Setting circles on an astronomical telescope are used as an aid to pointing the telescope at a particular object in the sky based upon the object`s celestial coordinates. However, setting circles can be difficult to use effectively and are usually not precise enough for putting objects in the telescope`s field of view. Digital setting circles, on
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the other hand, can be made to be much more precise and fairly easy to use, making it relatively simple to find faint fuzzies in the sky without lots of star hopping. What are digital setting circles You`ve probably seen them in ads in the astronomy magazines: NGC MAX, Sky Wizard, and Sky Vector, to name a few. They`re hand-held electronic devices which, when coupled with encoders which precisely measure the movement of the telescope on its axes, can tell you precisely where your telescope is pointed, or can guide you directly to an object you specify. (It`s worth noting that digital setting circles do not move your telescope. Rather, they simply give you feedback as you move it yourself. ) Some digital setting circles systems interface to a PC and can be controlled by software. TheSky, Megastar, and Earth Centered Universe are examples of commercial PC software which can communicate with digital setting circles systems. All of these packages integrate a planetarium view with the system and can be quite useful on portable computers used with the telescope in the field. The project which I describe below is simply an interface between the encoders mounted on the telescope and a PC running appropriate control software. It is not a stand-alone unit it is useless without a PC to communicate with it. It is compatible with several other types of digital setting circle interfaces, including BBox, NGC-MAX, SGT-MAX, and MicroGuider...
This project fits more for custom made battery casing that can have more space to hide things inside. This switch with few alterations can be used for any other project as well but is designed based on e-bike needs! This project use a clever functionality of....
The circuit described here uses ultrasonic oscillations and operates based on the propagation velocity of these oscillations in the air. Thus, we can easily determine the distance of two points if the time within which the wave travels this distance is....
Sometimes the precious metals are hidden too deep and are not detected except with complicated devices. In many cases, however, small pieces of precious metal buried near the surface can be detected by relatively simple means. Everyone is very attractive to....
Many times for various reasons we forget or can not water the plants that we have in our homes. And many humidity sensors units just notify us with a beeping sound or with a flashing light, that the pot needs watering. But what if we are away from home? This....
The principle behind a metal detector is really very simple. Proof of this is the circuit that follows, in which it proves that the construction of a metal detector can be done in the minute, with few components that we find very easily everywhere. With the....
The sub-harmonic bass generator is a sound producing unit for guitars. The sound it produces looks very much like that of the bass guitar. The octave generator is sometimes quite unusual since it does not produce any of the usual ways of coloring the sound,....
In the past the sounding (sea bottom measurement) was done with the "bullet", that is, with a heavy lead object that the seamen plucked into the sea hung from a calibrated rope. As soon as the "bullet" reached the bottom, the depth appeared directly from the....
This Amplifier was designed to have the following specifications: Distortion less than 0.1% at full power of 100W even at 20KHz. Power has to be attributed to an extended bandwidth. The output transistors must be protected against short circuits. The power....
A series of LEDs serve to alert the gardener when plants need water. Using two conventional digital integrated LEDs and a series of LEDs, we make a very useful device for gardening. The device detects the amount of water in the pot and alerts the grower.....
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