DEep Imaging Multi-Object Spectrograph

First Light Spectra
Current DEIMOS Pictures


DEIMOS Project Group Poster

Shipping Log (slit masks and misc. shipments)

Mechanical and Electronic Documentation

Commissioning Efforts (last updated 6/5/02)

Pictures of DEIMOS commissioning

Shipping News, 6/5/02 - FIRST LIGHT

Read Sandra Faber's report of First Light

Shipping News-historical

DEIMOS Shipping Schedule

Mauna Kea summit weathercam
All-sky CCD camera image of the sky over Mauna Kea
General weather info on Mauna Kea

Additional updates by Drew Phillips

Engineering and Operational Data


Current Schedule
Our present goal is to deliver and commission the instrument in February of 2002. On this schedule, DEIMOS would be available to general observers in June 2002.

Document Directory
Quarterly Reports
Team Meeting Notes
SSC Presentations
Engineering Preliminary Design Review
Engineering Critical Design Review (Currently without figures. Supplied upon request)
Software PDR
Technical Reports
Published Papers
Pre-Ship Review Presentation
Response to the Pre-ship Review Report:
Postscript version 1
PDF version 1
FINAL Postscript version
FINAL PDF version

Pre-Ship Review Documentation

Readiness Review FINAL Powerpoint Presentation -139MB (will take a very long time to download)
DRAFT of Dave's Powerpoint Presentation with NO pictures as HTML generated via Powerpoint

CURRENT IMAGES  (last updated 6/5/02)
TV Guider
Dewar window coating
Construction images
Engineering Drawings

Spectrograph Specs and Characteristics (Estimated)
Physical and Optical Characteristics
Imaging Performance
Spectrograph Performance

Technical Information
Electronics Manual
Assembly Drawings
Maintenance Procedures
Stage Data
Temperature Sensors
Equipment History

Performance Results (Drew)
Test results

Location of RTD temperature sensors
Sensors on camera
Sensors on instrument body

General DEIMOS info

The DEIMOS instrument, designed for the 10 meter Keck-II telescope located atop Mauna Kea in Hawaii, is pivotal to the DEEP project (a survey of very faint galaxies). The Principal Investigator for DEIMOS is Sandra Faber. For more general information on the DEEP project and how it relates to DEIMOS and Keck Observatory, please download the brochure as a PDF file (the images do make this file large, but it's well worth it).

DEIMOS is a general purpose, faint object, multi-slit, double-beam spectrograph. It utilizes slitmasks to allow the spectra from many objects (approx 80 per barrel!) to be imaged onto a mosaic CCD array. Some of the key features are wide spectral coverage (up to 5000 per exposure), high spectral resolution (down to ~1 ), 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. Mask fabrication is a joint project of Drew Phillips, De Clarke and Steve Allen. Data reduction is Drew Phillips' responsibility. De Clarke is working on the GUI. There is a DEIMOS Software 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.

DEIMOS was partially supported by National Science Foundation Facilities and Instrumentation Grant ARI 92-14621. The work of the DEEP Survey is supported by NSF grants AST 95-29098 (UCSC), AST 00-71198 (UCSC), and AST 00-71199 (UCB).

This page is maintained by Deb Culmer,
--Last updated September 9, 2002--