Home » Archimedes archive » Archimedes World » AW-1992-08.adf » AWaug92 » !AWaug92/Goodies/Stargazer/info
!AWaug92/Goodies/Stargazer/info
This website contains an archive of files for the Acorn Electron, BBC Micro, Acorn Archimedes, Commodore 16 and Commodore 64 computers, which Dominic Ford has rescued from his private collection of floppy disks and cassettes.
Some of these files were originally commercial releases in the 1980s and 1990s, but they are now widely available online. I assume that copyright over them is no longer being asserted. If you own the copyright and would like files to be removed, please contact me.
| Tape/disk: | Home » Archimedes archive » Archimedes World » AW-1992-08.adf » AWaug92 |
| Filename: | !AWaug92/Goodies/Stargazer/info |
| Read OK: | ✔ |
| File size: | 165B bytes |
| Load address: | 0000 |
| Exec address: | 0000 |
Duplicates
There is 1 duplicate copy of this file in the archive:
- Archimedes archive » Archimedes World » AW-1992-08.adf » AWaug92 » !AWaug92/Goodies/Stargazer/info
- Archimedes archive » Archimedes World » AW-1992-08.adf » AWaug92 » !AWaug92/Goodies/Stargazer/!Stargazer/info
File contents
Notes on !Stargazer Release II (Version 7.00) Stargazer is an interactive star plotter, with support for the major objects in our solar system. It is tied to the internal system clock to provide real time update of a star viewing window. The time can be set from the menu to view past and future star maps. The new position of every star is calculated once a minute in the background. Stargazer is intended as a simple interactive learning tool to help beginners in astronomy learn about the planets and the stars. The most powerful and important feature is the constellation identification aid, where groups of stars are connected with dotted lines to give a representation of the name of the constellation they are part of. This facility helps to identify and remember constellation patterns in the sky. The star database is in the form of an editable textual database, which is interpreted by the application when it is first installed on the icon bar. This allows more advanced users to edit the database to include new objects. The star database contains the locations of over 1300 objects, down to magnitude 5 (the limit of visibility to the naked eye) for epoch 2000 (their exact position in the year 2000ad). Note that the greek alphabet for entry purposes is "abgdezh0iklmnxoprstvqfcw" for alpha, beta gamma etc. 'means literal. Strings are allowed in the database but are not implemented in !Stargazer. Stargazer is a RISCOS application installing itself on the Icon bar and utilising mouse, pointer and menu operations to provide its facilities. It interacts with the !Help application to give user help when required. There are two main menus, one of which is presented when the user clicks on the stargazer icon, and one which is available when the "view" window is opened. These are briefly described below. Icon menu The icon menu provides an info box and four menu options. New place allows the user to specify the observers longitude and latitude. It is initialised to longitude 0d0mE and latitude 52d0mN which is centred around Cambridge (where else) but should suit the south of England. To see the stars that are only visible from the southern hemisphere you could try 52d0mS!. The "d" and "m" are short for degrees and minutes (in lower case) and the "N","S" (for latitude) or "E","W" (in upper-case) specify positive or negative directions. Clock is an option, which when set forces a recalculation of all object in real time. Two types of timer can be specified. The system clock ties the display to the present system time. A user clock can also be set, which also keeps real time, but runs from the time given. IF the clock option is off, the sub-menus set a single sky position calculation time. Clicking on Show Sky duplicates the left button click on the icon, and opens the view window. The sub-menu allows the viewer to select either a horizontal viewpoint (0-66 degrees) or a vertical view (54-90 degrees). If you wish to see both views simultaniously simply run two copies of stargazer! Quit is self explanatory View window menu The view window menu provides extra view related facilities Find object attempts to centre the view around, and point the mouse pointer to, the chosen object. Sub-menus are used to choose the type of object, and then specify a particular occurrence. Note that star names must match the names after the equals signs in the database, including the case; these generally start with an upper case letter. The constellation finder will find the first star in the constellation, generally Alpha. Show consts will toggle the constellation identification option on or off. Zoom in and zoom out allow the user to user to optimise the view for detail. Fainter stars tend to disappear as you zoom out (and brighter stars get dimmer), to prevent the view from becoming confused. Simulate allows you to step through a simulated sequence of star positions, rather like a fast forward button. This is very processor intensive, so duration and step sizes can be varied. It provides an insight into the way the postion of the stars change during the evening. To stop a simulation run, set a new time, or click again on simulate. All the usual RISCOS window buttons apply to the view window to allow resizing, scrolling, front and window close. The displayed objects are archimedes sprites. The planets are designed to be reasonably recognisable, but not representative in terms of their magnitude. The program is written completely in BBC basic with two libraries for sprite and windows handling. These could be extracted and used with other programs. Some routines (specifically the redrawing and database interpeter) have been optimised to make the program more usable, and so may be less readable, but the operation of the program can be seen. Sorry about the "majic numbers" by the way. Happy stargazing! Bug Fixes and New features of Release II (Version 7.0) # Vertical view added # Simulation bug fixed # simulation can now be cancelled # Simulation stops clock to allow inspection of final positions # Bug in time reference and Planet positions fixed # Clock on/off added, with user setting from menu # Object search mouse placement bug fixed # Moon plotted after Sun for realistic eclipses # Longitude setting bug fixed # Zoom out redrawing bug fixed # Program Tidied # New Icon to prevent confusion with release I Steve Ellwood (BSc), Systems engineer, EO Computer LTD (formerly Active Book Company). Home address: Castle Farm, Hasse Road, Soham, Nr Ely, Cambs CB7 5UW Tel:0353 721445 P.S. Thanks again to EO Computer LTD (Cambridge) for the continued use of the Acorn R140 with TAXAN multisync monitor.
