Sssc sitr forcast
Download
1 / 16

SSSC/SITR: FORCAST - PowerPoint PPT Presentation


  • 93 Views
  • Uploaded on

SSSC/SITR: FORCAST. September 29, 2009 Cornell University. Adams/Herter. FORCAST Description. Facility Instrument Dual-Channel 256x256 Camera w/ Si BIB arrays 5-25  m with Si:As array 25-38  m with Si:Sb array 0.75 arcsec/pixel giving a 3.2  3.2 arcmin FOV

loader
I am the owner, or an agent authorized to act on behalf of the owner, of the copyrighted work described.
capcha
Download Presentation

PowerPoint Slideshow about ' SSSC/SITR: FORCAST' - joey


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
Sssc sitr forcast

SSSC/SITR: FORCAST

September 29, 2009

Cornell University

Adams/Herter


Forcast description
FORCAST Description

  • Facility Instrument

  • Dual-Channel 256x256 Camera w/ Si BIB arrays

    • 5-25 m with Si:As array

    • 25-38 m with Si:Sb array

  • 0.75 arcsec/pixel giving a 3.23.2 arcmin FOV

  • Selectable Filters in 5-38 m range

FORCAST Trimester Review


Cryostat

window

Fold

mirrors

Camera 1

Camera 2

SOFIA

Focal plane

25 mm

Collimator

mirror

FPA

FORCAST Optical Raytrace

Lyot stop (pupil)

f/20

f/5.5

FORCAST Trimester Review


Forcast sofia early science goals
FORCAST/SOFIA Early Science Goals

  • Perform demonstrative science observations

  • Emphasize unique capabilities of SOFIA/FORCAST

    • Observations at 30 – 40 µm

    • High spatial resolution in the mid-IR (2″ - 4″)

  • Build collaborations between the science instrument team and external investigators

  • Bridge SOFIA observations with Spitzer observations

    • Follow-up of regions that are too bright for Spitzer

    • Follow-up of Spitzer objects with higher spatial resolution

  • Selected Early Short Science Objects

    • Winter/Spring: Orion

    • Summer: Galactic Center, M17

FORCAST Trimester Review


Early science filter configuration
Early Science Filter Configuration

FORCAST Trimester Review


Early science timeline

J

F

M

A

M

J

J

A

S

O

N

D

J

F

M

A

M

J

J

A

S

O

N

D

Early Science Timeline

2008

2009

2010

  • 10/16/08 Preship Review

  • 12/09 Ship to DAOF; Post-ship checkout

  • 1/10 Ground installation

  • 2/1/10 Lineops #1

  • 3/4/10 First Light Flight

  • 7/6/10 Short Science Flights (also includes facility checkout)

  • 12/7/10 Start Basic Science Flights

J

F

M

A

M

J

J

A

S

O

N

D

Ship to DAOF

Basic science flights

Preship Review

Short science flights

Ground integration

First light flight

FORCAST Trimester Review


Detailed timeline personnel loading
Detailed Timeline & Personnel Loading

FORCAST Trimester Review


Line ops plan
Line Ops Plan

FORCAST Trimester Review



FORCAST Calibration Box Design

  • KRS-5 Lens images a black hot source onto the FORCAST Lyot stop

  • Chopper blade provides a background source

Illumination at the detector

Layout in front of FORCAST

FORCAST Preship Review



Lakeshore mesh filter image quality
Lakeshore Mesh Filter Image Quality

Grid of 200 µm diam. Pinholes @ field stop (77 K)

24.4 µm

33.4 µm

38.0 µm

  • Results are consistent with diffraction-limited performance

FORCAST Trimester Review


Dichroic performance
Dichroic Performance

Barr 2 has better reflective performance

FORCAST Trimester Review


Array optimization
Array Optimization

  • Sb-083, 30.6 µm + ND2, Low Cap

  • Detectors are optimized for best S/N vs.:

    • Detector bias

    • Well size

    • Frame time

  • Determine trade-off between signal vs. dark current, hot pixels

FORCAST Trimester Review


Budget status
Budget Status

  • FY10 budget

    • Carry over of travel funds from previous year

    • Delays will require an additional ~ $100k of support above current allocation

  • No future funding for larger format Si:As detector

FORCAST Trimester Review


Are we ready yes we are
Are We Ready? Yes we are!!

  • FORCAST is working

    • Mechanisms and software appear very robust

  • Technical things to do yet (no show stoppers)

    • End-to-end testing of Calibration Box

    • Testing of IMC (shift-and-add)

    • Implement acquisition scripts for lineops flight scenarios

    • Implement digital detector bias control

  • Schedule risks

    • None

  • Early science planning underway for range of possible flight dates, e.g. Orion or Galactic Center emphasis

    • GC plan requires tweaking per new (June 2010) schedule for ESS

    • Line Ops will test different observing strategies (C2N, Scanning, etc.)

FORCAST Trimester Review


ad