1. DBSP-R Upgrade Progress Review 2011-01-06 The DBSP-R Team 2011-01-06 1 DBSP-R Progress Review

2. Motivation for the Upgrade Much greater QE at reddest wavelengths. Spectral length doubled. Improved ease of use. Additional benefits: Lower noise (<2.5e- @20s read time) 15µm pixels instead of 24µm; low lateral charge diffusion. No fringing. Standardization of electronics and software. Improved LN2 hold time (30+ hours). 2011-01-06DBSP-R Progress Review 2

3. Optics 2011-01-06DBSP-R Progress Review 3

4. Optics (Viswa) Window lens specs as per Epps’ design (originally for flat CCD, like ours). Status: –Flat window (for testing) in hand. –Lens window shipped from HJOL to coating company. Expected next week. 2011-01-06DBSP-R Progress Review 4

5. Mechanical 2011-01-06DBSP-R Progress Review 5

6. Mechanical – Dewar Body Dewar ordered form IR Labs. –Vendor compliance checked. Expected: first week of February. 2011-01-06DBSP-R Progress Review 6

7. Mechanical – Dewar Base (Khanh) Basic design: DONE. Detail drawings in progress. 2011-01-06DBSP-R Progress Review 7

8. Mechanical – Flexure FEA 2011-01-06DBSP-R Progress Review 8 Spacer G-10 CR,.020” thk sheet Aluminum rings Cable feedthrought holes Mass mounting surface : - Detector mask :.4 lb - Cold shield :.3 lb -Detector standoff assy :.6 lb (including detector package) Total deflection of 0.6µm with the mass of 1.3 lbs Total deflection of 5.5µm with the mass of 13 lbs

9. Mechanical – Detector Mount 2011-01-06DBSP-R Progress Review 9 Detector support areas Flexure mount mount pocket Detector mount plate Spring leaf

10. Mechanical – Head Installation Proc 10 Sliding the detector standoff assy over the two guiding shafts for installation from the back of dewar base. Sliding the detector mask over the two guiding shafts for installation from the front of dewar base.

11. Mechanical – Detector Electronics Box Modifications for patch panel: DONE. Mounting assembly: Released for fab. 2011-01-06DBSP-R Progress Review 11

12. Electronics 2011-01-06DBSP-R Progress Review 12

13. Electronics - External Detector Controller + Boards in the lab: in testing. Patch Panel Board: in fabrication. Heater PCB: template from Antarctic camera. Controller Box wiring: Boards to Patch Panel. Hermetic connectors to Patch Panel. Cables: Dewar to Cass Cage Rack. 2011-01-06DBSP-R Progress Review 13

14. Electronics - Internal Fanout PCB: to be designed. Internal wiring: Fanout Board to hermetic connectors. Detector mount temperature control. Dewar body temperature control. 2011-01-06DBSP-R Progress Review 14

15. Computer and Software 2011-01-06DBSP-R Progress Review 15

16. Computer and Software (Jennifer) 2011-01-06 16 DBSP-R Progress Review DBSP RED ArcVIEW Server TCP/IP sockets DBSP RED GUI interface DBSP BLUE GUI interface TCP/IP sockets DBSP BLUE ArcVIEW Server Sync Module Aux Monitor GUI interface TCP/IP sockets Auxiliary Monitor ArcVIEW Server PCI Driver Custom C code PCI Driver Only the communication between the ArcVIEW server and the interface driver (PCI vs. EDT) changes in the new architecture. The new DBSP RED ArcVIEW server is essentially identical to the current DBSP BLUE ArcVIEW server except for detector specific configuration parameters.

17. Computer, OS and Dev Tools 2011-01-06 17 DBSP-R Progress Review The computer used for deploying DBSP-RED will be one of a set of 5 identical computers installed at the observatory to upgrade the instrument computer infrastructure. Systems already delivered, installed and operational A laboratory version of the instruments computers used at the observatory has been built with identical hardware and software to use as a development platform at Caltech. Hardware assembled, cloning completed Replace the current DBSP RED ArcVIEW server with a copy of the DBSP BLUE server and then configure for the new detector. Development code assembled and under version control –Advantages Maintains a consistent software architecture for the DBSP instrument at the observatory. Eliminates the risk inherent in deploying a new solution. Minimizes the time required to develop the software for the instrument.

18. Projected Deployment Sequence 2011-01-06 18 DBSP-R Progress Review Develop with the laboratory computer Deliver the laboratory computer to the observatory. Deploy the DBSP_RED2 code developed at Caltech onto the existing instrument computers as test in tandem with the development computer. Delivery to the observatory should consist of a new version of the ArcVIEW server configured for the new detector that will simply replace the contents of the existing DBSP/RED directory. - Actually create a new DBSP/RED2 instrument

19. Current Computer Hardware/Software Status Development started on the DBSP_RED2 server and GUI. LabVIEW/ArcVIEW project based on DBSP_BLUE created. DBSP_RED2 project checked into SVN repository at the observatory and can be retrieved remotely using any SVN client. LabVIEW/ArcVIEW code now under version control. Development computer for DBSP_RED has been configured and a clone of the new instrument computers operating system and software from the observatory (instrument4-instrument8) has been installed on the system. The hardware is identical to the recently purchased system. This system has been configured as an instrument computer identical to the systems at Palomar Observatory Computer hardware and software ready for development LabVIEW/ArcVIEW Code under Version Control

20. DBSP_RED2 Software Development is primarily creating a new ArcVIEW configuration rather than code development Configuration files identified and the fundamental properties have been edited to support the new project paths. Detector specific configuration entries still need to be determined. Example: Configuration Files with fields requiring changes highlighted Example: List of Configuration Files Requiring Configuration Modifications Identified

21. Management 2011-01-06DBSP-R Progress Review 21

22. Schedule – Lab activities Critical milestones: 2011-01-06DBSP-R Progress Review 22 Fab Integ Test Jan Feb Mar Apr May Tel Dewar body: Feb 4 Dewar base: Feb 20 Fanout PCB: Feb 25 Dewar assembled: Feb 25 Detector warm test: March 4 Detector cold test: March 11 Pre-ship Review: April 25 First Light: May 4 Off-telescope test: April 27

23. Schedule - Commissioning Pre-installation (off-telescope): April 28-30. Cass cage rack modules (Leach power, Lakeshore, connector plate). Cables. Palomar staff support required. Mount dewar and run tests with calibration lamps (some risk for incoming observers…) First commissioning: May 4 or 5. Measure throughput and flexure/tilt with standard stars. Second commissioning (if necessary): July 2 or 3. 2011-01-06DBSP-R Progress Review 23

24. Budget Expenditures through early December 2010: o Materials = $36K (controller, mech fab) o Labor = $142K o Commitments = $25K (dewar, optics, Lakeshore) Budget FY10 = $260K Available = $57K Projected expenditures: –Labor (team) = $130K –Projected Materials (shop fab) = $6K (106 hours) Deficit = $79K 2011-01-06DBSP-R Progress Review 24

25. Budget – Projected Team Load 2011-01-06DBSP-R Progress Review 25 JanFebMarAprMay Khanh B.80%50%20% 10% Ernest C.80% 60%40%10% Rich D.5% Jennifer M.20% 30% 20% Gustavo R.60%80% 20% Roger S.20% Viswa V.5%20%10% Projected Labor Cost = $130K