00000000 4e 6f 74 65 73 20 6f 6e 20 21 53 74 61 72 67 61 |Notes on !Starga| 00000010 7a 65 72 20 52 65 6c 65 61 73 65 20 49 49 20 28 |zer Release II (| 00000020 56 65 72 73 69 6f 6e 20 37 2e 30 30 29 0a 0a 53 |Version 7.00)..S| 00000030 74 61 72 67 61 7a 65 72 20 69 73 20 61 6e 20 69 |targazer is an i| 00000040 6e 74 65 72 61 63 74 69 76 65 20 73 74 61 72 20 |nteractive star | 00000050 70 6c 6f 74 74 65 72 2c 20 77 69 74 68 20 73 75 |plotter, with su| 00000060 70 70 6f 72 74 20 66 6f 72 20 74 68 65 0a 6d 61 |pport for the.ma| 00000070 6a 6f 72 20 6f 62 6a 65 63 74 73 20 69 6e 20 6f |jor objects in o| 00000080 75 72 20 73 6f 6c 61 72 20 73 79 73 74 65 6d 2e |ur solar system.| 00000090 20 20 49 74 20 69 73 20 74 69 65 64 20 74 6f 20 | It is tied to | 000000a0 74 68 65 20 69 6e 74 65 72 6e 61 6c 0a 73 79 73 |the internal.sys| 000000b0 74 65 6d 20 63 6c 6f 63 6b 20 74 6f 20 70 72 6f |tem clock to pro| 000000c0 76 69 64 65 20 72 65 61 6c 20 74 69 6d 65 20 75 |vide real time u| 000000d0 70 64 61 74 65 20 6f 66 20 61 20 73 74 61 72 20 |pdate of a star | 000000e0 76 69 65 77 69 6e 67 20 77 69 6e 64 6f 77 2e 0a |viewing window..| 000000f0 54 68 65 20 74 69 6d 65 20 63 61 6e 20 62 65 20 |The time can be | 00000100 73 65 74 20 66 72 6f 6d 20 74 68 65 20 6d 65 6e |set from the men| 00000110 75 20 74 6f 20 76 69 65 77 20 70 61 73 74 20 61 |u to view past a| 00000120 6e 64 20 66 75 74 75 72 65 20 73 74 61 72 20 6d |nd future star m| 00000130 61 70 73 2e 0a 54 68 65 20 6e 65 77 20 70 6f 73 |aps..The new pos| 00000140 69 74 69 6f 6e 20 6f 66 20 65 76 65 72 79 20 73 |ition of every s| 00000150 74 61 72 20 69 73 20 63 61 6c 63 75 6c 61 74 65 |tar is calculate| 00000160 64 20 6f 6e 63 65 20 61 20 6d 69 6e 75 74 65 20 |d once a minute | 00000170 69 6e 20 74 68 65 20 62 61 63 6b 67 72 6f 75 6e |in the backgroun| 00000180 64 2e 0a 0a 53 74 61 72 67 61 7a 65 72 20 69 73 |d...Stargazer is| 00000190 20 69 6e 74 65 6e 64 65 64 20 61 73 20 61 20 73 | intended as a s| 000001a0 69 6d 70 6c 65 20 69 6e 74 65 72 61 63 74 69 76 |imple interactiv| 000001b0 65 20 6c 65 61 72 6e 69 6e 67 20 74 6f 6f 6c 20 |e learning tool | 000001c0 74 6f 20 68 65 6c 70 0a 62 65 67 69 6e 6e 65 72 |to help.beginner| 000001d0 73 20 69 6e 20 61 73 74 72 6f 6e 6f 6d 79 20 6c |s in astronomy l| 000001e0 65 61 72 6e 20 61 62 6f 75 74 20 74 68 65 20 70 |earn about the p| 000001f0 6c 61 6e 65 74 73 20 61 6e 64 20 74 68 65 20 73 |lanets and the s| 00000200 74 61 72 73 2e 20 20 54 68 65 20 6d 6f 73 74 0a |tars. The most.| 00000210 70 6f 77 65 72 66 75 6c 20 61 6e 64 20 69 6d 70 |powerful and imp| 00000220 6f 72 74 61 6e 74 20 66 65 61 74 75 72 65 20 69 |ortant feature i| 00000230 73 20 74 68 65 20 63 6f 6e 73 74 65 6c 6c 61 74 |s the constellat| 00000240 69 6f 6e 20 69 64 65 6e 74 69 66 69 63 61 74 69 |ion identificati| 00000250 6f 6e 20 61 69 64 2c 0a 77 68 65 72 65 20 67 72 |on aid,.where gr| 00000260 6f 75 70 73 20 6f 66 20 73 74 61 72 73 20 61 72 |oups of stars ar| 00000270 65 20 63 6f 6e 6e 65 63 74 65 64 20 77 69 74 68 |e connected with| 00000280 20 64 6f 74 74 65 64 20 6c 69 6e 65 73 20 74 6f | dotted lines to| 00000290 20 67 69 76 65 20 61 0a 72 65 70 72 65 73 65 6e | give a.represen| 000002a0 74 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 6e 61 |tation of the na| 000002b0 6d 65 20 6f 66 20 74 68 65 20 63 6f 