REVISION HISTORY for SAC DATABASE The goal of the people working on the Saguaro Astronomy Club database has been to provide a listing which could yield an observing list for use at the telescope. The early versions covered plenty of objects for users of scopes up to 8" in size. As we added more objects and data, the list became more massive and we believe that it now covers a large portion of what could be seen in a telescope in the 10" to 14" range. Addition of many more objects will add many small and faint galaxies, seeing as that is about all that remains below 14 magnitude. We do not relish this task and probably will not undertake such a large work. Version 1.0 consisted of 1100 objects down to a magnitude limit of about 11.5. It was also the beginning of the navstar and multistr files. Version 2.0 started to add a variety of objects from the RNGC. We soon discovered an excellent list of corrections from Brian Skiff and Dr. Harold Corwin. Version 3.0 should not be used. It is easy to spot the erroneous data. Look at M31, the Andromeda Galaxy, if its' declination is -31, that is the bad version!! We certainly learned a lot about maintaining back ups to data. Version 4.0 combined data from version 2.0 with the data input by Jeff Weintraub from Sky Catalog 2000. This version contains much good info and started to show us how massive a fairly complete deep sky database was going to get. This was the first version to contain Dan Ward's Report Generator. This version was compressed with PKPAK 3.61. After the release of version 4.0 many SAC members joined together in a combined effort to try and find as much info as we could on objects each person was assigned. The listing of who-did-what is in SACDOC.TXT. Several intermediate versions were compiled within the club, and then: Version 5.0 fixed some problems with the DESCR field and included all the NOTES which members had found. With the inclusion of multistr, navstar, potporri and Jim Lucyk's photondx files, this was the best version to date. A medium to large telescope owner with good skies can keep busy with version 5 for many observing sessions. A.J. Crayon's install program will put this version onto hard disk. The files are no larger than 360K each, to accommodate BBS operators. SAC Report Generator has been rewritten to include several more features. This version was compressed with the old compression algorithm so that we would only have to include ARCE on disk to un-arc the files. Version 5.1 fixed a small problem with the Report Generator. It can now search for objects with lower case characters in the name, such as Cr or Tr. If you are using your own database manager or if you do not use SACREP to search for individual objects, the update is unnecessary. Version 5.2 added several corrections, given in the file "errata50.txt". Dan Ward updated the Report Generator. Several internal versions existed within the SAC as we updated the information and Dan Ward set up Report Generator to accomodate the changes. We dropped the SOURCE field, finding that we where doing a poor job of keeping track of where each objects info source. We adding the SUBR field with info from RC3 on surface brightness. Sizes of several fields changed as the NOTES and NGC DESCR fields got larger. U2 and TIR fields got smaller because we found that we did not need to provide multiple chart numbers for each object. Version 6.0 contains all the changes mentioned above and accompanying changes made to Report Generator. Steve Coe