CASB Report February, 2001

 

Highlights for Division Meeting

·         Completed compressing the Equatorial Red (PPARC-ER) plates scans, the final DSS-II red images that needed to be compressed.  We now have all sky-coverage in both the red and blue bandpasses.

 

Community Affairs and Communications

·         Supported two tours of CASB.

 

Project Management and Technical Infrastructure

·         McLean and Greene continued supporting SDSS planning activities.

 

MISSION SUPPORT

HST Operations

·         Reviewed one Guide Star Problem Report (GSPR) this period. This case was a search failure because the GS was a misclassified galaxy.  Filed a Bad GS Alert.

·         Released the Bright Object Tool in the VTT.  This was in a special release of the VTT only for PI's who are doing STIS MAMA imaging.  Until GSC-II is ready for release we will only be supporting STIS MAMA imaging. 

·         Now working on a version for the Instrument Scientists to perform bright object checking on Phase II proposals that come in for Cycle 10.  The release date for that is currently March 22nd.  Work for this release is going well.

 

NGST Development Studies

·         Morrison is participating in the NGST proposal writing.

 

DIGITIZED SKY SURVEY

Plate Scanning

·         Completed scanning the current shipment of UKST-IR plates.

·         Resumed scanning POSS-I O plates.

·         Sent a shipment of 60 POSS-II N plates to ESO for copying.

·         Returned the current shipment of UKST-IR plates to ROE.

 

GAMMA Microdensitometer Systems

·         Both scanning machines are performing within specifications, but both are showing some signs that they may require maintenance in the near term.

 

Data Compression/CD Production

·         Completed compressing the Equatorial Red (PPARC-ER) plates scans, the final DSS-II red images that needed to be compressed.  We now have all sky-coverage in the red.

·         Continued compressing scans of the POSSII-N and UKST-IR surveys.

 

Archive Maintenance

·         Waiting for new larger hard disks to be included in the raid arrays to help mitigate database storage needs, while allowing for the full migration of the the DSS to Chart.

·         Remastered 10 CDROMs from the DSS for the National Astronomical Observatory of Japan.

 

Software Development

·         No progress reported in investigation of a GETIMAGE failure with the DSS-I, first reported by the NAOJ Astronomical Data Analysis Center.

 

GSC-II

 

Plate Processing and COMPASS Database

·         In a very productive month, ran 228 plates (from both hemispheres) through the plate matching routine.  Many of these required database loading as well, and a number represented problem plates encountered in attempting to complete the northern hemisphere.

·         After completion of the load and match on the POSSII J and F plates, 19 remained unmatched.  Identified and fixed problems with most of these. The fix required deleting and re-loading all the plates in the level 6 HTM region associated with the problem plate as well as deleting some individual corrupted objects.  As a consequence a number of good plates as well as the problem plates needed to be deleted, reloaded, and rematched. Six plates remain unmatched in the north.

·         Still investigating the exact failure mechanism, but it is probably related to the extreme number of detections in these fields.  They represent the six most crowded regions in the north.   An attempt to reprocess one of these fields using a higher detection threshold was unsuccessful.  A call has also been placed to Objectivity regarding the possibility that we have encountered some sort of hard limit to storage in these failing regions.

·         Several database regions in the south required restoring from the last backup when matching tasks revealed they were missing.  Why the regions were missing is unclear, but dates point to the Objectivity administrative task of database file compression Ootidy.

·         The files were restored and production has been running very smoothly in the south; fewer than 50 plates are required to complete loading.

 

CALIBRATIONS: General

·         Plates with incorrect plate centers were corrected in both the production database and the test database. The CIQA procedure that discovered the problem now indicates the plate centers are correct on these plates.

·         Continuing to run CIQA on plates in the test database.

·         Began summary analyses of CIQA results for all plates run so far. Overlapping plate residuals in position and magnitude were studied for same-color pairs. Outlier values are quite high in some cases, but this is understandable since the test database contains our worst calibration cases. No systematic differences were observed between northern and southern hemisphere surveys.

·         Developed an interactive utility to translate survey field to plate id, and vice versa, using the PSI database, to facilitate working with the database. A batch mode for the utility is also underway.