6e 73 74 65 |me of the conste| 000002c0 6c 6c 61 74 69 6f 6e 20 74 68 65 79 20 61 72 65 |llation they are| 000002d0 20 70 61 72 74 20 6f 66 2e 0a 54 68 69 73 20 66 | part of..This f| 000002e0 61 63 69 6c 69 74 79 20 68 65 6c 70 73 20 74 6f |acility helps to| 000002f0 20 69 64 65 6e 74 69 66 79 20 61 6e 64 20 72 65 | identify and re| 00000300 6d 65 6d 62 65 72 20 63 6f 6e 73 74 65 6c 6c 61 |member constella| 00000310 74 69 6f 6e 20 70 61 74 74 65 72 6e 73 0a 69 6e |tion patterns.in| 00000320 20 74 68 65 20 73 6b 79 2e 0a 0a 54 68 65 20 73 | the sky...The s| 00000330 74 61 72 20 64 61 74 61 62 61 73 65 20 69 73 20 |tar database is | 00000340 69 6e 20 74 68 65 20 66 6f 72 6d 20 6f 66 20 61 |in the form of a| 00000350 6e 20 65 64 69 74 61 62 6c 65 20 74 65 78 74 75 |n editable textu| 00000360 61 6c 20 64 61 74 61 62 61 73 65 2c 0a 77 68 69 |al database,.whi| 00000370 63 68 20 69 73 20 69 6e 74 65 72 70 72 65 74 65 |ch is interprete| 00000380 64 20 62 79 20 74 68 65 20 61 70 70 6c 69 63 61 |d by the applica| 00000390 74 69 6f 6e 20 77 68 65 6e 20 69 74 20 69 73 20 |tion when it is | 000003a0 66 69 72 73 74 20 69 6e 73 74 61 6c 6c 65 64 0a |first installed.| 000003b0 6f 6e 20 74 68 65 20 69 63 6f 6e 20 62 61 72 2e |on the icon bar.| 000003c0 20 20 54 68 69 73 20 61 6c 6c 6f 77 73 20 6d 6f | This allows mo| 000003d0 72 65 20 61 64 76 61 6e 63 65 64 20 75 73 65 72 |re advanced user| 000003e0 73 20 74 6f 20 65 64 69 74 20 74 68 65 20 64 61 |s to edit the da| 000003f0 74 61 62 61 73 65 0a 74 6f 20 69 6e 63 6c 75 64 |tabase.to includ| 00000400 65 20 6e 65 77 20 6f 62 6a 65 63 74 73 2e 20 20 |e new objects. | 00000410 54 68 65 20 73 74 61 72 20 64 61 74 61 62 61 73 |The star databas| 00000420 65 20 63 6f 6e 74 61 69 6e 73 20 74 68 65 20 6c |e contains the l| 00000430 6f 63 61 74 69 6f 6e 73 20 6f 66 20 6f 76 65 72 |ocations of over| 00000440 0a 31 33 30 30 20 6f 62 6a 65 63 74 73 2c 20 64 |.1300 objects, d| 00000450 6f 77 6e 20 74 6f 20 6d 61 67 6e 69 74 75 64 65 |own to magnitude| 00000460 20 35 20 28 74 68 65 20 6c 69 6d 69 74 20 6f 66 | 5 (the limit of| 00000470 20 76 69 73 69 62 69 6c 69 74 79 20 74 6f 20 74 | visibility to t| 00000480 68 65 20 6e 61 6b 65 64 0a 65 79 65 29 20 66 6f |he naked.eye) fo| 00000490 72 20 65 70 6f 63 68 20 32 30 30 30 20 28 74 68 |r epoch 2000 (th| 000004a0 65 69 72 20 65 78 61 63 74 20 70 6f 73 69 74 69 |eir exact positi| 000004b0 6f 6e 20 69 6e 20 74 68 65 20 79 65 61 72 20 32 |on in the year 2| 000004c0 30 30 30 61 64 29 2e 0a 4e 6f 74 65 20 74 68 61 |000ad)..Note tha| 000004d0 74 20 74 68 65 20 67 72 65 65 6b 20 61 6c 70 68 |t the greek alph| 000004e0 61 62 65 74 20 66 6f 72 20 65 6e 74 72 79 20 70 |abet for entry p| 000004f0 75 72 70 6f 73 65 73 20 69 73 20 0a 22 61 62 67 |urposes is ."abg| 00000500 64 65 7a 68 30 69 6b 6c 6d 6e 78 6f 70 72 73 74 |dezh0iklmnxoprst| 00000510 76 71 66 63 77 22 20 66 6f 72 20 61 6c 70 68 61 |vqfcw" for alpha| 00000520 2c 20 62 65 74 61 20 67 61 6d 6d 61 20 65 74 63 |, beta gamma etc| 00000530 2e 20 27 6d 65 61 6e 73 20 6c 69 74 65 72 61 6c |. 'means literal| 00000540 2e 0a 53 74 72 69 6e 67 73 20 61 72 65 20 61 6c |..Strings are al| 00000550 6c 6f 77 65 64 20 69 6e 20 74 68 65 20 64 61 74 |lowed in the dat| 00000560 61 62 61 73 65 20 62 75 74 20 61 72 65 20 6e 6f |abase but are no| 00000570 74 20 69 6d 70 6c 65 6d 65 6e 74 65 64 20 69 6e |t implemented in| 00000580 20 21 53 74 61 72 67 61 7a 65 72 2e 20 20 0a 0a | !Stargazer. ..