COS SMOV Morning Update
21 August 2009
This presentation contains material that is embargoed until after the SM4
ERO press conference. Images/spectra of external (astronomical) objects
may not be altered, distributed, reproduced, published, displayed, or used in
any other way without the consent of the STScI Director or the HST Project.
1
Agenda
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•
•
•
Recent Activity
SMOV Program Status
Recent Results and Analysis
Upcoming COS SMOV Timeline
2
Recent Activity
• No Activity Since Monday 17 August (Day 229)
3
COS SMOV Status
Activity
COS02
COS03
COS04
COS05
COS06
COS07
COS08
COS09
COS10
COS10/COS27
COS11
COS12
COS13
COS14
COS15
COS16
COS17
COS18
COS19
COS20
COS21
COS23
COS24
COS25
COS26
COS27
COS28
COS29
COS30
COS31
COS32
COS33
COS34
COS35
COS36
PropID
11353
11354
11355
11466
11467
11355, v5
11468
11469
11470
11496
11471
11472
11473
11474
11475
11476
11477
11478
11479
11480
11481
11356
11482
11483
11484
11485
11486
11487
11488
11489
11490
11491
11492
11493
11494
Title
PI
Visits Done Total Visits
Memory Check
Welty
1
1
Science Data Buffer Check
Welty
14
14
NUV Initial On-Orbit Turn-On
Welty
9
9
NUV Darks
Sahnow
17
20
NUV Functional Test
Sahnow
1
1
NUV Fold Test
Welty
N/A
COS to FGS Alignment
Hartig
6
6
NUV Optics Alignment and Focus Hartig
14
14
NUV Internal Wavelength
Keyes
4
4
Lamp2/GET
Keyes
3
3
NUV Imaging Target Acquisition Soderblom
3
8
NUV Dispersed Light TA
Soderblom
2
4
NUV Imaging Performance
Goodfrooij
1
4
NUV Int/Ext Wavelength Scales Keyes
6
7
NUV Internal Wavelength Verf.
Keyes
4
4
NUV Spectroscopic Performance I Ghavamian
2
3
0
3
NUV Spectroscopic Performance IIGhavamian
NUV Flats
Ake
36
36
NUV Sensitivity
Massa
3
5
NUV Struc. & Thermal Stability
Smith
0
2
NUV High S/N Verification
Sahnow
0
2
FUV Initial On-Orbit Turn-On
Welty
13
13
FUV Darks
Sahnow
16
20
FUV Functional Test
Sahnow
1
1
FUV Optics Alignment and Focus Hartig
6
9
FUV Internal Wavelength Scale Keyes
1
1
FUV Dispersed Light TA
Soderblom
4
5
FUV Int/Ext Wavelength Scales Keyes
3
6
FUV Internal Wavelength Verf.
Keyes
4
6
FUV Spectroscopic Performance I Friedman
0
3
0
2
FUV Spectroscopic Performance II Ghavamian
FUV Ext Flats
Sahnow
0
2
FUV Sensitivity
Keyes
3
7
FUV Struc. & Thermal Stability
Smith
0
1
FUV High S/N Verification
Sahnow
0
2
177
228
Status
Done
Done
Done
Analysis
Done
Done
Done
Done
Done
Done
Analysis
Analysis
Analysis
Analysis
Analysis
Analysis
Analysis
Analysis
Done
Analysis
Done
Waiting for more data
Analysis
Analysis
Analysis
Analysis
Analysis
Analysis
78%
4
Continuing FUV Focus Analysis
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•
•
•
Modeling conducted to simulate the upcoming focus run using STIS
spectrum and raytraced PSFs
Initial focus sweep spectra continue to be analyzed for other trends
than FWHM of isolated absorption lines
Analysis of wavecal line widths on FUV detector indicate the the FUV
detector is performing as expected, achieving FWHM of about 5
pixels (30µm) over the bulk of the active area (better in the middle
than toward the edges), in agreement with testing performed at
Berkeley
The initial FUV focus adjustment resulted in an improvement of the
wavecal system line widths on the FUV detector. The wavecal system
has no aberration, and is off-axis relative to the PSA. As a result, the
wavecal focus is not a good metric of PSA spectral focus.
5
FUV Sensitivity (11492)
Preliminary Analysis Results
• Data for visits 71 and 12, using primary standard
LDS749B have allowed us to derive (preliminary)
independent PSA sensitivity curves for each grating and
segment
– Visit 11 (G130M, G140L) upcoming
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NUV Imaging Performance Verification (11473)
Preliminary Analysis Results
• Data from visit 1 using G standard star P330E
• Preliminary result: brightest central pixel of 40-pixel (~1
arcsec) diameter measurement aperture contains 14.6 +/0.6% of light
7
Additional SMOV Visits Approved
• Added two new internal visits to program 11488 (Final
FUV Internal Wavecals / Internal Flat Fields)
– Visit 04: obtain template spectrum at new encoder position for
G130M 1291 FP-POS=4
– Visit LV: obtain internal flat field exposures at new, lower
HVNOM settings (identical to previous visit FF at original
HVNOM levels)
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Upcoming COS SMOV Timeline
• NUV Spectroscopic Sensitivity
– 11479 04 233:15:41 – 233:22:43
• FUV Spectroscopic Sensitivity
– 11492 11 234:04:29 – 234:13:19
• FUV Target Acquisition Algorithm Verification
– 11486 04 234:14:18 – 234:17:31
• FUV Detector Engineering Operations; Reset HVMAX
– 11356S1 236:01:00:00 - 236:02:21:52
• FUV Optical Alignment; M mode Focus Sweeps
– 1148493 236:16:33:16 - 236:21:25:33
– 1148494 236:23:08:04 - 237:04:09:07
– 1148495 237:05:04:42 - 237:11:59:14
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