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Saturday, 10 March 2012

Running NIPON EE300 digital eyepiece under Windows XP system

This upgraded digital device should work straight away under the updated windows XP system, so there is no need to install anything from the CD (some of the information on the printed sheet can be related to previous versions of the windows systems). Just plug the device into a USB slot, and then open "My Computer". You should see a camera icon on the hardware list. Double click that icon, you can see the image viewing window. This is what you see through the telescope. You can take pictures using the button located on the top-left manual bar of the computer screen.

For video recording, you can install the driver by following steps 3.4 & 3.5 of the User Manual (skip step 3.3). Note: if you use a laptop that has a built-in webcam, there can be a conflict between the existing software for the webcam and the new video driver you try to install. Check to see if you can share the webcam software with the digital eyepiece, or use a computer that does not have a built-in camera system (this is related to video recording function under Win XP only. You don't have this issue with Win 7).


  1. The EE300 digital eyepiece will not fit my Mieji triocular microscope photo-tube OD.= 25mm. ID.= 23mm. What microscope is the EE300 meant for Thank you!

    1. You would need an eyepiece adapter which converts the microscope eyepiece tube into a standard 1.25" (31.7mm) diameter barrel. Alternatively, the digital eyepiece can be held in the place of the microscope eyepiece barrel by a simple method (eg. use an elastic band to attach the USB cable along the side of the eyepiece tube), and this will keep the eyepiece in place. It's not perfect, but it works, and I have taken a few pictures in this way.

      By the way, depending on the type of slides to be viewed, you may need to adjust the magnification and lighting levels of the microscope to get the exposure right for the digital eyepiece. Somewhere between 100x and 200x magnifications seems to be OK for picture taking.

  2. My EE300 has a threaded section on the 'eyepiece' that allows the lenses, by rotation, to be moved closer or further away from the chip. What is the effect of this adjustment? There is nothing in the User Guide to explain this adjustment.

  3. The threaded section allows the digital lens to be slightly adjusted in relation to the chip (light sensor) according to the type of telescopes it is used. The factory/default setting of the lens is based on telescopes with about 800mm focal length, and most telescopes (with either shorter or longer focal length) can accommodate the image focusing need of this setting by means of the telescope's focusing system. It is advised to keep the digital eyepiece at its default setting (i.e., the middle tube is almost at the same height level of the outer tube, and keep the central lens tube and the middle tube tightened together).

  4. Just to add a little more information along the same line of discussion -
    For telescopes with longer focal length than 800mm, if the image display on your PC screen is not ideal, move the lens further away from the chip, and vice versa. But do this only when it's necessary for better image formation on the screen. Image quality can be improved through adequate adjustment to the software setting (eg. by reducing the brightness and increasing the contrast).