iOptron iPolar User manual

iOptron®iPolarTM Electronic Polar Scope
Operation Manual
Product #3339
®
Ver. 2.50 2021.1
iOptron reserves the rights to revise this instruction without notice. Actual color/contents/design/function of a product may differ from
those described in this instruction manual.

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1. Connect iPolar to a PC
(1) Connect the iPolar Electronic Polar Scope (iPolar) to one of your computer USB port;
(2) The iPolar has embedded driver. It will install the driver automatically if it is connected to the
computer first time. It may take some time to install the firmware. An icon should be shown on
Windows right bottom corner while firmware is installed.
(3) Check the Windows Device Manager. There should be an iOptron iPolar under Cameras
2. Software Requirement and Installation
(1) This instruction is for iPolar 2.50 or later
(2) Goto www.ioptron.com to download iPolar software and save on your computer
(3) The iPolar software needs Windows 7, 8.1, 10 or later version, 32 bit or 64 bit operation system,
with .NET Framework 4.8 or later version.
3. iPolar Set Up
3.1. Adjust Equatorial Mount Pointing Direction
Set the counterweight shaft at the lowest point (Zero Position). Adjust the altitude to your latitude.
Roughly point the mount to the north (or south if located in southern hemisphere).
NOTE: The iPolar has a 13° field of view, FOV. Please make sure that the mount RA axis is pointing
to TURE north (TRUE south) within ±6°.
3.2. Connect iPolar in Software
(1) Run downloaded iOptron iPolar software (3339_iOptron_iPolar.exe) to bring up the polar
alignment main menu. Resize the window to fit your computer screen.
(2) Select display Language, either English or 中文(Chinese)
(3) Click on “Connect” button to connect the iPolar to the computer. The software will start initializing
the process if the camera is connected successfully.

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NOTE: If the software cannot connect to the camera, please check your computer camera settings.
Make sure to change "camera privacy" settings to allow apps to use the camera.
3.3. Initial Settings
Click on Settings to bring up Settings window.
3.4. Set Location and Atmospheric Parameters
Enter Manually
(1) Click on Change button
(2) Enter location info, i.e., latitude and longitude number (GPS coordinates). Northern
hemisphere is “+”, southern “-“ for latitude; eastern “+”, western “-“ for longitude.

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(3) Enter atmospheric parameters, i.e., temperature and barometric pressure. If the observation
site is near equators (lower latitude, N10° ~S10°), or is at high elevation (3000 meter or higher
above sea level), please enter the barometric pressure and temperature as precise as
possible.
Otherwise you may choose default atmospheric settings, just click on Default Atmospheric
Parameters. The default value is 10°C and 101325Pa.
(4) Click Confirm to complete the location setting.

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Read from an ASCOM Supported iOptron Mount for Location Info
NOTE: You’ll need latest firmware and iOptron Commander, as well as .NET 4.8 and beyond. Make
sure the mount is connected to the computer via ASCOM. Otherwise, this won’t work.
(1) Click on Settings
(2) Click on Read Location from Mounts
(3) An ASCOM Telescope Chooser window will occur, if the mount is ASCOM supported and
connected to the computer. Select correct mount ASCOM driver from the pull-down menu and
click OK.
(4) Click OK to complete the location setting.
3.5. Take Dark Frame
Take the dark frame image of the camera. This will mark the bad pixels of the camera, if there is any,
and camera dark current under different ambient temperature.
Click on Take Dark Frame. Follow the instruction on the screen to complete the process.

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You may check Auto-Load Last Dark Frame box to load the dark frame automatically. However, we
recommend to take the dark frame when performing polar align. If the software does not plate solve,
please retake the Dark Frame.
3.6. Set Camera Center
For most mounts, you DO NOT need to perform this step to set the Center of Camera. It is only
needed if an iPolar cannot be rotated with the mount RA axis, such as SkyTracker and SkyTracker
Pro.
Click on Input Center of Camera,
Enter 0480.0 in X and 0640.0 in Y, then click Confirm.

