CASB Report February 2002

 

Highlights for Division Meeting

·         Achieved a high production rate this month for GSC2 processing of both the northern and southern infrared plates scans; over half are now processed.

·         Began database loading of infrared plates.

 

Community Affairs and Communications

·          

 

Project Management and Technical Infrastructure

·         Volpicelli continued comparison of Objectivity and MS SQLserver for GALEX/GSC-II.

·         McLean and Greene continued supporting SDSS planning activities.

·         Hiring of replacement software developer in progress (offer made)

 

MISSION SUPPORT

HST Operations

·         Reviewed 13 new Guide Star Problem Reports (GSPRs) this period.  Eleven of these were fine lock or reacquisition failures.  One of the other GSPRs documented a GS that was fainter than expected. The remaining GS was a misclassified galaxy.  Filed a Bad GS Alert for each of the GSs.

·         Supported investigation of bright object protection for a STIS MAMMA imaging program in the extremely complex sky region of the SN1987A llght echo.

·         To save disk space and with concurrence from the Science Planning and Scheduling Team, deleted all remaining confirmation charts for the still-active Cycle 9 SNAPs.

·         Continued the port of GetImage to the Windows NT server. 

·         Continued to obtain statistics of webserver visits, specifically, accessing of GSC2.

·         Occasionally answering questions from the APT team about the Bright Object Tool.

·         Analyzing responses to the draft HUGS2 report.

 

NGST Development Studies

·         Reviewing draft CSA FGS concept design

 

                                      DIGITIZED SKY SURVEY

 

Plate Scanning

·         Completed scanning UKST-IR plates from the current ROE shipment.

·         Scanned the last two available POSSII-N plates from Palomar.

·         Resumed scanning the POSS-I O survey on GAMMA1.

 

GAMMA Microdensitometer Systems

·         GAMMA2 is still down; performed no production scans on GAMMA2 throughout the period.

 

Data Compression/CD Production

·         Completed the CD-ROM containing the compressed scans of the last four available POSS-II-N plates.

·         Completed migration of all available POSSII-N XDSS CDROMs to the RaidTec NFS raidarray.

·         A total of 993 CDROMs with 645GB of compressed files has been transferred.

·         Started migration of the UKST-IR XDSS CDROMs.

·         Worked on two archive help desk requests for help/information.

·         Continued low-level rationalization of MOD archive.

 

 

GSC-II

 

Plate Processing and COMPASS Database

 

·         Heavily concentrated resources on processing the infrared plate scans in both the north and south.  Achieved a high production rate this month; over half of these plates are now processed.

·         Rebuilt the LoadOOP database task.  Updated the load and match daemon script to reflect the changes from the COMPASS upgrade.  Started the load and match process and began ingest of infrared plates in both database loading and matching. Performed some minimal QA to ensure proper loading of these plates into COMPASS.

·         Installed the CIQA tools on COMPASS for GSC2 QA.

·         Investigated problems with GSC2 and CASB web services.  Blocked an IP address that was accessing our web site and creating errors. The errors generated from this request overloaded our server and denied access to others. 

·         The IP address that was blocked originated from an anonymous Internet access provider.  It is only a guess, but this incident appears to be another case of someone trying to download the entire unreleased GSC2.2.1 catalog.

 

CALIBRATIONS: Astrometry

 
CALIBRATIONS: Classification

·         Obtained pre-release version of the Millennium Galaxy Catalog (Liske et al 2002). This catalog contains nearly 9000 hand-classified galaxies in the magnitude range 16 < B < 20, over an area near the north galactic pole that covers several GSC2 plates. This will be a terrific resource for analysis of the GSC2 classification at the faint end. A first look at the data matched to the uncut GSC2.2.1 indicates ~95% accuracy for MGC galaxies at B=18 and fainter.

·         Analysis of a strip of 10 GSC2 HTM regions from |b|=90 to |b|=0 indicates that ~90% of stars have unanimous classifications down to |b|=30. Although the percentage falls as we approach the plane, the population rises even faster, so that the absolute number of unanimous stars is even higher in the plane than out of it. We found from the SDSS comparison (presented at the AAS last month) that unanimous classifications are extremely reliable in the comparison magnitude range (15.5 < F < 18.5). Thus, this finding that most stars in the catalog appear to have unanimous classifications is significant in terms of the functional use of the GSC2 to provide reliably classified guide stars. See                http://www-gsss.stsci.edu/gsc/gsc2/calibrations/comparisons/calibrations_comparisons.htm.

 

 

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

 

·         (Garcia Yus, CTIO.) Completed reduction of photometry from the latest CTIO run (December).  The data include 76 new and/or reobserved sequences: 72 southern and 4 POSS-II fields.  Additionally observed five fields with longer exposure times. Now the data need to be ingested into the pipeline catalog.

 

GSC-II Science

·          


 

Appendix – CASB Statistical Summary

 

 

 

GSC-II RETRIEVALS for last 3 months

 

Dec 2001:                     169721 
Jan 2002:                     444834 
Feb 2002:                     290727 

 

 

 

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

2

882

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

846

16

862

96

         S6

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

418

10

428

46

 

3

Rescans

 

35

0

35

 

 

 

 

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

868

4

872

97

 

3

AAO SES

606

606

0

606

100

 

1

PPARC ER

288

288

0

288

100

 

1

AAO-SR

118

118

0

118

100

 

3

UKST-IR

894

767

17

784

88

 

3

POSS-I O

936

101

0

101

11

 

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

900

0

900

100

 

3

POSS-II N

897

871

4

875

98

 

           4

AAO-SES

606

613

0

613

100

 

3

PPARC-ER

288

288

0

288

100

 

3

AAO-SR

109

116

0

116

100

 

4

UKST-IR

894

742

45

787

88

 

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-I O

936

120

0

120

13

 

5

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

611

176

78

254

42

 

3

POSS-II J

897

897

0

897

100

 

1

POSS-II F

897

897

0

897

100

 

1

POSS-II N

897

381

123

         504

56

 

4

SERC-J/EJ 

     894

829

0

829

93

 

1

South-F

894

894

0

894

100

 

1

UKST-IR

894

278

128

406

45

 

4

South-SR

116

116

0

116

100

 

2

South-QV

94

94

0

94

100

 

2

POSS-I O

936

17

0

17

2

 

5

 

 

GSC-II COMPASS DATABASE LOAD (no.objects = 998,402,801)

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

14

41

5

 

4

SERC-J

894

709

0

709

79

 

1

South-F

894

742

0

742

83

 

1

UKST-IR

894

2

72

74

8

 

4

South-SR

116

116

0

116

100

 

2

South-QV

94

90

0

90

96

 

2

 


GSPC-II OBSERVATIONS

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-I

584

603

0

603

100

P1

1

POSS-II

314

282

0

282

90

 

1

SERC

894

1017

0

1017

100

 

1

 

GSPC-II REDUCTIONS

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-I

584

603

0

603

100

P1

1

POSS-II

314

282

0

282

90

 

1

SERC

894

1017

0

1017

100

 

1