Modified after EG visit to CN Jun 3, 1993 PDS-SBN Peer Review IHW Data Collection 18-19 May 1993 LASP - U of Colorado Summary of Liens/Recommendations A.General 1. Collect all references from text fields and list as references in catalog. Action: Added references to the Atlas and original Study; all other references listed (except private communication) from the Summary Volume. 2. Delete and/or clarify references to Figures and Tables. Action: EG and R Borgen annotated the catalog to either eliminate or better describe the accompanying Figures and Tables 3. Keywords were not clear to reviewers. Action: Future CDs should include a cross reference of keywords and their definition, especially if the use across disciplines is non-uniform 4. Add filter identifications, ephemeris information (r, delta, rdot, deltaT, phase), FOV and resolution(?), spectral range to all quik.idx files where not already given and where appropriate. Investigate what can be deleted to keep the files from getting to large. Action: future modification to index tables Mission/Collection Templates 1. Jack Brandt led the study that preceded the IHW, not Lou Friedman. Action: EG looked up Ray Newburn Preface file, read the Summary Volume chapter, and discussed problem with M Niedner. The latter provided a reference to the NASA TM which contains the report authored by Brandt, Newburn and Friedman. 2. On CDs 25 and 26, be sure to include statements, at a high level, that data were not obtained from all instruments. Action: Future consideration 3. Mission, line 30 - residence countries --> residing in or equivalent. Action: R Borgen made change in the master catalog report at CN 4. Mission, lines 38-39 - Goals are not products. Action: EG and R Borgen made the change in Catalog Report at CN 5. Collection - delete reference to amateur spectra and drawings. Action: EG and RBorgen removed reference to this data by eliminating the dataset templates, instrument templates, and references in the Science Objectives found in AM Visual and AM Photograhs. EG had discussions with J Brandt and S Edberg at the IHW final meeting to clarify the status of these 2 groups of data. S Edberg will transfer to J Brandt at least the photographic material; he has indicated that one set of recorded spectra may be useable; discussions will continue 6. EDR and RDR "use" may not be appropriate in some cases, notably spectroscopy, but this is probably not an urgent issue. Action: Future CDs dealing with spacecraft data should more carefully follow standard CODMAC rules. Astrometry 1. Are the two pairs of alpha,delta for each observation adequately described? Get a more detailed explanation from Yeomans. Check that column headings in .idx file adequately distinguish the two fields. Action: In the Summary Volume, p31, there is a statement that the original RA,DEC data has had an "elliptic correction" done to it. This correction is described in the USNO Expl Suppl, (1992, Seidelman, K), p. 170, eq 3.531-1. The RA,DEC that appear in the Index tables are the corrected values. Discussions with Don Yeomans indictaes this correction is standard and this is what Astrometry Network planned. Sentence added to the template. 2. Verify and write down that these are observations of the photocenter and that the nuclear offsets from the photocenter are handled entirely in the ephemerides and models. Action: EG talked to Don Yeomans who indicated that the observations were of the "photocenter"; this statement has been added to the Astrometry description in the dataset template Infrared Images 1. Establish pointers to calibration files. Action: Future consideration for the Errata/addenda CD 2. Try to determine the missing exposure times (contact observers) but may not be possible. Action: talk to R Knacke; indicates that all the data is in the Archive and we would need to seek original submitter. Will consider for addenda CD. 3. Add a field to .idx file to indicate if image is calibrated. Action: For future CDs, EG will investigate 4. Check that the beam units are correct and included. Follow up with John Mergen. Action J Mergen will supply background information, no apparent descrepancies. Photometry 1. Use of TIME-OBS may be wrong in some cases; inconsistencies between .tab files and .idx files. Investigate and fix if wrong. Action: EG discussed with R Knacke but it appears to be wrong entry. Mikael Aronsson was queried and indicated that most inconsistencies are identified in errata file already. New errors will be sent as text file. The inconsistency was explained by Aronsson in that the index tables were made last and errors detected in the FITS header were corrected there. In those cases when a time was specificed in the table it became possible to identify the mid-point TIME-OBS with greter accuracy than in the FITS header. 2. Add pointers to filter tables. Action: Consider for future addenda CD Polarimetry 1. Check that PAs are in the correct coordinate system. Action: EG and MA reviewed the ir_pol.idx table finding that most values were close to zero (or slightly negative). 2. Missing entries. Try to get but probably not possible. Action: Only possible by contacting PI's; low priority for future CDs. Spectra 1. Check that use of column-major is consistent. Cross-check against optical spectra. Action: discussion with R Knacke indicates that order always column- major. Done as Binary Tables, which did not exist in FITS. Ok as is. 2. Note bad data point in IRSP0008.dat and attempt to find out how to correct it. Action: no easy solution, just typo. Will flag in error listing. 