Systems and methods for modularized control of robotic adaptive optics and laser systems

Patent metadata

Field	Value
Publication number	US-9563053-B2
Application number	US-201313843265-A
Country	US
Kind code	B2
Filing date	Mar 15, 2013
Priority date	Apr 10, 2012
Publication date	Feb 7, 2017
Grant date	Feb 7, 2017

Abstract

An automated adaptive optics and laser projection system is described. The automated adaptive optics and laser projection system includes an adaptive optics system and a compact laser projection system with related laser guidance programming used to correct atmospheric distortion induced on light received by a telescope. Control of the automated adaptive optics and laser projection system is designed in a modular manner in order to facilitate replication of the system to be used with a variety of different telescopes. Related methods are also described.

First claim

The invention claimed is:

1. A system comprising:
at least one processor;
a control module coupled to the at least one processor and to a plurality of subsystems, the control module configured to operate a plurality of threads, each thread controlling at least one subsystem, the plurality of subsystems comprising:
a telescope;
a queue scheduler configured to access an observing queue, the observing queue comprising a list of desired targets for scientific observation, the queue scheduler configured to rank the desired targets based on current observing conditions;
an adaptive optics system;
an adaptive optics control subsystem coupled with the adaptive optics system, the adaptive optics control subsystem configured for monitoring the adaptive optics system hardware while the adaptive optics system hardware is in operation, the adaptive optics control subsystem comprising a tip tilt thread and a wavefront sensor thread, the tip tilt thread configured to stabilize positioning of a camera on an object being observed and the wavefront sensor thread configured to calculate the adaptive optics correction for distortion;
a laser projection system, the laser projection system configured to project a laser beam along an axis that is substantially parallel to a viewing axis of the telescope, and wherein a portion of the projected laser beam is returned by the atmosphere, the returned portion usable for measuring a dynamic wave front error introduced by the atmosphere by the adaptive optics system
a laser beam guidance subsystem coupled with the laser projection system, the laser beam guidance subsystem configured for controlling operations of the laser beam guidance system, the laser beam guidance subsystem comprising a laser safety thread used to monitor for safe operation of the laser projection system; and
an atmospheric dispersion corrector subsystem coupled with motorized rotating prisms of the telescope, the atmospheric dispersion corrector subsystem configured for monitoring a status of the atmospheric dispersion corrector hardware, said monitoring comprising sending commands to motorized rotating prisms used to do optical corrections, the atmospheric dispersion corrector subsystem comprising a motor position thread used to calculate a dispersion correction to be used with the motorized rotating prisms,

wherein the control module is configured to automatically request a target for scientific observation from the queue scheduler, the queue scheduler is configured to automatically determine the target based on a current ranking of the desired targets, and the control module is configured to automatically control the plurality of subsystems and automatically carry out scientific observation of the target without any user intervention.

2. The system of claim 1 , wherein the control module and the plurality of subsystems are communicatively coupled via TCP/IP using an operating system.

3. The system of claim 1 , wherein the control module and the plurality of subsystems are configured so that interaction between the control unit and a first one of the plurality of subsystems is independent of interaction between the control unit and a second one of the plurality of subsystems.

4. The system of claim 1 , wherein the control module and the plurality of subsystems are configured so that interaction between the control unit and the plurality of subsystems occurs jointly for at least two subsystems of the plurality of subsystems.

5. The system of claim 1 , wherein the control module automatically detects functioning of the plurality of subsystems by detecting absence or a failure of the plurality of subsystems.

6. The system of claim 1 , wherein the control module is configured to automatically operate a replacement subsystem of a selected subsystem.

7. The system of claim 6 , wherein the selected subsystem is a malfunctioning subsystem.

8. The system of claim 1 , wherein the plurality of subsystems further comprises: a telescope control subsystem coupled with the telescope, a visible instrument camera control subsystem coupled with a visible instrument camera, an infrared camera control subsystem coupled with an infrared camera, a telescope status control subsystem coupled to the telescope and a weather monitor control subsystem coupled to environmental observation hardware.

9. The system of claim 8 , wherein the telescope control subsystem is configured for managing operation of the telescope, said managing comprising sending commands to move and operate the telescope.

10. The system of claim 8 , wherein the visible instrument camera control subsystem is configured for monitoring a status of the visible instrument camera, said monitoring comprising moving filter wheels and selecting a particular mode of operation for the visible instrument camera.

11. The system of claim 10 , wherein the particular mode of operation for the visible instrument camera comprises taking regular camera images, taking rapid readout image sets and taking tip tilt control images and the visible instrument camera control subsystem further comprises a tip tilt image thread and rapid image readout thread used for respective modes of operation.

12. The system of claim 8 , wherein the infrared camera control subsystem wherein the infrared instrument camera control subsystem is configured for monitoring a status of the infrared instrument camera, said monitoring comprising moving filter wheels and selecting a particular mode of operation for the infrared instrument camera.

13. The system of claim 12 , wherein the particular mode of operation for the infrared instrument camera comprises taking regular camera images, taking rapid readout image sets and taking tip tilt control images and the infrared instrument camera control subsystem further comprises a tip tilt image thread and rapid image readout thread used for respective modes of operation.

14. The system of claim 8 , wherein the telescope status control subsystem is configured for monitoring the status of telescope, said monitoring comprising querying the telescope directly.

15. The system of claim 8 , wherein the weather monitor control subsystem is configured for monitoring an observatory weather system and check for safe environmental operating parameters, the environmental observation hardware comprises an observatory weather station, thermal sensors and humidity sensors.

16. The system of claim 1 , wherein the plurality of subsystems further comprises a science camera, and the system is configured to obtain a measurement of atmospheric seeing through the science camera while at a same time configuring the adaptive optics system.

17. The system of claim 1 , wherein the plurality of subsystems further comprises a blackbody point-source radiator and a UV light source, and the system is configured to automatically calibrate the adaptive optics system based on the blackbody point-source radiator and the UV light source.

18. The system of claim 16 , wherein the system is configured to automatically align and capture the laser beam projected on a sky.

19. A method comprising:
providing at least one processor;
providing a control module coupled to the at least one processor and to a plurality of subsystems, the plurality of subsystems comprising:
a telescope; an adaptive optics system; a queue scheduler; a laser projection system; a telescope control subsystem coupled with the telescope, a laser beam guidance subsystem coupled with a laser projection system hardware, an atmospheric dispersion corrector subsystem coupled with moto

Assignees

• California Inst Of Techn

Inventors

• Riddle Reed
• Baranec Christoph

Classifications

• G01J9/00

  Measuring optical phase difference (devices or arrangements for controlling the phase of light beams G02F1/01); Determining degree of coherence; Measuring optical wavelength (spectrometry G01J3/00) · CPC title

• G01J3/0237

  Adjustable, e.g. focussing · CPC title

• G01J3/36

  Investigating two or more bands of a spectrum by separate detectors · CPC title

• G02B23/02

  involving prisms or mirrors (G02B23/14 takes precedence) · CPC title

• G02B23/00

  Telescopes, e.g. binoculars; Periscopes; Instruments for viewing the inside of hollow bodies; Viewfinders; Optical aiming or sighting devices · CPC title