Instruction Manual for Celestron Popular Science 12X42 Binoculars

Quick guide from the manual

This document provides instructions for the Celestron Popular Science 12X42 binoculars, including the use of the included smartphone adapter and Bluetooth remote. Key procedures include adjusting the interpupillary distance (IPD), calibrating the diopter for individual vision, and mounting the smartphone adapter for photography.

Parts of a binocular

The binoculars consist of eyepieces, eyecups, a diopter compensation dial, a center focusing ring, objective lenses, and a tripod adapter thread located under a cap.

Adjusting the interpupillary distance (IPD)

To align the binoculars with your eyes: hold the binoculars with both hands and move the two halves about the hinge until you see one single, clear circle of image through both eyes.

Setting the diopter compensation

This adjustment ensures both eyes are accurately focused. 1. Pick a subject 50 yards away. 2. Cover the right objective lens. 3. Use the center focus dial to bring the image into focus. 4. Uncover the right lens and cover the left lens. 5. If the image is blurry, use the diopter compensation dial to focus. 6. Uncover both lenses; the image should now be clear for both eyes.

Using the smartphone adapter

1. Twist the binocular eyecups to the lowest position. 2. Pull the spring clamp arms outward to secure your smartphone. 3. Loosen the smartphone clamp position knob to align the adapter aperture with the phone camera lens. 4. Fit the eyecup cuff over the binocular eyepiece and tighten the tension knob. 5. Activate the camera and adjust the position until the image is centered. Use the phone's zoom to remove vignetting.

Using the Bluetooth remote

1. Insert a CR2032 battery with the positive side facing up. 2. Press and hold the button for 5 seconds until the blue light blinks to enter pairing mode. 3. Pair the device named GBshutter in your phone's Bluetooth settings. 4. Use the button to trigger the camera shutter or start/stop video recording.

Care and cleaning

Keep lenses clean to maintain brightness. Use a camel's hair brush or pressurized air to remove dust, then clean with a Celestron Lens Cleaning Kit or LensPen. Avoid touching glass surfaces with fingers, as oils can damage coatings. Never attempt to disassemble the binoculars.

Safety

Do not look at the Sun through the binoculars or with the naked eye, as this can cause permanent damage.