slide1 n.
Download
Skip this Video
Loading SlideShow in 5 Seconds..
The Near Infrared Coronagraphic Imager: NICI Update PowerPoint Presentation
Download Presentation
The Near Infrared Coronagraphic Imager: NICI Update

Loading in 2 Seconds...

  share
play fullscreen
1 / 15
apollo

The Near Infrared Coronagraphic Imager: NICI Update - PowerPoint PPT Presentation

118 Views
Download Presentation
The Near Infrared Coronagraphic Imager: NICI Update
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. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server.

- - - - - - - - - - - - - - - - - - - - - - - - - - - E N D - - - - - - - - - - - - - - - - - - - - - - - - - - -
Presentation Transcript

  1. The Near Infrared Coronagraphic Imager: NICI Update

  2. Stop me if you’ve heard this one….. Insensitivity to Aft optics comes only from occulting mask.

  3. NICI-APD’s

  4. NICI Occulting Masks

  5. NICI Lenslet Array

  6. Performance – Background Removal Raw Difference Avg. Profile Out Scaled Difference rms ~ 10% rms ~ 10% rms ~ 2% All images are (A-B)/A - Plotted Range is +/- 0.5

  7. Performance – Background Removal After Coronagraph and Channel Difference Contrast Ratio to PSF Peak is ~16.7 mag @ 1.0 asec and 18.5 mag @ 1.5 asec

  8. NICI Performance

  9. NICI Performance