| 00000590 53 74 61 72 67 61 7a 65 72 20 69 73 20 61 20 52 |Stargazer is a R| 000005a0 49 53 43 4f 53 20 61 70 70 6c 69 63 61 74 69 6f |ISCOS applicatio| 000005b0 6e 20 69 6e 73 74 61 6c 6c 69 6e 67 20 69 74 73 |n installing its| 000005c0 65 6c 66 20 6f 6e 20 74 68 65 20 49 63 6f 6e 20 |elf on the Icon | 000005d0 62 61 72 20 61 6e 64 0a 75 74 69 6c 69 73 69 6e |bar and.utilisin| 000005e0 67 20 6d 6f 75 73 65 2c 20 70 6f 69 6e 74 65 72 |g mouse, pointer| 000005f0 20 61 6e 64 20 6d 65 6e 75 20 6f 70 65 72 61 74 | and menu operat| 00000600 69 6f 6e 73 20 74 6f 20 70 72 6f 76 69 64 65 20 |ions to provide | 00000610 69 74 73 20 66 61 63 69 6c 69 74 69 65 73 2e 0a |its facilities..| 00000620 49 74 20 69 6e 74 65 72 61 63 74 73 20 77 69 74 |It interacts wit| 00000630 68 20 74 68 65 20 21 48 65 6c 70 20 61 70 70 6c |h the !Help appl| 00000640 69 63 61 74 69 6f 6e 20 74 6f 20 67 69 76 65 20 |ication to give | 00000650 75 73 65 72 20 68 65 6c 70 20 77 68 65 6e 20 72 |user help when r| 00000660 65 71 75 69 72 65 64 2e 0a 54 68 65 72 65 20 61 |equired..There a| 00000670 72 65 20 74 77 6f 20 6d 61 69 6e 20 6d 65 6e 75 |re two main menu| 00000680 73 2c 20 6f 6e 65 20 6f 66 20 77 68 69 63 68 20 |s, one of which | 00000690 69 73 20 70 72 65 73 65 6e 74 65 64 20 77 68 65 |is presented whe| 000006a0 6e 20 74 68 65 20 75 73 65 72 20 63 6c 69 63 6b |n the user click| 000006b0 73 0a 6f 6e 20 74 68 65 20 73 74 61 72 67 61 7a |s.on the stargaz| 000006c0 65 72 20 69 63 6f 6e 2c 20 61 6e 64 20 6f 6e 65 |er icon, and one| 000006d0 20 77 68 69 63 68 20 69 73 20 61 76 61 69 6c 61 | which is availa| 000006e0 62 6c 65 20 77 68 65 6e 20 74 68 65 20 22 76 69 |ble when the "vi| 000006f0 65 77 22 20 77 69 6e 64 6f 77 0a 69 73 20 6f 70 |ew" window.is op| 00000700 65 6e 65 64 2e 20 20 54 68 65 73 65 20 61 72 65 |ened. These are| 00000710 20 62 72 69 65 66 6c 79 20 64 65 73 63 72 69 62 | briefly describ| 00000720 65 64 20 62 65 6c 6f 77 2e 0a 0a 49 63 6f 6e 20 |ed below...Icon | 00000730 6d 65 6e 75 0a 0a 54 68 65 20 69 63 6f 6e 20 6d |menu..The icon m| 00000740 65 6e 75 20 70 72 6f 76 69 64 65 73 20 61 6e 20 |enu provides an | 00000750 69 6e 66 6f 20 62 6f 78 20 61 6e 64 20 66 6f 75 |info box and fou| 00000760 72 20 6d 65 6e 75 20 6f 70 74 69 6f 6e 73 2e 0a |r menu options..| 00000770 0a 4e 65 77 20 70 6c 61 63 65 20 61 6c 6c 6f 77 |.New place allow| 00000780 73 20 74 68 65 20 75 73 65 72 20 74 6f 20 73 70 |s the user to sp| 00000790 65 63 69 66 79 20 74 68 65 20 6f 62 73 65 72 76 |ecify the observ| 000007a0 65 72 73 20 6c 6f 6e 67 69 74 75 64 65 20 61 6e |ers longitude an| 000007b0 64 20 6c 61 74 69 74 75 64 65 2e 0a 49 74 20 69 |d latitude..It i| 000007c0 73 20 69 6e 69 74 69 61 6c 69 73 65 64 20 74 6f |s initialised to| 000007d0 20 6c 6f 6e 67 69 74 75 64 65 20 30 64 30 6d 45 | longitude 0d0mE| 000007e0 20 61 6e 64 20 6c 61 74 69 74 75 64 65 20 35 32 | and latitude 52| 000007f0 64 30 6d 4e 20 77 68 69 63 68 20 69 73 20 63 65 |d0mN which is ce| 00000800 6e 74 72 65 64 0a 61 72 6f 75 6e 64 20 43 61 6d |ntred.around Cam| 00000810 62 72 69 64 67 65 20 28 77 68 65 72 65 20 65 6c |bridge (where el| 00000820 73 65 29 20 62 75 74 20 73 68 6f 75 6c 64 20 73 |se) but should s| 00000830 75 