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Electronic Inline Automatic Focuser
TM
With iLock
Technology
Instruction Manual
Feb 2025, Version 1.0
iOptron reserves the rights to revise this instruction without notice. Actual color/contents/design may differ from those described in
this instruction.
iOptron Corporation, Woburn, MA 01801
www.iOptron.com
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Summary of Contents for iOptron iAFS2
- Page 1 Electronic Inline Automatic Focuser With iLock Technology Instruction Manual Feb 2025, Version 1.0 iOptron reserves the rights to revise this instruction without notice. Actual color/contents/design may differ from those described in this instruction. iOptron Corporation, Woburn, MA 01801 www.iOptron.com...
- Page 2 0.6 micron resolution, and position limiters to prevent over runs. It comes standard with a 2 inch visual back, and optional telescope adapters to fit various OTAs are available. The iAFS focusers will be available as the iAFS2 two inch model and the iAFS3 three inch version.
- Page 3 iAFS Parts Motor focusing Manual focusing buttons USB-C knob Position screw Visual Back OTA adapter (Optional) Locking screw Drawtube M4 screw Attach Focuser to Scope 1. Select a proper telescope adapter, such as FA20-M0900 for RC6 telescope. 2. Install telescope adapter. First, back out three (3X) Position Screws and the Locking Screw on the iAFS body.
- Page 4 Next, insert OTA Adapter (FA20-M0900 shown) into the focuser body. Thirdly, thread 3 Position Screws all the way in, then back out a quarter turn or so. The OTA adapter can be rotated freely but can not be pulled out from the focuser body. 3.
- Page 5 4. Tighten the Locking Screw to lock the focuser. Release the Locking Screw to adjust the focuser angle. Finally tighten three Position Screws after angle adjustment. Attach Camera Adapter 1. If a visual back is used, thread it onto the focuser camera end. 2.
- Page 6 3. Connect any one of the focuser USB2.0 port to a PC USB port using included USB-C cable. The focuser will get the power from the USB port. 4. Click iOptron Standalone Focuser icon located on your computer desktop to launch the focuser.
- Page 7 You also can set up the Maximum Steps by click on Change button. The other functions are self-explained. 7. When using an imaging software, choose “iOptron Standalone Focuser” from Image Software ASCOM Focuser setup menu to connect the iAFS to the Imaging Software.
- Page 9 Specification: Part Number FA20 FA30 Product Name iAFS2 iAFS3 Focuser Size 2” 3” Dimensions 90.5X106X82mm 94X133X108mm Weight 783g 1062g Clear Aperture 51mm 68mm Maximum Payload Drawtube Travel Distance 30mm Focusing Resolution 0.6um Power/Communication Port Type-C USB2.0 port X2 Drive Train...
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