Author: Tami Blackwell

Image of the M2 globular cluster taken by the ProtoDESI guide sensor (GFA) through the Mayall telescope

Finished Control Room Annex on Mayall U-floor

Production Blue Grating from Kaiser Optical


3-D Galaxy-mapping Project Enters Construction Phase – (CD-3)

This latest DOE approval step, known as Critical Decision 3, triggers spending for major components of the project, including the remainder of the 5,000 finger-width, 10-inch-long cylindrical robots that will precisely point the fiber-optic cables to gather the light from

DOE approves Critical Decision 2 for DESI

The U.S. Department of Energy has announced its approval of Critical Decision 2 (CD–2), authorizing the project’s scientific scope, schedule, and funding profile. (Berkeley Lab News Center, September 21, 2015)

Largest Corrector Lens C1

To the left is a photograph of our largest corrector lens, C1, measuring 1.15m in diameter.  The homogeneity of the fused silca glass came in at an astounding 1ppm (exceeding our 3ppm spec.).  C1 and C4 are about to be

C2 and C3 glass blanks finished

Ohara Corp in Japan has informed us that they have finished manufacturing the C2 and C3 blanks and are finalizing them for shipment.  Arizona Optical Systems (AOS) has been awarded the glass polishing contract for these two lenses and their

DESI awarded $1.1M from the Heising-Simons Foundation

We are pleased to announce that the Heising-Simons foundation has awarded $1.15M to the DESI Project.  The purpose of the award will be to fabricate the long-lead optics of the corrector (C1 and C4).  We expect to receive the funds

DESI’s Concept and Budget Range Approved

9-11 September 2014:  “Last week, the Dark Energy Spectroscopic Instrument project, DESI, passed a critical early review known as CD-1.  For the review, the Department of Energy’s Office of Project Assessment brought in a panel of 14 experts to review

Natalie Roe Testifies Before Congress on Particle Physics’ Future

10 June 2014:  “On June 10th in Washington D.C. Natalie Roe, Director of the Physics Division at Berkeley Lab, testified at a congressional subcommittee hearing on the future of particle physics, prompted by the recent release of the Particle Physics


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