On the trail, at the job site, in the classroom, or simply sitting at home relaxing – the Celestron Elements ThermoTank 3 will keep your hands toasty.

Objective lensmicroscope function

Ocularlens magnification

This rugged, 3-in-1 device features a true tactical 3-mode flashlight, a hand warmer, and a portable power bank for recharging your personal electronics on the go.

Low powerobjective lens

This rugged, 3-in-1 device features a true tactical 3-mode flashlight, a hand warmer, and a portable power bank for recharging your personal electronics on the go.

Great for home, classroom, or home-school use, this kit includes all the essential items you’ll need to begin exploring the wonders of the microscopic world.

When using a voice control device such as Alexa or the Google Assistant with your Harmony setup, commands are sent through your hub. Changing a device to be controlled directly from your remote will prevent it from working with any hub dependant Activities. In other words, these devices can no longer be controlled by voice.

High powerobjective lens

Microscope objective lenses will often have four numbers engraved on the barrel in a 2x2 array. The upper left number is the magnification factor of the objective. For example, 4x, 10x, 40x, and 100x.The upper right number is the numerical aperture of the objective. For example 0.1, 0.25, 0.65, and 1.25.

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Great for home, classroom, or home-school use, this kit includes all the essential items you’ll need to begin exploring the wonders of the microscopic world.

What isobjective lensin microscope

On the trail, at the job site, in the classroom, or simply sitting at home relaxing – the Celestron Elements ThermoTank 3 will keep your hands toasty.

Harmony Hub-based remotes allow you to assign devices to be controlled by a specific IR port or the Harmony handheld remote itself. Assigning a device to a specific IR port will help isolate it from other devices so you can precisely control the commands that your devices get.

The lower right number (if given) refers to the thickness of the glass cover slip (in millimeters) assumed by the lens designer for best performance of the objective. Example: 0.17.The lower left number is the tube length in millimeters. This is related to the standardization of microscopes and the particular standard used for the manufacture of your microscope. Most microscopes employ the Deutsche Industrie Norm, or DIN standard configuration. The Japanese Industrial Standard (JIS) is less commonly used. DIN microscopes begin with an object-to-image distance of 195 mm, and then fix the object distance at 45 mm. The remaining 150 mm distance to the eyepiece field lens sets the internal real image position, which is defined as 10 mm from the end of the mechanical tube (which gives the 160 mm tube length). DIN standard eyepieces have an international standard 23 mm diameter. DIN standard objectives often times have "DIN" etched on the side and have a standard 0.7965 in diameter thread, 36 TPI, 55° Whitworth threading. Celestron microscopes are made to DIN standards. The tube length for the DIN standard is 160 mm, while for the JIS it is 170 mm.NOTE: JIS objectives can be used on a DIN microscope and vice versa. The threads on both types are interchangeable. However, since the optical distances are different, there will be a difference in magnification. A JIS objective used on a DIN microscope will have a slightly lower magnification than the rated magnification since the DIN tube is shorter. And a DIN objective used on a JIS microscope will have a slightly higher magnification than the rated magnification since the JIS tube is longer.