3. Verify that problem with IRSP0005 & 6 is due to interpretation of BSCALE and not a real problem. Check decimal place and number of significant digits. Action: discussion with Mike DiSanti indicates that the interpretation of BSCALE was causing some confusion. Discussion with R. Knacke indicates that decimal point was not intended to show accuracy but consistency Discussion with Mikael Aronsson indicates that the discipline did not take care to insure adequate digits for accuracy. Will flag as text file. 4. Try to get actual data to go with headers for FTS data. May not be possible. Action: For future CDs, EG will investigate. Large Scale Phenomena 1. Add in template a reference to printed atlas. Action: EG added this reference in all parts about the analg data. 2. Determine how scans were set up for minimum/maximum on LSPN images where lowest calibration spots show up as zeros. E.g., are the zeros real or are they due to the scanning procedure. Action: EG contacted Mal Niedner, Dan Klinglesmith to explain the procedure. The LSPN group followed a procedure that first set a backgroung against chemical fog of the plate, and then adjusted the offset for 0.2 (density). There could be a few zeroes in the least dense spot, which may affect the bottom of the H-D curve. A number of images from Meech were reviewed and in three cases, the lowest spot had some zeroes. For these data, the spots occur on the same plate as the Comet Halley image. Only when the subsampled images were reviewed did the problem identified by Meech appear so it was concluded that the "zeroes identified" were a problem of the display not data. Near Nucleus Images 1. Check ident of Gunn Z filter - is it real or is it a typo? Action: EG will review original Thuan and Gunn article (1976); found no reference to "Z" filter. Original 4 filters stop at "r". Conclude a typo and that "z" is really "g". 2. Redefine SENSE keyword to clarify in terms of NAXIS1 and NAXIS2 instead of in terms of image display. Clarify the definition of CROTA1. Action: MA defined SENSE in terms of NAXIS1 and 2; the definition was shown to S Larson who agreed that this was more general. 3. Check with S. Larson on generation of CROTA1 and SENSE to find out if there is a pattern to the erroneous values. Action: EG discussed with S Larson who indicated that the "log books" were used by NNSN people to add these keywords. Any mistakes are probably random although he agreed the Fink et al problem was a miscommun- ication. No action deeemed necessary. 4. Modify instrument template to indicate that long-wave side of broad- band I filter response is dependent on choice of CCD. Action: EG added a statement to this effect in the NNSN description in both instrument and dataset templates 5. Can we easily get gains for each instrument? Try from PIs and insert data into revised .idx file (probably not in original data files). E.g., UMd - 15 e-/ADU; UH GEC - 1.2 e-/ADU. Action: For future CDs, EG will investigate, but this was a BIG PROJECT 6. Can we add the flat fields and photometric calibration images? Action: For future CDs, EG will investigate 7. Can we observe all the fields for the stars in a uniform way, e.g. on KPNO Schmidt? Probably out of our scope. Lack of stars on many NNSN images may limit utility to times when comet was faint. Action: For future CDs, EG will investigate 8. Can we collect additional calibration data from original observers? Again a big job but probably also possible. Action: For addenda CD, EG will investigate 9. Get from Karen Meech a list of images which have been flattened using the wrong file. List as errata or get re-flattened images from Karen. Action: KM gave to EG a list of the files; this list was passed to S Larson about possible solution. These files are noted in the error listing. 10. Inquire about NNSN Atlas. Action: EG discussed with S Larson; not in the near future. Photometry & Polarimetry No liens, except previously known problems with Soviet and Indian data. Action: Soviet data being reworked, may be ready for the addenda CD. Radio Science Continuum 1. Change name of limits file to indicate that some actual measurements (low S/N) are included. Action: EG annotated the catalog document after discussion with W Kinzel 2. Add template for additional radio telescopes. Action: EG had given RB a template at the workshop. The template will replace Molonglo and now include all continuum measurements. 3. Check that Arecibo template already exists and, if so, delete ours. Action: Arecibo template exists, but the instrument name and mode of operation appeared different; the lat/lon were taken from the previous entry. 4.Add Lat/Long to VLA instrument template. Action: EG left at CN printout of the u-v visibility FITS header that gave the VLA lat/lon Spectral Line 1. Again change name of limits file to indicate some actual data. Action: EG submitted a change after consulting with W Kinzel 2. Show species in quik.idx file. Action: Future inclusion on Errata/addenda CD RSUV 1. Rename as visibility;e.g., RSVIS. Also rewrite text fields to use u-v instead of UV everywhere. Check repercussions of name change. Action: text files were rewritten. The dataset name was changed to say u-v visibility. The instrument ID was more difficult. It is limited to 6 characters but VIS had been used earlier to mean VISUAL (AMVIS). Since the rsuv will appear as upper case in the catalog, there could be confusion if it appeared alone. Trying the catalog indicated that the Instrument ID (RSUV) never appears except as part of the Data_set_id (IHW-C-RSUV-2-EDR-HALLEY-V1.0) or with the Data_set name, which clearly states "u-v visibility". So RSUV is retained. Spectroscopy 1. There is a fundamental organizational problem. The sub-nets are defined as calibrated or raw but many of the files called TcalibratedU have nothing but a wavelength scale. There is no way to tell, either from the file names or from the quik file, the nature of the spectra - 1-D, long-slit, echelle, etc. Short-term fix is to add info to quik file and SPECT.IDX file; long-term solution is to rename all the files and do a new CD for the spectra. Quik file should have - type (echelle, long-slit, 