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4. Polar Alignment
4.1. Check Settings
Check the iPolar parameter settings, such as GPS location and Dark Frame. The following screen
indicates the Dark Frame is missing.
4.2. Check Image Display
When the mount RA axis is pointing to the pole region, the location parameters are set correctly, and
a dark frame is taken, stars should be seen on the screen when the lens cover is removed.
One can check the iPolar camera during day time by viewing the RAW image. By using a short
exposure, such as 1 ms and checking the RAW image, you should see a fuzzy reversed image when
you point the iPolar to an indoor object.
You may see stars when outside under good weather condition with a long exposure, such as 250 ms
or 500 ms.

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4.3. Plat Solving
After checking camera settings and status, uncheck the RAW image. The software will start to Plate
Solving the pole region. A real time image with white dots on black background will be displayed after
imaging processing.
Please check the real time instruction under the Connected box on top-left corner. If it displays “xx
stars detected. Plate solve succeed!” There is no need to adjust the exposure time. Otherwise,
increase the exposure time if it indicates too little stars, or decrease the exposure time when too
many stars displayed.

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NOTE: the field of view (FOV) of an iPolar is about ±6°. So it can only cover the area of about 6°
around the pole. If the mount RA axis is pointed far away from the pole, the plate solve may not be
successful, or the pole will be jumping around.
4.4. Determine Camera Center and Locate Virtual Pole
When the Plate Solve is successful, the software will start to determine the iPolar camera
center/mount RA axis and locate the virtual pole. As shown in aforementioned picture, if the Plate
Solve succeeds, click on “Confirm Position 1” button. A confirmation window will be popped up.
Click on OK to confirm. Do not adjust the tripod or mount ALT/AZI position after confirming position
one. Otherwise, the polar alignment will be failed.
If you are lucky enough that the RA axis is aligned to the Pole, you’ll see both the cross (camera
center) and the circle (virtual pole)! Otherwise, follow the on-screen instruction to use hand controller
or iOptron Commander to rotate the mount in RA. The software will confirm the position 2
automatically during rotation. The closer the RA axle is to the pole, the smaller the rotation angle is
needed. Click OK to close the position 2 confirmation window.

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The software will display the virtual pole with a maroon circle and camera center a red cross.
If the virtual pole is far away from the RA axis and can not be displayed inside the screen, an arrow
will show where it is located.

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4.5. Adjust Mount RA Axis
Adjust the mount using altitude/azimuth adjustment screws to move the virtual pole (maroon circle)
towards the center of camera (red cross). When they are close enough, the software will be in the
zoom mode for easy adjustment.
NOTE: It is suggested to set the mount to Zero Position so the virtual pole movement direction
corresponds to the alt/azi adjustment.

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4.6. Complete Polar Alignment
When the circle overlaps the cross, they will change to green and the polar alignment is completed.
5. Draw Mask
If there are some tree branches or part of the building get in front of the iPolar camera (click on
Settings=>RAW image to check), you may use the Draw Mask function to cover those part from
plate solving (uncheck RAW image before masking):
(1) Click on Draw Mask

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(2) Move the mouse cursor to the starting corner of the area that you want to ignore, click the
mouse button
(3) Move to ending corner and click the mouse. A green rectangular will show on the screen.
(4) Select another area as needed.
(5) Click on END Draw to confirm, or Clear Mask to clear all the masks.

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Specifications
Field of View (FOV)
~ 13 degree
Resolution
30 arcsec approx.
Alignment Precision (Max.)
30 arcsec
Chip
1/3” CMOS
Pixel Size
3.75µmX3.75µm
Pixel Number
1.2MP (1280X960)
Interface
Mini USB2.0
Software
iPolar Software
Operation System
Windows 7/8.1/10, 32bit or 64 bit, with
Microsoft .NET Framework 4.8 installed
Warranty
One year limited
The device specification may change without notice. Actual device may differ from this manual.