1 / 10

MagIC Upgrade for High-Speed Photometry

MagIC Upgrade for High-Speed Photometry. Jim Elliot, MIT Magellan SAC 2007-05-20. MagIC SUMMARY. CCD filter photometer for Baade (moved to Clay) Detector s 2k x 2k SITe (24 µm pixels; 2.3 x 2.3 arcmin field) 2k x 4k Lincoln Lab red and blue (13 µm pixels; 1.2 x 1.2 arcmin field) Modes

floria
Download Presentation

MagIC Upgrade for High-Speed Photometry

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. MagIC Upgrade forHigh-Speed Photometry Jim Elliot, MIT Magellan SAC 2007-05-20

  2. MagIC SUMMARY • CCD filter photometer for Baade (moved to Clay) • Detectors • 2k x 2k SITe (24 µm pixels; 2.3 x 2.3 arcmin field) • 2k x 4k Lincoln Lab red and blue (13 µm pixels; 1.2 x 1.2 arcmin field) • Modes • Full frame, dual, and quad readout (~23 sec) • Pixel binning • High-speed (with frame transfer) • 16 filter positions • Instantly accessible • always in standby mode on a folded port • accessible by rotation of tertiary mirror (within a few minutes) • Built by MIT and CfA (installed on Baade, March 2001) • Supported by NSF (MRI), gift to Harvard from Sackler, MIT internal funds • Science programs • Narrow field imaging: gravitational lenses, compact objects, gamma-ray bursts, etc. • High-speed imaging: stellar occultations, compact objects , planetary transits

  3. WHY UPGRADE MagIC? • MagIC original design included two frame transfer CCDs • Foundry run failed ($38K lost) • POETS (Portable Occultation, Eclipse, and Transit System) • Six systems built by MIT and Williams College (spring 2005) • On Clay in July 2005, June 2006, and June 2007 • Planetary transits, stellar occultations, and speckle imaging • How to have permanent high-speed capability on Magellan? • 1. Guiders • 2. POETS piggy back on MagIC • 3. Frame transfer CCD in MagIC dewar (according to original plan) Solution: #3 Clone the hardware and software for HIPO, Ted Dunham's SOFIA instrument

  4. PERSONNEL • Key Players • Jim Elliot (P.I.) • Steve Kissel (CCD wiring and testing) • Folkers Rojas (mechanical work) • Grad student (software) • Auxiliary Players • Kenton Phillips (computer) • Brian Taylor (BU; software consultant for LOIS) • Bill Mayer (MKI oversight) • Ed Boughan, Mark Bautz (consultants)

  5. guider telescope spacer rotator camera filter wheel MAGIC MODULES

  6. FILTER WHEEL (CfA) • Based on MEGACAM design • Filter format : 4" square • 18 positions => 16 filters • Filters: • Johnson-Cousins, B,V,R,I • Sloan: u', g', r', i', z' • VR • 6 visitor filters

  7. MagIC FOCAL PLANE unvignetted region Frame transfer region masked CCD #2 CCD #1 Frame transfer region masked CCD #3 #1: SITe CCD: 4 readouts, each 50 Kpix/sec => ~25 seconds #2: CCD47-20: 2 readout, each up to 400 Kpix/sec (up to 50 Hz) #3: open (for possible CCD in the future)

  8. 100 Quantum Efficiency (%) 50 0 400 600 800 1000 Wavelength (nm) QUANTUM EFFICIENCY MagIC CCDs e2v CCD47-20 SiTe MagIC Upgrade 75 25

  9. Cooling control Sun Computer #1 LOIS #1 Electronics #1 SITe Shutter Filter Wheel Electronics #2 PC-104 Sun Computer #2 LOIS #2 e2v Dewar (cooled by CryoTiger) SCHEMATIC DIAGRAM

  10. SCHEDULE • Completed • In hand: CCDs, Leach electronics, control computer (Sun), dewar shell • Design for dewar modifications • In progress • Software installation • CCD wiring and testing • June 2007: Ship MagIC dewar, electronics, and computer from LCO to MIT • July 2007: • Modify dewar to hold two CCDs • Install the CCDs • Test • August 1, 2007: • Ship MagIC parts to Chile • August 15, 2007: • Reassemble MagIC and test at LCO • August 24 (or 28) • Engineering run

More Related