31 results about "Equatorial mount" patented technology

This invention relates to a control device for controlling an astronomical telescope and, specifically, to a control device for automatic locating of celestial bodies, and to a method for controlling an astronomical telescope. The control device comprises a power input interface, a master controller, and an intelligent motor drive controller. The master controller comprises a CPU, an optional RAM, a FLASH microprocessor, one or more buttons, an LCD, a buzzer, one or more backlight diode lamps, one or more LED lights, a serial to USB interface, and an internal serial bus. The intelligent motor drive controller comprises a chip microprocessor having IAP functions, a two-way reversible PWM driving circuit having an output end and a detection end, a direct current motor, an optical encoder, an optical encoder detection circuit, and an over-current protection circuit. By calculating the coordinates of target bodies and converting them to equatorial mount coordinates, the microprocessor in the intelligent motor controller controls the motor to run, realizing the tracking of target celestial bodies.

The invention discloses an astronomical site-selecting instrument guide star device and a working method thereof. The astronomical site-selecting instrument guide star device consists of a lens, a camera and guide star software, wherein an output signal is connected with an equatorial telescope. The astronomical site-selecting instrument guide star device is characterized in that an automatic guide adapter is arranged between the guide star software and the equatorial telescope. The automatic guide adapter is composed of a micro controller and a four-path switch switcher; the camera is used for continuously taking a candid photograph of the target area, and providing the candid photograph to the guide star software through a computer; the guide star software is used for processing the target area image, identifying a target celestial body, and sending the target celestial body position correction amount to the automatic guide adapter which controls the movement of the equatorial telescope. According to the astronomical site-selecting instrument guide star device disclosed by the invention, a star searching function and a star guide function share the same hardware, the device is simple; the target celestial body is automatically identified through an algorithm, and the astronomical site-selecting instrument is assisted to automatically search and point the target celestial body; the correction amount of target celestial body position is calculated in real time through the algorithm, and fed back to the equatorial telescope through the automatic guide adapter, so that the target celestial body is automatically tracked; when a telescope is caused to shake by wind load, the target celestial body also can be tracked.

The invention discloses a novel equatorial telescope which comprises a base, an hour angle mechanism, a drift angle mechanism and the like. An hour angle worm gear and a drift angle seat are arranged on an hour angle shaft in a sleeving mode respectively, a fit clearance of the hour angle worm gear and the hour angle shaft is in accordance with that of the drift angle seat and the hour angle shaft, an hour angle shaft worm is fixed on a set position of the drift angle seat and meshed with the hour angle worm gear, when the hour angle worm gear is locked with the hour angle shaft under the action of a clutch locking mechanism, the hour angle worm rotates around the hour angle worm gear, and therefore the drift angle seat is driven to rotate around the hour angle shaft. According to the novel equatorial telescope, the hour angle worm gear and the drift angle seat are arranged on the hour angle shaft in a sleeving mode respectively, and the fit clearance of the hour angle worm gear and the hour angle shaft is in accordance with that of the drift angle seat and the hour angle shaft; due to the fact that only one type of the fit clearance exists, accumulation of fitting errors does not exist, and therefore the bearing capacity of the equatorial telescope is increased, precision of celestial body tracking is improved, and the stability is improved.

The invention provides a focal length measuring method based on a star ground observation system, relates to the technical field of imaging instrument focal length measurement, and solves the problem that a one-dimensional spatial information slot-type imaging spectrometer cannot carry out field focal length measurement easily. The method comprises the steps of: calibrating an equatorial telescope polar axis, starting a star tracking system, utilizing an equatorial coordinate system of the equatorial telescope and the change relation between star signals and the visual field position in the instrument to carry out fine tuning on the slot height direction of the imaging spectrometer so as to enable the slot height direction to be perpendicular to a declination axis of the equatorial telescope, utilizing a high-precision equatorial coordinate control system of the equatorial telescope to use stars in the universe as point light sources, and rotating a fixed angular distance in the spatial dimension of the imaging spectrometer so as to calculate the focal length of the optical system. The star ground observation system is mainly composed of the equatorial telescope, an astronomical telescope and the imaging spectrometer, the measuring structure is simple, and the precision and efficiency of focal distance measurement are effectively improved by the usage of the equatorial telescope.

The invention discloses a polar axis calibration mechanism of an equatorial telescope and a calibration method of the polar axis calibration mechanism. According to the polar axis calibration mechanism of the equatorial telescope, the equatorial telescope comprises a base, an hour angle assembly, a drift angle assembly, a latitude adjusting mechanism connected with the hour angle assembly, a horizontal direction hand wheel arranged at the lower end part of the base, and an hour angle locking handle wheel arranged at the tail end of the hour angle assembly; the polar axis calibration mechanism comprises a mounting plate, a connection seat, a polar axis lens and a gradienter; one end of the mounting plate is fixedly arranged at one side part of the drift angle assembly; the connection seat is connected with the other end of the mounting plate; the polar axis lens is arranged in the mounting plate and the connection seat in a manner of vertically penetrating and can be rotated in the mounting plate and the connection seat; the polar axis lens is internally and fixedly provided with a dividing plate with clock scales; the gradienter is fixedly arranged on the upper end face of the connection seat. The calibration mechanism is simple and reasonable in structure; the calibration of a polar axis can be rapidly and conveniently realized.