1- D, etc.), observatory(?), whether fully calibrated (fluxes, even some BUNIT=OTHER are calibrated), whether continuum removed, other parameters from System Code (resol, range). Action: Errata inclusion 2. As known previously, TozziUs spectra are all saturated at a low level (due to microdensitometer scanning). Action: There exists a note in FITS header description 3. Many soviet spectra can not be calibrated despite presence of calibration files. Get details from Anita. Action: Future communciation with A Cochran for more details 4. Data files should point to calibration files and vice versa. Short- term solution probably involves only a lookup table, not pointers within the headers. Action: EG will form example for the inclusion on volume 26 5. Check with Anita Cochran about possible problems in HerbigUs data from 26 March. (Poor continuum subtraction?) Action: For the errat CD, communicate with A Cochran 6. Follow up with Anita Cochran on flux discrepancy between SPEC1687 and SPEC1693 and SpinradUs spectrum on the next day. Action: The revised error list given to Ferro/Wehinger at IHW meeting to help investigate why the descrepancy . For errata CD, communicate with A Cochran. 7. Follow up with Dave S and Mike C about 1-D spectra that appear to be a concatenation of a real spectrum followed by either noise or a step function. SPEC0870 and others. Action: M Combi sent a complete list. He indicated the CD Browser may be at fault since the results were inconsistent. At U Md various tests indicated the data was ok and the software was at fault. EG established contact D Swift, developer of CD Browser, to ask for spectra display help. 8. Document the use of the mask in DiSanti et al.(1989) spectrograph since this leads to holes in many of the spectra from that instrument. Action: EG asked M DiSanti for a statement to include in spectra description. The following will be added to the errata file for spectrascopy on Errata CD: In the spectroscopy data set there are a number of groups for which it is necessary to look at the Comment fields in the FITS header to detrmine any unusual observing conditions. One of these cases is for DiSanti et al. data for which a mask was used to block out the coma radiation and permit longer exposures. This "mask" is described in the first FITS header for the data set, and is described in DiSanti, Fink, and Schultz (1989). 9. Arrays name should be changed to imply scanned photographic long-slit. Action: EG changed names in the annotated Catalog document for CN 10. Templates have wrong ranges of dates. Action: EG had student research dates and correct. 11. Put all calibration spectra into groups under a calibration heading. Action: future work for Errata/addenda CD Meteor 1. Line 3 of EBDATASET template for Radar Orionids is inconsistently missing the word Radar. Add it. Action: added by CN 2. Index table for visual meteor data has value 60 minutes in column headed total meteor count. Either relabel column or, more usefully, add the correct total numbers. Action: Total_Minute_count was the title; it has been changed and noted 3. CD Volume is listed as 00 instead of correct value in NETMETV.IDX table. Action: EG found this was no problem and contacted JMergen who verified it was in his display Amateur 1. Accept images as is, pending confirmation with Jack Brandt. Action: J Brandt consulted with S Edberg about getting photos 2. Do not ingest pointers to amateur drawing and amateur spectra although we may revisit the spectra at a later date. Action: removed from catalog reference 3. Add caveats about use of visual magnitudes, specifically regarding looking for trends within large datasets of individual observers and noting large systematic differences from one observer to another, but otherwise OK to ingest. Add a table by observer whose observations were submitted and accepted (in Instrument Description template). Action: EG met with C Morris and S Edberg to understand quality fo data. C Morris sent some information to help form the modified ICQ table that would reflect the accuracy and reliability for observer. This was added to the instrument template. Parameter Templates 1. COUNT should be generalized. Action: MA submitted changes 2. FLUX_DENSITY should not specify units as part of definition. MA submitted changes 3. FLUX should be generalized. Action: MA submitted changes 4. PHOTOGRAPHIC_DENSITY should be generalized to include diffuse density. Action: MA submitted chnages 5. Magnitude should be broadened Action: MA submitted changes CD Organization Most reviewers had trouble figuring out the organization of the CDs, i.e., they could not figure out where in the tree to go to get certain kinds of information. In particular, the AAREADME file does not contain the right information. It should contain the basic roadmap. Most people thought that some basic instructions should be added for a few common platforms, particularly examples like Rcat xxxx.hdr xxxx.img > xxxx.fitS, stripping out the ^M for UNIX platforms, etc. Most common platform is UNIX/Ultrix and second most common is Mac. DOS is least common among the reviewers. Column headings of index tables are not uniform and equivalences should be noted. Action: EG discussed problem with Mal Niedner, IHW, who will collaborate on a ROADMAP to the CDs for volume 26 Resolution of Liens Liens on templates will be corrected before templates are ingested. Liens on data and labels will be listed as errata, both in our on-line system and on our subsequent CD of errata and addenda. Where possible, those errata will be accompanied by corrected data but this will not be possible in all cases. Many of the items in the above list are desired addenda rather than true liens. They will be addressed on the same CD as the errata to the extent possible. SBN will set priorities on these tasks and define responses in the near future.