69 74 20 74 68 65 20 73 6f 75 74 68 20 6f 66 |uit the south of| 00000840 20 45 6e 67 6c 61 6e 64 2e 20 54 6f 20 73 65 65 | England. To see| 00000850 0a 74 68 65 20 73 74 61 72 73 20 74 68 61 74 20 |.the stars that | 00000860 61 72 65 20 6f 6e 6c 79 20 76 69 73 69 62 6c 65 |are only visible| 00000870 20 66 72 6f 6d 20 74 68 65 20 73 6f 75 74 68 65 | from the southe| 00000880 72 6e 20 68 65 6d 69 73 70 68 65 72 65 20 79 6f |rn hemisphere yo| 00000890 75 20 63 6f 75 6c 64 20 74 72 79 0a 35 32 64 30 |u could try.52d0| 000008a0 6d 53 21 2e 20 20 54 68 65 20 22 64 22 20 61 6e |mS!. The "d" an| 000008b0 64 20 22 6d 22 20 61 72 65 20 73 68 6f 72 74 20 |d "m" are short | 000008c0 66 6f 72 20 64 65 67 72 65 65 73 20 61 6e 64 20 |for degrees and | 000008d0 6d 69 6e 75 74 65 73 20 28 69 6e 20 6c 6f 77 65 |minutes (in lowe| 000008e0 72 20 63 61 73 65 29 0a 61 6e 64 20 74 68 65 20 |r case).and the | 000008f0 22 4e 22 2c 22 53 22 20 28 66 6f 72 20 6c 61 74 |"N","S" (for lat| 00000900 69 74 75 64 65 29 20 6f 72 20 22 45 22 2c 22 57 |itude) or "E","W| 00000910 22 20 28 69 6e 20 75 70 70 65 72 2d 63 61 73 65 |" (in upper-case| 00000920 29 20 73 70 65 63 69 66 79 20 70 6f 73 69 74 69 |) specify positi| 00000930 76 65 0a 6f 72 20 6e 65 67 61 74 69 76 65 20 64 |ve.or negative d| 00000940 69 72 65 63 74 69 6f 6e 73 2e 0a 0a 43 6c 6f 63 |irections...Cloc| 00000950 6b 20 69 73 20 61 6e 20 6f 70 74 69 6f 6e 2c 20 |k is an option, | 00000960 77 68 69 63 68 20 77 68 65 6e 20 73 65 74 20 66 |which when set f| 00000970 6f 72 63 65 73 20 61 20 72 65 63 61 6c 63 75 6c |orces a recalcul| 00000980 61 74 69 6f 6e 20 6f 66 20 61 6c 6c 20 6f 62 6a |ation of all obj| 00000990 65 63 74 20 0a 69 6e 20 72 65 61 6c 20 74 69 6d |ect .in real tim| 000009a0 65 2e 20 54 77 6f 20 74 79 70 65 73 20 6f 66 20 |e. Two types of | 000009b0 74 69 6d 65 72 20 63 61 6e 20 62 65 20 73 70 65 |timer can be spe| 000009c0 63 69 66 69 65 64 2e 20 20 54 68 65 20 73 79 73 |cified. The sys| 000009d0 74 65 6d 20 63 6c 6f 63 6b 20 74 69 65 73 0a 74 |tem clock ties.t| 000009e0 68 65 20 64 69 73 70 6c 61 79 20 74 6f 20 74 68 |he display to th| 000009f0 65 20 70 72 65 73 65 6e 74 20 73 79 73 74 65 6d |e present system| 00000a00 20 74 69 6d 65 2e 20 20 41 20 75 73 65 72 20 63 | time. A user c| 00000a10 6c 6f 63 6b 20 63 61 6e 20 61 6c 73 6f 20 62 65 |lock can also be| 00000a20 20 73 65 74 2c 20 77 68 69 63 68 20 0a 61 6c 73 | set, which .als| 00000a30 6f 20 6b 65 65 70 73 20 72 65 61 6c 20 74 69 6d |o keeps real tim| 00000a40 65 2c 20 62 75 74 20 72 75 6e 73 20 66 72 6f 6d |e, but runs from| 00000a50 20 74 68 65 20 74 69 6d 65 20 67 69 76 65 6e 2e | the time given.| 00000a60 20 20 49 46 20 74 68 65 20 63 6c 6f 63 6b 20 6f | IF the clock o| 00000a70 70 74 69 6f 6e 20 69 73 20 0a 6f 66 66 2c 20 74 |ption is .off, t| 00000a80 68 65 20 73 75 62 2d 6d 65 6e 75 73 20 73 65 74 |he sub-menus set| 00000a90 20 61 20 73 69 6e 67 6c 65 20 73 6b 79 20 70 6f | a single sky po| 00000aa0 73 69 74 69 6f 6e 20 63 61 6c 63 75 6c 61 74 69 |sition calculati| 00000ab0 6f 6e 20 74 69 6d 65 2e 20 0a 0a 43 6c 69 63 6b |on time. ..Click| 00000ac0 69 6e 67 20 6f 6e 20 53 68 6f 77 20 53 6b 79 20 |ing on Show Sky | 00000ad0 64 75 70 6c 69 63 61 74 65 73 20 74 68 65 20 6c |duplicates the l| 00000ae0 65 66 74 20 62 75 74 74 6f 6e 20 63 6c 69 63 6b |eft button click| 