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Summary of Contents for AOS Hartmann
- Page 1 Hartmann Sensor Manual 2021 Girard Blvd. Suite 150 Albuquerque, NM 87106 (505) 245-9970 x184 www.aos-llc.com Version 1.0 – 10/2/12...
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Page 2: Table Of Contents
Limitations of Hartmann Sensing ..................3 Quick-Start Installation Guide ....................4 General Wavefront Sensor Usage ................... 4 Warnings and Usage Advice .................... 4 Typical Hartmann Sensor Use – Quick Start Guide ............5 3.2.1 Comments about Reference/Calibration Files ............5 3.2.2 Alignment to an Absolute Reference ................ -
Page 3: Introduction
1.1 Device Operation A beam of light illuminating a Hartmann sensor is divided into pieces by the sub-apertures of the aperture array. The position of each spot diffracted from the apertures is directly proportional to the average wavefront slope. Wavefront slope measurements are made differentially by comparing the position of the diffracted spots on the sensor with those measured for a reference wavefront. -
Page 4: Quick-Start Installation Guide
3 General Wavefront Sensor Usage 3.1 Warnings and Usage Advice Cleaning: The Hartmann array is not designed to be cleaned. It can be sprayed gently with pressurized air to remove dust, but aggressive cleaning will damage the device. Damage induced by cleaning will void the warranty. -
Page 5: Typical Hartmann Sensor Use - Quick Start Guide
Hartmann sensors measure the differential tilt between two images. When using a Hartmann sensor, the reference can be taken by the user or can be that provided by AOS. The next section describes how to align a Hartmann sensor to an absolute reference file. The following section describes how to create a relative reference file and use the AOS Hartmann Wavefront Sensor (HWFS). -
Page 6: Creating A Relative Reference
HWFS. The corner sub-apertures of the AOS HWFS are not well illuminated due to the limited size of the Hartmann screen clear aperture, so a user can look at these corner sub-apertures to determine if the HWFS is well aligned to the beam. The corner sub-apertures should be equally illuminated when the beam is larger than the Hartmann sensor. -
Page 7: Gige Wavefront Sensors
4.2 GigE Wavefront Sensors The AOS software supports any of the GigE cameras available from Allied Vision Technologies (www.alliedvisiontec.com). We have found that these sensors work with many standard gigabit Ethernet cards, but not all of them. AVT has an application note entitled, “Hardware Selection for AVT GigE Cameras”... - Page 8 NOTE: Dimensions are in millimeters. Version 1.0 – 10/2/12...
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Page 9: Software
5 Software The software is now documented in the AOS Adaptive Optics Software Manual. 6 Appendix: Select Camera Parameters Summary Parameter Fire-i Stingray Guppy Guppy Marlin SU320KTS Prosilica Webcam F-033B F-036B F-503B F-131B W-1.7RT GT1920 X Pixel Size (μm) 4.54... -
Page 10: Appendix: Discontinued Sensor Information
7 Appendix: Legacy Sensor Information 7.1 USB Webcam Hartmann Sensors (discontinued) The USB Webcam Hartmann Wavefront Sensor has been discontinued and is being replaced with the Firewire Webcam Hartmann Wavefront Sensor. Here are notes for legacy users: The webcam housing is plastic, and, as such, is susceptible to fracture due to excessive force. -
Page 11: Fire-I Webcam Firewire Wavefront Sensors (Discontinued)
7.2 Fire-I Webcam Firewire Wavefront Sensors (discontinued) 7.2.1 Instructions and Warnings Camera Settings for Fire-I Wavefront Sensor: The Fire-I wavefront sensor should be setup adjusting only the shutter. Camera Settings for Marlin & Stingray Wavefront Sensor: The Marlin & Singray wavefront sensor should be setup with a brightness of 16 and a gain of 1. -
Page 12: Package Dimensions
7.2.3 Package Dimensions Version 1.0 – 10/2/12...
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