13-14 April 2002Inamori-Magellan Areal Camera & Spectrograph 1 IMACS: Inamori-Magellan Areal Camera and Spectrograph Magellan SAC Status Report 13-14 April

13-14 April 2002 Inamori-Magellan Areal Camera & Spectrograph

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IMACS:Inamori-Magellan Areal Camera and

Spectrograph

Magellan SAC Status Report

13-14 April 2002

OCIW, Pasadena, Ca


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IMACS project team:

A. Dressler Pr. Investigator

B. Bigelow Instrument Scientist

B. Sutin, H. Epps Optical des./eng.

B. Bigelow, T. Hare

S. Gunnels, G. Luppino,

R. Cleary Mechanical des.

V. Kowal, R. Storts, J. Castillo Mechanical fab.

A. Bagish, D. Carr, J. Asa Electronics

G. Burley, I. Thompson, J. Estrada Detector systems

C. Birk, K. Clardy Software eng.


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Optics Status:

Collimator:

C01 (Field lens) Done, ready to mount in cell

C02 - C05 Done, mounted in structure

Long Camera:

L01 Done, mounted in cell

L02/L03/L04 Lenses done, will be

re-mounted in cells

L05, L06 Done, mounted in cells

Long camera should be fully assembled by end of April 2002


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Optics Status cont.

Short Camera:

S01, S08 (aspheres) At Tinsley, due 6/02

S07 At TORC, due end of April?

S02-S09 Ready to be coated at STF

Filters:

2 sets of CTIO B,V,I, Done

2 sets of CTIO R Due end of April ‘02

CTIO U (LCAM) Awaits ADC coating results

Sloan u’, g’, r’, i’, z’ Not ordered


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Current grating selection:

RulingDensity

Lines/mm

BlazeAngle

Degrees

Order CentralWavelength

um

WavelengthRange

um

DispersionR/0.5 arcsec

slit300 4.3 1 0.665 0.365-0.974 2163

300 36.87 5-11 0.336-0.738 0.308-0.799 20687

600 8.63 1 0.518 0.365-0.675 3494600 13 1 0.841 0.684-1.0 6120

1200 17.45 1 0.444 0.365-0.523 65351200 26.7 1 0.924 0.864-1.0 20694

1200 26.7 2 0.404 0.365-0.443 15776

1200 26.7 2 0.520 (max) 0.482-0.557 28082


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Optics Status cont.

Grisms:

200 l/mm Undersized mat’l re-ordered

300 l/mm Material due in August

600 l/mm Material due in May

Imaging Mirror: Mirror is being re-coated

following failure of

over-coated silver.


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Mechanical Engineering Status:

Guide camera stages (Hare) Done, mods. IP

Mask server (Bigelow) Done, on structure

*Field Lens (Hare) Ready for mounting

LCAM shutter (Hare) Done, ready to install

Filter servers (Bond) Done, ready to install

*Disperser server (Hare) Assy. IP, drive remaining

*Grating cells Assy. IP

*Grism cells Designed, ready for draft.

Mirror cell Done


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Mechanical Engineering cont.

Collimator mech. (Bigelow) Done, installed

*Long camera mech. (Bigelow) Final Assy. in April

Short camera mech. (Bigelow) Done, ready for optics

Dewar (Luppino) Done, ready for CCDs

Instrument Structure (Gunnels) Done, installed

*Instrument Carriage (Gunnels) Done, minor mods. IP

*Instrument Enclosures (Gunnels) Design IP


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Center-field guide camera assembled and tested


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Long camera with shutter, FS, and dewar mounted


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Electronic Engineering:

Alan Bagish (OCIW) is completing the electronics design for IMACS. Joe Asa is providing final assembly services on a consulting basis. Status of electronics:

Schematics design (all motion stages) Done

(4) Motion control (MC) chassis, Done

(1) Power supply chassis, Done

(1) Shutter control chassis Done

(2) Electronics racks for chassis IP

Instr. wiring harnesses IP


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Detector systems:

Guide cameras:

- 23 cameras have been fabricated

- IMACS currently has one of three needed

- Remainder by May ‘02?

Science array:

- Detector array (8 CCDs) has been flattened to 7.5 microns

- Individual detectors flat to 13 microns

- Dewar and detector system mechanics done

- Cold test of array in May


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Software:

Guiding (Clardy):

- Guider position control GUI Done

- Guider position graphical display Done

- Interface to telescope control ****


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Slit Mask Cutting (Clardy) :

- Mask Generation (MG) ****

inputs - images, data files, other

output - text file with targets, names, etc.

- Mask Definition (MD) Done

- inputs - text file from MG, other text files

- output - mask definition file

- database for observing, data reduction

- Mask Fabrication (MF) Done

- inputs - mask definition file

- output - test, laser G-code, mill G-code, .ps files


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Software:

Instrument Control (Birk)

Individual module testing:

Module GUI status H/W testsPr. Guider done 75%SH guider done 75%CF guider done 90%Slit Mask Server done 75%Disperser Server 25% 0%Long Camera Focus done 90%Filter Servers (2) done 90%Flexure Control done 75%Detector Focus 25% 0%HP Sensor System done 50%


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Software:

Instrument Control cont.

Integrated instrument testing:

- One GUI at this level, showing all critical aspects of each module (encoder positions, limit status, temperatures, etc).

- This GUI is written and 75% tested, unfinished stages remain (Disperser Server, Grating tilts, detect. focus)

User Level Software:

- Two GUIs at this level:

- Instr. control interface (select a grating, etc.) - 50% done

- Graphical Instr. Status Display - 25% done


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Examples of individual stage test GUIs

Filter server GUI

SH guider GUI


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Engineering GUI, shows status of all stage functions and sensors, operates in parallel for all modules.


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User/Observer instrument control GUI


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Graphics-based instrument GUI


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Software:

Science Array Control (Birk)

Shutter control:

- micro-controller for linear motors 90% done

CCD readout / camera control:

- ‘ccdserver’ for array readout

- ‘camgui’ for user interface

- both are functional 75% done

Quick-Look Tool:

- functional with simulated data 90% done


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Detector GUI

Quick-look tool


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Slit Masks:

Laser system:

- Convergent Gemini 150 W. CO2 laser cutting system

- Ordered November 7, 2001 - $280K

- Acceptance testing completed March 18-22, 2002

- Currently in shipment to Chile

- Due at LCO May 1, 2002

ASB Facility:

- 200A electrical service required

- Air compressor delivered, installation required

- Ventilation, fire, and fume extraction systems still required


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Slit Masks:

Slit mask blanks:

- Fabricated by California Hydroforming

- Current order of 100 mask blanks in progress

- Order of 1000 parts to follow first delivery

Mask cost:

- Estimated to about $100 per mask, including laser

(500 masks/year for 10 years)


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Coming up:

- First light through optics - end of April

- Grating tilt mechanism assembly and testing - flexure

- Cold testing of CCD array - May

- Instrument enclosures - August

- All short camera optics coated - September

Documents

13-14 April 2002Inamori-Magellan Areal Camera & Spectrograph 1 IMACS: Inamori-Magellan Areal Camera and Spectrograph Magellan SAC Status Report 13-14 April