00000af0 20 6f 6e 20 74 68 65 20 69 63 6f 6e 2c 20 61 6e | on the icon, an| 00000b00 64 20 6f 70 65 6e 73 20 0a 74 68 65 20 76 69 65 |d opens .the vie| 00000b10 77 20 77 69 6e 64 6f 77 2e 20 54 68 65 20 73 75 |w window. The su| 00000b20 62 2d 6d 65 6e 75 20 61 6c 6c 6f 77 73 20 74 68 |b-menu allows th| 00000b30 65 20 76 69 65 77 65 72 20 74 6f 20 73 65 6c 65 |e viewer to sele| 00000b40 63 74 20 65 69 74 68 65 72 20 61 20 68 6f 72 69 |ct either a hori| 00000b50 7a 6f 6e 74 61 6c 0a 76 69 65 77 70 6f 69 6e 74 |zontal.viewpoint| 00000b60 20 28 30 2d 36 36 20 64 65 67 72 65 65 73 29 20 | (0-66 degrees) | 00000b70 6f 72 20 61 20 76 65 72 74 69 63 61 6c 20 76 69 |or a vertical vi| 00000b80 65 77 20 28 35 34 2d 39 30 20 64 65 67 72 65 65 |ew (54-90 degree| 00000b90 73 29 2e 20 20 49 66 20 79 6f 75 20 77 69 73 68 |s). If you wish| 00000ba0 20 74 6f 20 0a 73 65 65 20 62 6f 74 68 20 76 69 | to .see both vi| 00000bb0 65 77 73 20 73 69 6d 75 6c 74 61 6e 69 6f 75 73 |ews simultanious| 00000bc0 6c 79 20 73 69 6d 70 6c 79 20 72 75 6e 20 74 77 |ly simply run tw| 00000bd0 6f 20 63 6f 70 69 65 73 20 6f 66 20 73 74 61 72 |o copies of star| 00000be0 67 61 7a 65 72 21 0a 0a 51 75 69 74 20 69 73 20 |gazer!..Quit is | 00000bf0 73 65 6c 66 20 65 78 70 6c 61 6e 61 74 6f 72 79 |self explanatory| 00000c00 0a 0a 56 69 65 77 20 77 69 6e 64 6f 77 20 6d 65 |..View window me| 00000c10 6e 75 0a 0a 54 68 65 20 76 69 65 77 20 77 69 6e |nu..The view win| 00000c20 64 6f 77 20 6d 65 6e 75 20 70 72 6f 76 69 64 65 |dow menu provide| 00000c30 73 20 65 78 74 72 61 20 76 69 65 77 20 72 65 6c |s extra view rel| 00000c40 61 74 65 64 20 66 61 63 69 6c 69 74 69 65 73 0a |ated facilities.| 00000c50 0a 46 69 6e 64 20 6f 62 6a 65 63 74 20 61 74 74 |.Find object att| 00000c60 65 6d 70 74 73 20 74 6f 20 63 65 6e 74 72 65 20 |empts to centre | 00000c70 74 68 65 20 76 69 65 77 20 61 72 6f 75 6e 64 2c |the view around,| 00000c80 20 61 6e 64 20 70 6f 69 6e 74 20 74 68 65 20 6d | and point the m| 00000c90 6f 75 73 65 20 70 6f 69 6e 74 65 72 20 74 6f 2c |ouse pointer to,| 00000ca0 0a 74 68 65 20 63 68 6f 73 65 6e 20 6f 62 6a 65 |.the chosen obje| 00000cb0 63 74 2e 0a 53 75 62 2d 6d 65 6e 75 73 20 61 72 |ct..Sub-menus ar| 00000cc0 65 20 75 73 65 64 20 74 6f 20 63 68 6f 6f 73 65 |e used to choose| 00000cd0 20 74 68 65 20 74 79 70 65 20 6f 66 20 6f 62 6a | the type of obj| 00000ce0 65 63 74 2c 20 61 6e 64 20 74 68 65 6e 20 73 70 |ect, and then sp| 00000cf0 65 63 69 66 79 20 61 0a 70 61 72 74 69 63 75 6c |ecify a.particul| 00000d00 61 72 20 6f 63 63 75 72 72 65 6e 63 65 2e 20 4e |ar occurrence. N| 00000d10 6f 74 65 20 74 68 61 74 20 73 74 61 72 20 6e 61 |ote that star na| 00000d20 6d 65 73 20 6d 75 73 74 20 6d 61 74 63 68 20 74 |mes must match t| 00000d30 68 65 20 6e 61 6d 65 73 20 61 66 74 65 72 0a 74 |he names after.t| 00000d40 68 65 20 65 71 75 61 6c 73 20 73 69 67 6e 73 20 |he equals signs | 00000d50 69 6e 20 74 68 65 20 64 61 74 61 62 61 73 65 2c |in the database,| 00000d60 20 69 6e 63 6c 75 64 69 6e 67 20 74 68 65 20 63 | including the c| 00000d70 61 73 65 3b 20 74 68 65 73 65 20 67 65 6e 65 72 |ase; these gener| 00000d80 61 6c 6c 79 0a 73 74 61 72 74 20 77 69 74 68 20 |ally.start with | 00000d90 61 6e 20 75 70 70 65 72 20 63 61 73 65 20 6c 65 |an upper case le| 00000da0 74 74 65 72 2e 20 54 68 65 20 63 6f 6e 73 74 65 |tter. The conste| 00000db0 6c 6c 61 74 69 6f 6e 20 66 69 6e 64 65 72 20 77 |llation finder w| 00000dc0 69 6c 6c 20 66 69 6e 64 20 74 68 65 0a 66 69 72 |ill find the.fir| 00000dd0 73 74 20 73 74 61 72 20 69 6e 20 74 68 65 20 63 |st star in the c| 00000de0 6f 6e 73 74 65 6c 6c 61 74 69 6f 6e 2c 20 67 65 |onstellation, ge| 00000df0 6e 65 72 61 6c 6c 79 20 41 6c 70 68 61 2e 0a 0a |nerally Alpha...