws, bracket, shaft adapters, cable - everything you need is in.

However the driver and the FW have issues which I think must be fixed - if updated I'll give all 5 stars without any hesitation.
Both the native app and the buttons allow the focuser to move beyond the limits - greater than max or to the negative values. This is not good and not safe - the telescope focuser  or the iEAF can be easily damaged.
Probably the iEAF has the stall condition detection, but there is a dilemma - it either limits the max useful load or don't prevent damage.
The software like N.I.N.A. doesn't allow to overcome the limits, but if limits are already passed - even N.I.N.A. tries to go further, during autofocus for example.

Please, fix this!

Additionally if both buttons are pressed simultaneously by mistake, instead of stopping and doing nothing the iEAF slows down and produces a kind of buzzing sound, doesn't seem harmful however. Maybe ok.

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  1 of 1 people found the following review helpful:
 
5 of 5 Excellent Focuser October 11, 2023
Reviewer: JimT from NC United States  
I love this Auto Focuser. Has a smooth operation and works great. It is so very solid and the craftsmanship shows on it. The kit it comes with to mount it is very well thought out and makes it simpler to install. iOptron did their home work on this one and the performance is there. I have one of the other makers( Red one ) focusers and while it is OK it is not in the same class as this focuser. The iOptron install kit is better , with solid parts to work with and its motor operation is smoother. I also very much like the in out control buttons on the back and much prefer them over the cheap plastic hand controller you have to plug in each time for the competitors red focuser. Over all iOptron gives us a second but better option with auto focusers now. I'll be buying another soon.

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  2 of 2 people found the following review helpful:
 
5 of 5 Cost Effective Autofocussing July 26, 2023
Reviewer: Ian Thompson from Leeds, West Yorkshire United Kingdom  
I had some issues with this at first, The unit wasn't reporting position or temperature and therefore wouldn't work with N.I.N.A or Sharpcap for autofocus, etc.
Here's where iOptron's customer service stepped up to the plate. They reached out to me with a firmware update that fixed all of the issues I encountered.
Now this electronic focusser works fantastically well. It's quick, repeatedly accurate and works perfectly with N.I.N.A's automated focussing. I no longer have to freeze outside while trying to get my focus dialled in. No more discovering half of my data is useless because of focus drift either!
The unit is beautifully minimalist, with just a USB port and two small buttons for manual control. Build quality is excellent and everything you need is in the box- even hex keys.
A great little autofocusser at an excellent price.

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