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Date: Mon, 10 Jun 2002 06:59:29 -0400
From: Brian Mason <bdm@usno.navy.mil>
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It has come to my attention that several of the catalogs on the ADC website have 
been superseded by catalogs we distributed on CD last year, specifically:

Catalog I/237 (WDS 1996.0)              by WDS 2001.0
Catalog V/39  (4th Orbit Catalog)       by the 5th Orbit Catalog
Catalog VI/46 (Interferometric Catalog) by the 3rd Interferometric Catalog

as well as a new catalog: The Photometric Magnitude Difference Catalog


What is the best way to go about upgrading these?

Thanks,

Brian Mason
-----------------------------------------------------------------------------
Brian D. Mason                                                               
Project Manager, Washington Double Star Program                              
Astrometry Department                                                        
U. S. Naval Observatory                        phone:            202-762-1412
3450 Massachusetts Avenue NW                   fax:              202-762-1516
Washington DC 20392-5420                       email: bdm@draco.usno.navy.mil
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From adc  Mon Jul  1 10:31:48 2002
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Subject: Questions on the Delta-m catalog 
To: bdm@draco.usno.navy.mil
Date: Mon, 1 Jul 2002 10:31:48 -0400 (EDT)
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Dear Brian,

We have received the CD in good order, thank you.

I have started processing the Delta-m catalog and have flagged several 
underlined data format inconsistencies in the deltam.txt file listed below: 

 
00114+5850 LGG   1      1.07   1 Lgg1993  J12300+/-130 SIGMA = 0.1
                                           -
00114+5850 LGG   1      1.53   1 Lgg1993  J11900+/-270 SIGMA = 0.1
                                           - 
00114+5850 LGG   1      2.25   1 Lgg1993  J10800+/-140 SIGMA = 0.1
                                           - 
07289+4811 KUI  30      5.0 :  1 Str1969b P
                            -   
12493+2733 HJ  522        01   4 Wal1947  W
                        --   
16044-1122 STF1998      0,06     Rak1982  W
                         -
16061+1320 STF2007AC    3 54   3 Dtr1943  W
                         -
16086-3906 RST3930CD    3.44   1Lei1997   M 1600       SIGMA = 0.05
                                - 
16086-3906 RST3930CD    3.58   1Lei1997   M 2200       SIGMA = 0.04
                                -
19206+3911 STF3131      1 68   4 Wal1947  W
                         -
1954842859 ES  495AC    4.42   4 Wal1947  W
     -
20557+6082 STF3133      1.38   2 Str1969b P
        --

Some are just misalignments, others containing bad decimal points, forbidden  
character and wrong value.

Please provide a list of corrections at your convenience.

The references.txt file had to be reformatted, eliminating blank line entries
and expanding the logical record length.

Please review my changes to your original "readme" file below:


II/23x         The Photometric Magnitude Difference Catalog       (Worley+ 2001)
================================================================================
The Photometric Magnitude Difference Catalog
    Worley C.E., Mason B.D., Wycoff G.L.
   <US Naval Observatory (2001)>
================================================================================
ADC_Keywords: Stars, double and multiple ; Photometry
Keywords: Stars: Binaries: General, Stars: Binaries: Visual, Catalogs

Description:
    The Photometric Magnitude Difference Catalog is a collection of all double
    star photometric data which does not contain astrometric information and is
    therefore inappropriate for the Washington Double Star Catalog. Magnitude
    difference information can be useful in estimating mass ratios, determining
    photocentric positions which are color dependent, or into investigations of
    variability in close binary systems. Due to uncertainties in bandpass 
    characteristics or variability, no summary line is presented, rather a 
    complete listing of all data. 

Introduction:
   The Photometric Magnitude Difference Catalog (hereafter Delta-M Catalog) was 
   initiated as an internal USNO publication by C.E. Worley and remained as an 
   internal publication for over 20 years. While private copies circulated, this
   is the first open presentation of these accumulated data. No ``WDS-like'' 
   summary line is provided, rather, a complete listing of all photometric data 
   is given. When available, bandpass characteristics and errors are provided, 
   as are other notes (for example, systems not in the WDS are indicated).

