What is Dynamiter?

Dynameter is a measuring device that is used to measure the binoculars of the telescope where the eyepiece is connected, which differs somewhat from the actual level of the lens itself. It is usually a hand or home device that resembles a small tubular eyepiece, and is often used to determine the strength of the old telescope where there is no manual or model number or if there is no written focal length on the body. The focal length of the eyepiece (EFL) or the focal length of the pupil (EP) usually affects the magnification values ​​by only 2% to 3% from the actual level of binoculars enlargement, but estimates on older telescopes may vary by up to 20% of what is actually the actual focal length. This variation can be important in observing and reporting astronomical observations using such tools.

strictly, the dynamist is one of the wide range of telescope tools that have a very close use. It is designed to measure three different parametersin tandem. This is the diameter of the output pupil or EP; distance between the physical eyepiece on the tool and EP; and the level of tool enlargement in general. Dynameter does this by the fact that its design is based on the principle of a double image micrometer, making it a miniature compound microscope that compares the image created on the eyepiece with the size of the image created by the lens.

6 This is known as the focal length of the lens and the lens itself is often referred to as glass, object object or object lens. Measuring tools, such as dynamicity, these two quantities of the image made and the appearance of the image on the eyepiece and use them to determine the focal length and magnifying force of the device.

In the design of the previous telescope, the focal length values ​​were written on a eyepiece based on values ​​derived from similarly produced eyepieces and not real observations of measurement by dynameter. That couldresulted in an overflow of the device, such as 294 strength, when the actual magnification was 250. Although this is not the main problem for the occasional star observation, when recording events for scientific study can lead to a significant error in data analysis.

Dynameter can make a simple calculation of enlargement by dividing the value of the input pupil (EN) by the EP value. The input pupil is defined as an image that enters the tool opening and impact on the lens lens. The creator used in the dynamier is therefore M = EP/EP and an example of magnification (M) would be 200 millimeters divided by 5 millimeters for M 40x.