1 / 7

LSST Camera Filter Status

LSST Camera Filter Status. SDSS Band-pass Transition Half Maximum Transmission Wavelength (nm) g r i z Blue side 402 552 693 840 Red side 548 693 851 - LSST Band-pass Transition

aizza
Télécharger la présentation

LSST Camera Filter Status

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. LSST Camera Filter Status

  2. SDSS Band-pass Transition Half Maximum Transmission Wavelength (nm) g r i z Blue side 402 552 693 840 Red side 548 693 851 - LSST Band-pass Transition Half Maximum Transmission Wavelength (nm) u g r i z y1 y2 y3 Blue side 330400 552 691 818 960 970 970 Red side 400 552 691 818 922 1030 1020 1050 G-Balmer break @400. OI line@ 557 R-matches SDSS I-red side short of sky emission @826 Z-red side stop before H2O bands Y–options detailed

  3. LSST Ideal Filters 100.0 80.0 60.0 Transmission u g r i z Y 40.0 20.0 0.0 300 400 500 600 700 800 900 1000 1100 1200 Wavelength (nm) Optical Design: Filter Reference Design • Filter band-pass characteristics are defined based on a combination of scientific considerations • 75 cm dia. • Curved surface • Filter is concentric about the chief ray so that all portions of the filter see the same angle of incidence range, 14.2º to 23.6º Uniform deposition required at 1% level over entire filter

  4. LSST Filter Set

  5. Filter prototype RFP going out to vendors • Discussions initiated with multiple vendors • JDS Uniphase • Infinite Optics • SAGEM • Barr • Goodrich • Asahi Spectra • Substantial industrial base exists to coat large, thin filters • Industry estimates of cost and schedule to coat these large, thin optics have been used as input for LSST camera optics schedule and budget • These estimates include a risk reduction study during the R&D phase 300cm coating chamber NOVA Laser Fusion Optics

  6. Leak Update Orig Design Updated Design

  7. Y-Band Options (Y2, Y3 and Y4)

More Related