| 00000e00 53 68 6f 77 20 63 6f 6e 73 74 73 20 77 69 6c 6c |Show consts will| 00000e10 20 74 6f 67 67 6c 65 20 74 68 65 20 63 6f 6e 73 | toggle the cons| 00000e20 74 65 6c 6c 61 74 69 6f 6e 20 69 64 65 6e 74 69 |tellation identi| 00000e30 66 69 63 61 74 69 6f 6e 20 6f 70 74 69 6f 6e 20 |fication option | 00000e40 6f 6e 20 6f 72 20 6f 66 66 2e 0a 0a 5a 6f 6f 6d |on or off...Zoom| 00000e50 20 69 6e 20 61 6e 64 20 7a 6f 6f 6d 20 6f 75 74 | in and zoom out| 00000e60 20 61 6c 6c 6f 77 20 74 68 65 20 75 73 65 72 20 | allow the user | 00000e70 74 6f 20 75 73 65 72 20 74 6f 20 6f 70 74 69 6d |to user to optim| 00000e80 69 73 65 20 74 68 65 20 76 69 65 77 20 66 6f 72 |ise the view for| 00000e90 0a 64 65 74 61 69 6c 2e 20 46 61 69 6e 74 65 72 |.detail. 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These co| 000011f0 75 6c 64 20 62 65 20 65 78 74 72 61 63 74 65 64 |uld be extracted| 00001200 20 61 6e 64 20 75 73 65 64 20 77 69 74 68 0a 6f | and used with.o| 00001210 74 68 65 72 20 70 72 6f 67 72 61 6d 73 2e 20 20 |ther programs. | 00001220 53 6f 6d 65 20 72 6f 75 74 69 6e 65 73 20 28 73 |Some routines (s| 00001230 70 65 63 69 66 69 63 61 6c 6c 79 20 74 68 65 20 |pecifically the | 00001240 72 65 64 72 61 77 69 6e 67 20 61 6e 64 20 64 61 |redrawing and da| 00001250 74 61 62 61 73 65 0a 69 6e 74 65 72 70 65 74 65 |tabase.interpete| 00001260 72 29 20 68 61 76 65 20 62 65 65 6e 20 6f 70 74 |r) have been opt| 00001270 69 6d 69 73 65 64 20 74 6f 20 6d 61 6b 65 20 74 |imised to make t| 00001280 68 65 20 70 72 6f 67 72 61 6d 20 6d 6f 72 65 20 |he program more | 00001290 75 73 61 62 6c 65 2c 20 61 6e 64 20 73 6f 0a 6d |usable, and so.m| 000012a0 61 79 20 62 65 20 6c 65 73 73 20 72 65 61 64 61 |ay be less reada| 000012b0 62 6c 65 2c 20 62 75 74 20 74 68 65 20 6f 70 65 |ble, but the ope| 000012c0 72 61 74 69 6f 6e 20 6f 66 20 74 68 65 20 70 72 |ration of the pr| 000012d0 6f 67 72 61 6d 20 63 61 6e 20 62 65 20 73 65 65 |ogram can be see| 000012e0 6e 2e 0a 53 6f 72 72 79 20 61 62 6f 75 74 20 74 |n..Sorry about t| 000012f0 68 65 20 22 6d 61 6a 69 63 20 6e 75 6d 62 65 72 |he "majic number| 00001300 73 22 20 62 79 20 74 68 65 20 77 61 79 2e 20 48 |s" by the way. H| 00001310 61 70 70 79 20 73 74 61 72 67 61 7a 69 6e 67 21 |appy stargazing!| 00001320 0a 0a 42 75 67 20 46 69 78 65 73 20 61 6e 64 20 |..Bug Fixes and | 00001330 4e 65 77 20 66 65 61 74 75 72 65 73 20 6f 66 20 |New features of | 00001340 52 65 6c 65 61 73 65 20 49 49 20 28 56 65 72 73 |Release II (Vers| 00001350 69 6f 6e 20 37 2e 30 29 0a 20 23 20 56 65 72 74 |ion 7.0). # Vert| 00001360 69 63 61 6c 20 76 69 65 77 20 61 64 64 65 64 0a |ical view added.