DEIMOS

This is DEIMOS ("The Spectrograph"...pictured here as a 3D engineering model ), not to be confused with

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DEIMOS is a general purpose, faint object, multi-slit, double-beam spectrograph designed to operate at the right Nasmyth platform of the 10 meter Keck-II telescope located atop Mauna Kea in Hawaii. It utilizes slitmasks to allow the spectra from many objects (approx 80 per barrel!) to be imaged onto a mosaicked CCD array. Some of the key features are wide spectral coverage (up to 5000 Å per exposure), high spectral resolution (down to ~1 Å), high throughput, and long slit length on the sky (32'.6, sum of both barrels). DEIMOS operates in three modes: direct imaging, single-object spectroscopy, and multi-object, long-slit spectroscopy. DEIMOS will share the Nasmyth platform with the UCLA IR instrument NIRSPEC

The Principal Investigator on this project is Sandra Faber.

There is an Official DEIMOS home page which is maintained by Steve Allen of the UCO/Lick software group. He is currently working with a R.A.I.D. of Quantum disks to store the tremendous amount of data generated by the array of CCDs.

Work is being done on the GUI, mask fabrication, and data reduction by Drew Phillips

Recent work on DEIMOS has been slow owing to the higher priority put on finishing the ESI spectrograph in the Lick Shops.

Images

Construction images

Engineering drawings

Spectrograph Specs and Characteristics (Estimated)

Physical and Optical Characteristics

Imaging Performance

Spectrograph Performance

Schedule

We estimate that at least 5 quarters of work remain to bring DEIMOS to readiness at the telescope. Our present goal is to deliver and commission the instrument by June 1, 2000. This goal is predicated on speedy progress on ESI. On this schedule, which is highly success-oriented, DEIMOS would be available to general observers in late summer or fall of 2000.

Subsystem Status Report (Dated Feb 2, 1999)

To Do List (Dated Feb 11, 1999)

Reports

Meeting Notes

Engineering Preliminary Design Review

Engineering Critical Design Review (Currently without figures. Supplied upon request)

Software PDR

Software CDR

Quarterly Reports

Testing (This data restricted to UCO/Lick users. E-mail jim@ucolick.org with request for access)

Testing queue and results

Request a test

Electronics

Schematics

Stage Data

            "A" side of DEIMOS instrument

KDIR-001A - Instrument Rotation

KDCF-001A - CCD Dewar Focus Stage

KDCX-001A - CCD Dewar Translation Stage

KDTV-001A - Guide TV Focus

KDTV-002A - Guide TV Filter

KDTV-003A - Guide TV Shutter

KDSF-001A - Science Filter Wheel

KDGC-001A - Grating Rotator, Position #1

KDGC-002A - Grating Rotator, Position #2

KDGC-003A - Grating Rotator, Position #3

KDGC-004A - Grating Rotator, Position #4

KDGS-001A - Grating Slide

KDGS-002A - Grating Clamps

KDCS-001A - Dewar Shutter

KDTM-001A - Tent Mirror

KDWN-001A - Entrance Hatch

KDSM-001A - Slit Mask Selection

KDSM-002A - Slit Mask Insertion

KDTR-001A - Instrument Trolley

Lockout Schedule

Stage inter-operation

Sensors

Location of RTD temperature sensors

Sensors on camera

Sensors on instrument body

This page is maintained by Jim Burrous Jim@Lick.UCOLick.org