9/24/05MagE Update SAC meeting Developments with MagE Complete layout of Spectrograph structure and camera by B. Bigelow –Structure will be all anodized aluminum + bolts (like MIKE). –Fabrication drawings exist for grating and prism assemblies, first mechanical pieces are being fabricated in MIT shop. –All optics in hand, or to be delivered next month Have coating quotes from OCLI, ZC&R and hybrid Sol-gel curves from CCI. Have contacted DRC metrigraphics to procure an “electroformed” slitmask. Working through design of mounting CCD on Si0 2 meniscus –CCD repackaging on engineering grade e2V did not deliver same characteristics as before removing wire bonds. Ian has details We’ll go with standard stock packaging for commissioning. (~7% hit in eff.) –Converging on solutions to locate CCD mount on dewar window (Si0 2 ) –Have arrived at initial designs to run cold finger, and electronics while minimizing obscuration in the beam.

9/24/05MagE Update SAC meeting (Old collimator assembly) Calibration lamp system Slitviewing system Layout as of last SAC meeting

9/24/05MagE Update SAC meeting

9/24/05MagE Update SAC meeting Optional handles added to prism cells to aid removal

9/24/05MagE Update SAC meeting Slit viewer in instrument Note reliefs in mounting plate to clear optics and light path

9/24/05MagE Update SAC meeting Electroforming process by DRC, versus standard etching results. Nickel-Cobalt is the standard electroplated metal.

9/24/05MagE Update SAC meeting Front, center, and rear barrel assemblies. New recessed rear cover.

9/24/05MagE Update SAC meeting Latest CCD mount design

9/24/05MagE Update SAC meeting Double Pass Prism

9/24/05MagE Update SAC meeting Single-Pass Prism

9/24/05MagE Update SAC meeting From Brent Gross, Cleveland Crystals

9/24/05MagE Update SAC meeting

9/24/05MagE Update SAC meeting Developments with MagE Optics to be finished (with coatings) by end of ‘05 Cable wrap with Igus chain to be better integrated with Aux port rotator Electronics and control can be PLC driven, with only 110V and ethernet needed into MagE electronics box. Plan to complete spectrograph and send to Carnegie in Summer ‘06 Would be ready to ship to LCO at end of ‘06.