8.10.2005 Astronomisches Institut der Ruhr-Universität Bochum

1

HPT

Roland Lemke

Thomas Jürges (NRAO)

Martin Paegert

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Introduction History

Program inception 1986 Feasibility studies 1988 fund of 8M DM by the Ministry of

Economics, Trade and Technology, NRW 1989

Poltical problems, between AIRUB and industry and reunifcation 1992

Several attempts meanwhile

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History (cont.) Ministry of School, Education,

Science and Research (MSWWF), NRW grants new funds 1997

HPT comes to Bochum 1999 Replacing of the old driving system

2001 Replacing of the old software

system 2002 First pointing tests 2003 Shipment to Chile June 2005

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Technical concept direct-motor driven roller

screw, accuracy 10 nm weight of a single leg is

about 200 kg Optical configuration

1.5m primary mirror Focal ratio f/D = 2.5 Field rotation 45 deg

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M1

55mm thin meniscus, weight 120kg, 1.2 t/sqm VLT 10 t/sqm

an actively controlled primary which consists of a thin Zerodur meniscus that is permanently fixed to a CFRP grid structure

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M2

a secondary whose support legs are also designed as a Hexapod to compensate for gravitational deformation

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Code generation Automatic generation of an

Component from a given IDL, including *.h and *.cpp files Makefile *.body function body *.xsd and *.xml files for CDB QT GUI

talk tomorrow by Martin Paegert

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Software

Shack Hartmann

DSPACE

hptMount

ACS Real TimeFIFOs

CA

N

CCD

MCU

Motors

Encoders

hptM1

hptM2

IK220

PIC-6534

hptGuiding

Serial driver

CCD

hptWebCam

devIO to accessvideo for linux

driver

hptGPS

Direct interface tolinux kernel module

hptPad

Acces to joystickdriver

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CCD software Different types of camera hardware

but only one ACS module Camera factory class One interface class

Class structure:

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CCD: class structure

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ACS in CCD´s real life: What is in use now?

Monitoring possibilities Triggering of applications

Data transfer via sequences

(later via Notification Channel or bulk data channel)

1 Module – 3 CCD camera manufacturer (+ 1 simulation) – 4 different configurations

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Next steps After infrastructural problems are solved,

assembly of telescope and electronics Commissioning Science verification

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The usage of ACS

Easy to integrate peripherials (GPS clocks, Game pads, WebCams, CCDs, Motor control units, DIO and AIO boards)

Easy to develop GUIs with Python and Qt MS-Windows drivers

Directly ported to Linux Using an ACS Version ported to Cygwin

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Conclusions ACS does what is required Sharing code among projects Discussions between the groups

using ACS