File Summary:
--------------------------------------------------------------------------------
 FileName         Lrecl     Records    Explanations
--------------------------------------------------------------------------------
ReadMe               80           .    This file
deltam.dat           88       19589    Delta-M Catalog
dm.txt               80         177    Delta-M Catalog Documentation 
table1.txt           80          23    ascii version of Table 1
method.txt           80          26    method key for deltam.dat
refs.dat            338        4191    Reference file
--------------------------------------------------------------------------------

See also:
    http://ad.usno.navy.mil/wds/dmtext.html : Delta-M Catalog
    maintained at the U.S. Naval Observatory

Byte-by-byte Description of file: deltam.dat
--------------------------------------------------------------------------------
   Bytes  Format  Units      Label     Explanations
--------------------------------------------------------------------------------
   1-  2   I2     h          RAh      *Right Ascension 2000 (hours)
   3-  5   I3     0.1min     RAdm     *Right Ascension 2000 (minutes)
       6   A1     ---        DE-      *Declination 2000 (sign)
   7-  8   I2     deg        DEd      *Declination 2000 (degrees)
   9- 10   I2     arcmin     DEm      *Declination 2000 (minutes)
  12- 18   A7     ---        DiscName *Discoverer Code & Number
  19- 23   A5     ---        Comp     *Component Identification
  24- 28   F5.2   mag        DM        Magnitude Difference
  31- 32   I2     ---        NumObs    ?Number of observations used to 
                                        compute DM
  34- 41   A8     ---        RefCode  *Reference Code           
  43       A1     ---        Meth     *Method
  45- 88   A44    ---        Notes    *?Notes
-------------------------------------------------------------------------------
Note on RAh, RAdm, DE-, DEd, DEm:
   The positions given represent our best estimates of these values. Where
   possible, these are based on the WDS data, with proper motion incorporated. 
Note on DiscName:
   The discoverer, identified by a one-to-three letter code, and the 
   discoverer's number, if assigned. The reference list ("refs.dat")
   should be consulted first to identify individuals. 
Note on Comp:
   Components, when the object has more than two. The WDS 2001 scheme is
   maintained.
Note on RefCode:
   The NewCode from refs.dat file. The first three letters corresponds to the
   WDS discoverer while the next four numbers indicate the date of publication.
Note on Meth:
   The various methods are detailed below. There are a plethora of 
   interferometric techniques which are distinguished due to the familiarity of
   the authors with same. For specifics, consult the appropriate reference
   cited in RefCode.
       A = Adaptive Optics.
       B = Long-baseline interferometer visibility amplitude fitting.
       C = Visual measures with a double-image micrometer.
       D = speckle interferometric comparison of DVA peak heights of stars with
           known delta-m and approximately the same brightness.
       E = speckle interferometric visibility curve-fitting.
       F = speckle interferometric fork.
       G = Visual estimate made with an objective grating.
       H = Wickes and Dicke interferometer - rotating prism and high-frequency 
           chopping wheel.
       I = Integrated image taken with speckle camera. No autocorrelation is 
           done, and the scaled peak heights are compared.
       J = CCD.
       K = Focal-grating photometer.
       L = speckle interferometric relative intensity of autocorrelation.
       M = IR speckle interferometric shift-and-add.
       N = Photocell with diaphragm in focal plane.
       O = Lunar Occultation.
       P = Photographic plates.
       Q = Tycho photometry of Hipparcos Stars
       R = Area scanner.
       S = speckle interferometric modified shift-and-add.
       T = speckle interferometric triple correlation or bispectrum.
       V = Photoelectric photometry.
       W = Wedge photometer.
       Z = Visual photometry with a double-image or polarizing photometer.
Note on Notes:
   This may contain specifics of the filter used (both effective wavelength and
   FWHM in nanometers), errors (i.e., ``SIGMA = ''), colors, and indications of
   uncertainty, variability when a component is not in the WDS, or when a
   reference is to an additional publication.
--------------------------------------------------------------------------------

Byte-by-byte Description of file: refs.dat
--------------------------------------------------------------------------------
   Bytes   Format   Units     Label     Explanations
--------------------------------------------------------------------------------
   1-  8    A8      ---       NewCode  *New reference code used in Orbit, 
                                        Speckle and Delta-M Catalogs
  11- 13    A3      ---       OldCode   Discoverer Code
  14- 15    I2      ---       RefNo    *?Reference number of publication
  18- 54    A37     ---       Obs       Observer(s)
  55-338    A284    ---       Publ      Publication reference for measures
--------------------------------------------------------------------------------
Note on NewCode:
   The first three letters corresponds to the WDS discoverer while the next four
   numbers indicate the date of publication.  New Code = XYZ1999x
Note on RefNo:
   99 = Unpublished, manuscript or reference not found. 