 

CALIBRATIONS: Astrometry

·         Conducting a study determining the accuracy of the GSC-2.1 positions, using external catalogs (SPM,NMP, and 2MASS)

 

CALIBRATIONS: Classification

·         Began experimenting with the use of the training set as a tool for visualization during the tree building process, and feedback during the tree application process.

 

CALIBRATIONS: Photometry (GSPC-II and DSS-I and -II)

 

GSC-II Science 

 


 

Appendix – CASB Statistical Summary

 

SCANNING                                                                                                                                                                         

Survey

Goal

Previous Month

Current Month

Current Total

%

done

Notes

Priority

POSS-II J

897

902

0

902

   100 

         S4

1

POSS-II F

897

910

0

910

100

         S4

1

POSS-II N

897

880

0

880

98

         S4

1

AAO-SES

606

614

0

614

100

         S4

1

PPARC-ER

288

288

0

288

100

 

1

AAO-SR

118

118

0

118

100

S2

-

UKST-SR

112

50

0

50

45

S5

3

UKST-IR

894

611

41

652

73

 

2

SERC-J/EJ

447

443

0

443

99

      S1

           2

POSS-I E

106

106

0

106

     100

         S3

           3

POSS-I O

936

190

29

219

23

 

3

Rescans

 

33

0

33

 

 

 

 

COMPRESSION

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-II J

897

895

0

897

100

 

           2

POSS-II F

897

897

0

897

100

 

1

POSS-II N

897

474

40

514

57

 

3

AAO SES

606

606

0

606

100

 

1

PPARC ER

288

270

18

288

100

 

1

UKST-IR

894

424

79

503

56

 

3

 


 

 

 

MO DISK ARCHIVING

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-II J

897

902

0

902

100

 

4

POSS-II F

897

878

0

878

98

 

3

POSS-II N

897

432

137

569

48

 

           4

AAO-SES

606

613

0

613

100

 

3

PPARC-ER

288

250

0

250

87

 

3

AAO-SR

109

73

0

73

67

 

4

UKST-IR

894

592

20

612

68

 

5

SERC-J/EJ

894

892

0

892

100

 

 

SERC-J/REPAIR

48

48

0

48

100

 

 

SERC-J/15mu

449

449

0

449

100

 

5

POSS-I E

933

928

0

928

99

 

2

POSS-I REPAIR

198

198

0

198

100

 

2

POSS-QV

613

613

0

613

100

 

-

SERC-QV

94

94

0

94

100

 

-

GPO/BB

88

88

0

88

100

 

-

 

GSC-II PLATE PROCESSING

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-I E

936

931

0

931

99

 

3

POSS-QV

613

2

0

2

0

 

3

POSS-II J

897

897

0

897

100

 

1

POSS-II F

897

897

0

897

100

 

1

POSS-II N

897

44

0

44

5

 

4

SERC-J/EJ 

     894

829

0

829

93

 

1

South-F

894

855

16

855

96

 

1

UKST-IR

894

2

0

2

0

 

4

South-SR

118

110

0

110

93

 

2

South-QV

94

94

0

94

100

 

2

 

 

GSC-II COMPASS DATABASE LOAD

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-I E

936

23

0

23

2

 

3

POSS-QV

613

2

0

2

0

 

3

POSS-II J

897

897

0

897

100

 

1

POSS-II F

897

899

0

899

100

 

1

POSS-II N

897

27

0

27

3

 

4

SERC-J

894

606

77

683

76

 

1

South-F

894

670

57

727

81

 

1

UKST-IR

894

2

0

2

0

 

4

South-SR

115

38

73

111

97

 

2

South-QV

94

77

0

77

82

 

2

 


 

 

 

 

GSC-II Dataset for V2.1.n delivery (1791 Fields, 3438 plates)   (P1)

Item

Count

% done

Notes

Plates available

3417

99

 

Plates processed

3355

98

 

DB Load

3392

99

 

Fields, minus the 72 southern equatorial fields, with 1644 plates.

 

GSPC-II OBSERVATIONS

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-I

584

559

0

559

96

P1

1

POSS-II

314

169

0

169

54

 

1

SERC

894

868

0

868

97

 

1

 

GSPC-II REDUCTIONS

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-I

584

559

0

559

99

P1

1

POSS-II

314

169

0

169

54

 

1

SERC

894

868

0

868

97

 

1