| 00001370 20 23 20 53 69 6d 75 6c 61 74 69 6f 6e 20 62 75 | # Simulation bu| 00001380 67 20 66 69 78 65 64 20 0a 20 23 20 73 69 6d 75 |g fixed . # simu| 00001390 6c 61 74 69 6f 6e 20 63 61 6e 20 6e 6f 77 20 62 |lation can now b| 000013a0 65 20 63 61 6e 63 65 6c 6c 65 64 0a 20 23 20 53 |e cancelled. # S| 000013b0 69 6d 75 6c 61 74 69 6f 6e 20 73 74 6f 70 73 20 |imulation stops | 000013c0 63 6c 6f 63 6b 20 74 6f 20 61 6c 6c 6f 77 20 69 |clock to allow i| 000013d0 6e 73 70 65 63 74 69 6f 6e 20 6f 66 20 66 69 6e |nspection of fin| 000013e0 61 6c 20 70 6f 73 69 74 69 6f 6e 73 0a 20 23 20 |al positions. # | 000013f0 42 75 67 20 69 6e 20 74 69 6d 65 20 72 65 66 65 |Bug in time refe| 00001400 72 65 6e 63 65 20 61 6e 64 20 50 6c 61 6e 65 74 |rence and Planet| 00001410 20 70 6f 73 69 74 69 6f 6e 73 20 66 69 78 65 64 | positions fixed| 00001420 0a 20 23 20 43 6c 6f 63 6b 20 6f 6e 2f 6f 66 66 |. # Clock on/off| 00001430 20 61 64 64 65 64 2c 20 77 69 74 68 20 75 73 65 | added, with use| 00001440 72 20 73 65 74 74 69 6e 67 20 66 72 6f 6d 20 6d |r setting from m| 00001450 65 6e 75 0a 20 23 20 4f 62 6a 65 63 74 20 73 65 |enu. # Object se| 00001460 61 72 63 68 20 6d 6f 75 73 65 20 70 6c 61 63 65 |arch mouse place| 00001470 6d 65 6e 74 20 62 75 67 20 66 69 78 65 64 0a 20 |ment bug fixed. | 00001480 23 20 4d 6f 6f 6e 20 70 6c 6f 74 74 65 64 20 61 |# Moon plotted a| 00001490 66 74 65 72 20 53 75 6e 20 66 6f 72 20 72 65 61 |fter Sun for rea| 000014a0 6c 69 73 74 69 63 20 65 63 6c 69 70 73 65 73 0a |listic eclipses.| 000014b0 20 23 20 4c 6f 6e 67 69 74 75 64 65 20 73 65 74 | # Longitude set| 000014c0 74 69 6e 67 20 62 75 67 20 66 69 78 65 64 0a 20 |ting bug fixed. | 000014d0 23 20 5a 6f 6f 6d 20 6f 75 74 20 72 65 64 72 61 |# Zoom out redra| 000014e0 77 69 6e 67 20 62 75 67 20 66 69 78 65 64 0a 20 |wing bug fixed. | 000014f0 23 20 50 72 6f 67 72 61 6d 20 54 69 64 69 65 64 |# Program Tidied| 00001500 0a 20 23 20 4e 65 77 20 49 63 6f 6e 20 74 6f 20 |. # New Icon to | 00001510 70 72 65 76 65 6e 74 20 63 6f 6e 66 75 73 69 6f |prevent confusio| 00001520 6e 20 77 69 74 68 20 72 65 6c 65 61 73 65 20 49 |n with release I| 00001530 20 0a 0a 53 74 65 76 65 20 45 6c 6c 77 6f 6f 64 | ..Steve Ellwood| 00001540 20 28 42 53 63 29 2c 20 53 79 73 74 65 6d 73 20 | (BSc), Systems | 00001550 65 6e 67 69 6e 65 65 72 2c 20 45 4f 20 43 6f 6d |engineer, EO Com| 00001560 70 75 74 65 72 20 4c 54 44 20 28 66 6f 72 6d 65 |puter LTD (forme| 00001570 72 6c 79 20 41 63 74 69 76 65 0a 42 6f 6f 6b 20 |rly Active.Book | 00001580 43 6f 6d 70 61 6e 79 29 2e 0a 0a 48 6f 6d 65 20 |Company)...Home | 00001590 61 64 64 72 65 73 73 3a 20 43 61 73 74 6c 65 20 |address: Castle | 000015a0 46 61 72 6d 2c 20 48 61 73 73 65 20 52 6f 61 64 |Farm, Hasse Road| 000015b0 2c 20 53 6f 68 61 6d 2c 20 4e 72 20 45 6c 79 2c |, Soham, Nr Ely,| 000015c0 20 43 61 6d 62 73 20 43 42 37 20 35 55 57 0a 54 | Cambs CB7 5UW.T| 000015d0 65 6c 3a 30 33 35 33 20 37 32 31 34 34 35 0a 0a |el:0353 721445..| 000015e0 50 2e 53 2e 20 54 68 61 6e 6b 73 20 61 67 61 69 |P.S. Thanks agai| 000015f0 6e 20 74 6f 20 45 4f 20 43 6f 6d 70 75 74 65 72 |n to EO Computer| 00001600 20 4c 54 44 20 28 43 61 6d 62 72 69 64 67 65 29 | LTD (Cambridge)| 00001610 20 66 6f 72 20 74 68 65 20 63 6f 6e 74 69 6e 75 | for the continu| 00001620 65 64 0a 75 73 65 20 6f 66 20 74 68 65 20 41 63 |ed.use of the Ac| 00001630 6f 72 6e 20 52 31 34 30 20 77 69 74 68 20 54 41 |orn R140 with TA| 00001640 58 41 4e 20 6d 75 6c 74 69 73 79 6e 63 20 6d 6f |XAN multisync mo| 00001650 6e 69 74 6f 72 2e 0a 0a 0a 0a 0a |nitor......| 0000165b
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