The invention discloses a latitude regulating mechanism of an equatorial telescope. The equatorial telescope comprises a supporting seat and an hour angle assembly, wherein the hour angle assembly is mounted on the supporting seat and can rotate round the supporting seat. The latitude regulating mechanism comprises a worm wheel, a worm, a joint, a compression spring, a wrench and a limit screw, wherein the worm wheel penetrates through a slot in the side face of the supporting seat and is fixedly connected with the hour angle assembly, and the worm is horizontally arranged under the worm wheel and meshed with the worm wheel; the joint is fixed arranged at one end of the worm, and the compression spring is arranged on the joint in a sleeving manner; the limit screw penetrates through a through hole in the wrench and is fixedly connected with the tail end of the joint, and the wrench is limited at the tail end of the joint; a tooth-shaped structure hinged with the exterior outline of the joint is arranged in the through hole in the wrench and can slide along the joint. The latitude regulating mechanism can achieve a protection effect after precisely adjusting the latitude of the equatorial telescope, and prevents change of the latitude of the equatorial telescope caused by accidental touch, thus overcoming the defects of the prior art.

The invention relates to an equatorial telescope synchronization method, aims to solve the technical problems of large manpower consumption and large precision error caused by the fact that an equatorial telescope synchronization correction method in the conventional astronomical observation field adopts a manual observation and adjustment method, and provides a foundation moon-to-moon observationequatorial telescope synchronization method. The method employs a finderscope to recognize the geometry center of the moon through image processing; the equatorial telescope can be synchronized without strictly aligning a slit type spectrograph with the optical axis of the finderscope, and a minimum circumscribed circle algorithm adopted for identifying the geometry center of the moon is not influenced by the lunar phase, and the center of the lunar sphere can be accurately identified without judging the lunar phase; the equatorial telescope is synchronized through the geometry center of themoon, additional star map data is not needed, and the synchronization method is accurate, simpler and more convenient.

The invention discloses a novel polar axis telescope which comprises an optical telescope, a display screen replacing a reticle and a control circuit. The display screen is provided with one or more circles of packaged breakpoints, each breakpoint is provided with a transparent wire to be connected with the control circuit, and the control circuit controls each breakpoint to be turned on and turned off. The angular radius of the one-circle or multi-circle breakpoint circular ring is 1 degree and is the same as the radius of the circumferential angle of the north-of-the-day round of the arcticstar; a time position acquisition module is integrated with the control circuit; the control circuit calculates the clock position of the arctic star relative to the north of the sky according to theobtained geographical position and time, and lightens a breakpoint representing the correct position of the arctic star; the north polar star and the correct position needing to be adjusted are observed at the same time in the field of view, and the north polar star is adjusted to coincide with the breakpoint lightened at the correct position, so that the equatorial telescope can be accurately aligned to the north-sky level to bypass the right ascension axis to achieve accurate tracking. Additional auxiliary equipment is not needed, and a user is assisted to rapidly and accurately align to thenorth pole.

The invention relates to a lunar calibration method, and provides a lunar positioning method for a slit type spectrograph in order to solve the technical problems that when foundation lunar observation is conducted through cooperation of the slit type spectrograph, an equatorial telescope and a guide star mirror, spectral image transformation is established, the right ascension and declination coordinate transformation corresponding relation of the equatorial telescope is difficult, and consequently the observation error is large. By establishing the corresponding relationship between the moonimage change of the slit type spectrometer and the right ascension coordinate and declination coordinate change of the equatorial telescope serving as the rotary table, the equatorial telescope can be accurately corrected in the moon positioning process, so that the pointing error of the equatorial telescope is avoided, the moon calibration accuracy is improved, and the problem of accurate moon positioning of the slit type spectrometer is solved.

The invention relates to an equatorial telescope mechanism capable of stably bearing loads. The equatorial telescope mechanism comprises a latitude base, an hour angle base, a deflection angle base, aright ascension shaft and a balance weight. The latitude seat comprises a seat body, the two sides of the base body are vertically connected with the side plates correspondingly, and arc-shaped sliding grooves are respectively formed at the inner side. The two sides of the hour angle base are connected with sliding rails respectively, arc-shaped protrusions are arranged on the two sliding rails respectively, correspond to each other in a one-to-one correspondence manner, are arranged in the sliding grooves, penetrate through the two ends of the sliding grooves and are in slip and cooperativeconnection with the sliding grooves. One upper end of the hour angle base extends to form a columnar protrusion, and the other upper end is fixedly connected with right ascension shaft. The columnar protrusion is coaxial with the right ascension shaft, the two lower ends of the deflection angle base are rotationally installed on the columnar protrusion and the right ascension shafts through bearings respectively, and the balance weight is connected with the deflection angle base through a balance weight rod. According to the equatorial telescope mechanism, a G-shaped structure is formed, the borne weight is located at the two ends of the mechanism, equivalently, the weight of all the loads is divided into two parts, the two ends bear half respectively, and therefore the equatorial telescope mechanism is higher in bearing capacity and is more stable.