References:
    Bagnuolo, Jr., W.G. & Sowell, J.R. 1988, AJ 96, 1056
    Baize, P. 1950, J. Obs. 33, 1
    ten Brummelaar, T.A., Mason, B.D., Bagnuolo, Jr., W.G., Hartkopf, W.I., 
      McAlister, H.A., & Turner, N.H. 1996, AJ, 112, 1180
    ten Brummelaar, T.A., Mason, B.D., McAlister, H.A., Roberts, Jr., L.C., 
      Turner, N.H., Hartkopf, W.I., & Bagnuolo, Jr., W.G. 2000, AJ, 119, 2403
    ESA 1997, The Hipparcos and Tycho Catalogues (ESA SP-1200) (Noordwijk: ESA)
    Fabricius, C. & Makarov, V.V. 2000, A&A 356, 141
    Franz, O.G. 1970, Lowell Obs. Bull., 17, 191
    Lindenblad, I.W. 1970, AJ 75, 841
    Mason, B.D. 1996, AJ 112, 2260
    Mason, B.D. 1997, AJ 114, 808
    Mason, B.D., McAlister, H.A., Hartkopf, W.I., & Bagnuolo, Jr., W.G. 1993, 
      AJ 105, 220
    Pickering, E. 1879, Harvard Annals 11, 105
    Roberts, Jr., L.C. 1999, PASP, 111, 650
    Strand, K.A. 1969, Pub. USNO 18, Pt. 5
    Tokovinin, A.A. & Shatskii, N.I. 1995, Pisma Astron. Zhur. 21, 523
    Worley, C.E. 1969, AJ 74, 764

================================================================================
(End)        B.D.  Mason          [U.S. Naval Observatory]           14-Aug-2001


Did I include all applicable files?  Let me know if you concur with my changes and additions.  If not, please provide corrections.

Regards,
Gail


From bdm@usno.navy.mil  Wed Jul  3 09:57:06 2002
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Date: Wed, 3 Jul 2002 09:59:16 -0400
From: Brian Mason <bdm@usno.navy.mil>
Message-Id: <200207031359.g63DxGX07954@draco.usno.navy.mil>
To: adc@adc.gsfc.nasa.gov
Subject: Re: Questions on the Delta-m catalog
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Good eye! Here are the corrected lines.

The first three,

00114+5850 LGG   1      1.07   1 Lgg1993  J12300+/-130 SIGMA = 0.1
00114+5850 LGG   1      1.53   1 Lgg1993  J11900+/-270 SIGMA = 0.1
00114+5850 LGG   1      2.25   1 Lgg1993  J10800+/-140 SIGMA = 0.1

are all ok. Apparently the notes actually begin in byte 44 rather than 45.

corrected data lines:

07289+4811 KUI  30      5.0    1 Str1969b H measure uncertain.                                      
12493+2733 HJ  522      7.01   4 Wal1947  Y                                                         
16044-1122 STF1998      0.06     Rak1982  Y                                                         
16060+1319 STF2007AC    3.54   3 Dtr1943  Y                                                         
16086-3906 RST3930CD    3.44   1 Lei1997  S 1600       SIGMA = 0.05                                 
16086-3906 RST3930CD    3.58   1 Lei1997  S 2200       SIGMA = 0.04                                 
19206+3911 STF3131      1.68   4 Wal1947  Y                                                         
20576+6121 STF3133      1.38   2 Str1969b H                                                         


Rest looks great, thanks!

