CASB Report November, 2001

 

Highlights for Division Meeting

·         Restored GAMMA2 scanning machine to production scanning.

·         Started processing POSS Quick V plates.

 

Community Affairs and Communications

·         Web access to the GSC2 public release has continued to be heavy.

 

Project Management and Technical Infrastructure

·         Updated GSC-II project plan in response to staff departures and delay in survey completion by AAO

·         Antonio Volpicelli, whose primary function at STScI is GALAX support, also plans to install CIQA on COMPASS.

·         McLean and Greene continued supporting SDSS planning activities.

 

MISSION SUPPORT

HST Operations

·         Reviewed 7 new Guide Star Problem Reports (GSPRs) this period.  All of these were fine lock failures.  Filed a Bad GS Alert for each of the GSs.

·         Continued planning to port the GetImage software to the Windows NT server.

·         HUGS2 working group preparing draft to circulate to a wider distribution for comments.

 

NGST Development Studies

·         Continued to evaluate CSA guide star availability estimates.

 

                                      DIGITIZED SKY SURVEY

 

Plate Scanning

·         Received a shipment of UKST-IR and UKST–SR plates from ROE.

·         Continued scanning POSSI-O plates until the new ROE shipment was available.

 

GAMMA Microdensitometer Systems

·         Restored GAMMA2 to production scanning. GAMM2 had been down since the end of March with several problems including unstable table motion and corrupted data. Events leading to this restoration follow:

·         Greene, Laidler, Loomis, Ray, and Sturch met November 9 to try to resolve the GAMMA2 problems.  They decided to replace the 1/n card in the servo box with a spare, but the spare was incompatible, resulting in a failed test scan   The old 1/n card was returned and they attempted a test scan that also failed. They rebooted the CAMAC and tested the ppg and fifo directly using IDL.  Both components seemed to be working and another scan was attempted resulting in a new symptom: the data values were saturated.

·         On November 13, Loomis was able to verify that the photometric components of the system were working.   After he rebooted several pieces of equipment he was able to get back to the original conditions of the previous week.  After a couple of test scans he was very surprised to find that one of the multi-channel scans actually had the image data assembled in the correct order.  The shutter mechanism was not working properly and he had to reboot the servos as well as the power to the console, but eventually he started a scan that ran to completion with acceptable data.

·         Since mid-November GAMMA2 has produced over 20 acceptable production scans.

·         Experiencing disk problems with PIXEL2, which controls GAMMA2.  So far the problems have not impacted scanning.  The available space for scans has been reduced and extra effort is needed to insure seamless scan production.

·         Took GAMMA1 out of service to perform preventative maintenance.  Mechanical work is in progress and should be completed in a day or two barring any unforeseen problems.

 

 

Data Compression/CD Production

·         Continued compressing scans of the POSSII-N and the POSSI-O surveys.

 

Archive Maintenance

·         CSID replaced the PC workstation NYARA with a UNIX Sparc station and mounted the one working CDROM jukebox on this machine. NFS mounted the CASB RAID TEC device to NYARA as well. Wrote and tested a new UNIX script utilizing the TAR command.

·         The compressed data of the DSS1, DQVS and XDSS is again being copied or verified.

·         Worked on one archive help desk request for help/information.

·         Continued low-level rationalization of MOD archive.

 

 

GSC-II

 

Plate Processing and COMPASS Database

·         Started processing POSS Quick V plates. Analyzed the processing results of the first 20 plates and adopted minor modifications to the processing script for this survey.  Subsequently reprocessed these plates.

·         Construction of an astrometric mask from the POSS Quick V plate solution residuals is in progress.

 

CALIBRATIONS: General

·         Tested photometric zero points variations and completeness of GSC 2.2.01 with respect to SDSS data.

·         A complete check concerning the homogeneity of the GSC2 objects deduced by field of sky of 10x10 degrees of the GSC2.2 release is in progress. Preliminary results have been shown in the recent GSC2 meeting held in Barolo and OATo last October.

 

 

CALIBRATIONS: Astrometry

 
CALIBRATIONS: Classification

 

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

·         J. Garcia finished reducing CTIO Run 23 (from July) including four nights of photometric quality. Added or replaced 48 GSPC-II fields.  Also received more data from La Palma observations.

·         Garcia starting a CTIO 0.9 m observing run December 2.

 

GSC-II Science

 

·         Halo white dwarf project. - We had a TNG run in November 17-18 but we had bad weather and we only got one spectra - however, it is a new WD with a very short Halpha line!!  This is a confirmation that the sample was very good and we hope to get more spectra during the APO run in December.  The Cdwarf letter is nearly completed and we expect to submit it in the middle of December.

 

 

 

                                         

 

 

 

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

796

0

796

89

         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

374

43

417

45

 

3

Rescans

 

34

1

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

764

40

804

90

 

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

697

17

714

80

 

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

833

0

833

93

 

           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

697

31

728

81

 

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

2

53

55

9

 

3

POSS-II J

897

897

0

897

100

 

1

POSS-II F

897

897

0

897

100

 

1

POSS-II N

897

331

19

         350

39

 

4

SERC-J/EJ 

     894

829

0

829

93

 

1

South-F

894

894

0

894

100

 

1

UKST-IR

894

392

7

399

45

 

4

South-SR

116

116

0

116

100

 

2

South-QV

94

94

0

94

100

 

2

POSS-I O

936

15

2

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

0

27

3

 

4

SERC-J

894

709

0

709

79

 

1

South-F

894

742

0

742

83

 

1

UKST-IR

894

2

0

2

0

 

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

271

0

271

86

 

1

SERC

894

889

0

889

99

 

1

 

GSPC-II REDUCTIONS

Survey

Goal

Previous Month

Current Month

Current Total

% done

Notes

Priority

POSS-I

584

603

1

601

100

P1

1

POSS-II

314

271

7

278

88

 

1

SERC

894

905

40

945

100

 

1