Brian
-----------------------------------------------------------------------------
Brian D. Mason                                                               
Project Manager, Washington Double Star Program                              
Astrometry Department                                                        
U. S. Naval Observatory                        phone:            202-762-1412
3450 Massachusetts Avenue NW                   fax:              202-762-1516
Washington DC 20392-5420                       email: bdm@draco.usno.navy.mil
-----------------------------------------------------------------------------
WDS web page:                         http://ad.usno.navy.mil/ad/wds/wds.html
-----------------------------------------------------------------------------

From adc  Wed Jul 10 15:30:18 2002
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From: ADC operator account <adc>
Message-Id: <200207101930.PAA14744@adc.gsfc.nasa.gov>
Subject: Re: Questions on the Delta-m catalog
To: bdm@usno.navy.mil (Brian Mason)
Date: Wed, 10 Jul 2002 15:30:18 -0400 (EDT)
Cc: adc
In-Reply-To: <200207031359.g63DxGX07954@draco.usno.navy.mil> from "Brian Mason" at Jul 03, 2002 09:59:16 AM
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Status: OR

Hi Brian,

Thank you for the corrections.  I still have two remaining questions.

In my original message I pointed out the line below, the "4" should
be replaced with a + or - sign. I received no correction line from you
on this one.

1954842859 ES  495AC    4.42   4 Wal1947  W
     -

Does the line below

20576+6121 STF3133      1.38   2 Str1969b H

replace this line?

20557+6082 STF3133      1.38   2 Str1969b P
        --

Thank you,
Gail


> 
> 
> 
> Good eye! Here are the corrected lines.
> 
> The first three,
> 
> 00114+5850 LGG   1      1.07   1 Lgg1993  J12300+/-130 SIGMA = 0.1
> 00114+5850 LGG   1      1.53   1 Lgg1993  J11900+/-270 SIGMA = 0.1
> 00114+5850 LGG   1      2.25   1 Lgg1993  J10800+/-140 SIGMA = 0.1
> 
> are all ok. Apparently the notes actually begin in byte 44 rather than 45.
> 
> corrected data lines:
> 
> 07289+4811 KUI  30      5.0    1 Str1969b H measure uncertain.                                      
> 12493+2733 HJ  522      7.01   4 Wal1947  Y                                                         
> 16044-1122 STF1998      0.06     Rak1982  Y                                                         
> 16060+1319 STF2007AC    3.54   3 Dtr1943  Y                                                         
> 16086-3906 RST3930CD    3.44   1 Lei1997  S 1600       SIGMA = 0.05                                 
> 16086-3906 RST3930CD    3.58   1 Lei1997  S 2200       SIGMA = 0.04                                 
> 19206+3911 STF3131      1.68   4 Wal1947  Y                                                         
> 20576+6121 STF3133      1.38   2 Str1969b H                                                         
> 
> 
> Rest looks great, thanks!
> 
> Brian
> -----------------------------------------------------------------------------
> Brian D. Mason                                                               
> Project Manager, Washington Double Star Program                              
> Astrometry Department                                                        
> U. S. Naval Observatory                        phone:            202-762-1412
> 3450 Massachusetts Avenue NW                   fax:              202-762-1516
> Washington DC 20392-5420                       email: bdm@draco.usno.navy.mil
> -----------------------------------------------------------------------------
> WDS web page:                         http://ad.usno.navy.mil/ad/wds/wds.html
> -----------------------------------------------------------------------------
> 


From bdm@usno.navy.mil  Thu Jul 11 07:19:39 2002
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Date: Thu, 11 Jul 2002 07:22:21 -0400
From: Brian Mason <bdm@usno.navy.mil>
Message-Id: <200207111122.g6BBMLU21080@draco.usno.navy.mil>
To: adc@adc.gsfc.nasa.gov
Subject: Re: Questions on the Delta-m catalog
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Gail,
 
> Hi Brian,
> 
> Thank you for the corrections.  I still have two remaining questions.
> 
> In my original message I pointed out the line below, the "4" should
> be replaced with a + or - sign. I received no correction line from you
> on this one.
> 
> 1954842859 ES  495AC    4.42   4 Wal1947  W
>      -

The correct id should read :

19584+2859


> Does the line below
> 
> 20576+6121 STF3133      1.38   2 Str1969b H
> 
> replace this line?
> 
> 20557+6082 STF3133      1.38   2 Str1969b P
>         --

yes. THANKS! for all your help,

Brian
@@@@ADC Gail L Schneider.  16-Jul-2002: Made final data and ReadMe edits and 
moved files to FTP server for general distribution.
