Top 10k strings from Space Scan (1985)(Macmillan Software).tzx
in <root> / bin / z80 / software / Sinclair Spectrum Collection TOSEC.exe / Sinclair ZX Spectrum - Utilities & Educational / Sinclair ZX Spectrum - Utilities & Educational - [TZX] (TOSEC-v2007-01-01) /
Back to the directory listing
4 s$(star)(30 4 s$(star)(29 3 m9,m16;"*": 3 White Dwarf 3 ;"starnames" 3 ;"glossary" 3 ;"csqbytes" 2 wrong=wrong+m1: 2 score=score+m1: 2 s$(x)(m25)): 2 s$(x)(m24);p$( 2 s$(x)(m23), 2 s$(x)(m2)=v 2 s$(star)(m23), 2 s$(star)(m2): 2 s$(star)(38 2 s$(star)(37 2 s$(star)(36 2 s$(star)(35 2 m21,m0;"Ans"; 2 m11,m25;"*": 2 m11,m14;"*"; 2 m10,m15;"*"; 2 Wezen 2 Wasat 2 Vega 2 The Sickle 2 The Kids 2 The Keystone 2 Supernova 2 Star Cluster 2 Sirrah 2 Sirius 2 Shaula(Sting) 2 Segin 2 Schedir 2 Scheat 2 Saiph 2 Ring Nebula M57 2 Rigel 2 Regulus 2 Reda 2 Red Giant 2 Pollux 2 Polaris(Pole Star) 2 Pleiades M45 2 Pherkard 2 Pherkad 2 Orion Nebula M42 2 Nebula 2 Muliphein 2 Mu Cephei 2 Mizar 2 Mirzam 2 Mirach 2 Merak 2 Menkalinan 2 Mekbuda 2 Mebsuta 2 Markab 2 M6 & 7 Star Clusters 2 M41 Star Cluster 2 M35 Star Cluster 2 M13 Globular Cluster 2 Light Year 2 Kochab 2 Hyades 2 Hassaleh 2 Great Nebula M31 2 Garnet Star 2 Galaxy 2 Furud 2 Epsilon Aurigae 2 Eclipsing 2 Dubhe 2 Dschubba 2 Double Cluster 2 Denebola 2 Deneb Okab 2 Deneb Cygni 2 Crab Nebula M1 2 Castor 2 Caph 2 Capella 2 Black Hole 2 Binary Star 2 Betelgeuse 2 Beta Tauri 2 Belt of Orion 2 Bellatrix 2 Antares 2 Aludra 2 Altair 2 Alshain 2 Alrai 2 Alphirk 2 Alhena 2 Algol 2 Algieba 2 Algenib 2 Alderamin 2 Aldebaran 2 Alcor 2 Albireo 2 Alamak 2 Adara 2 Acrab 2 ANDROMEDA & SQUARE OF PEGASUS262AQUILA (THE EAGLE) 274AURIGA (THE CHARIOTEER) 322CANIS MAJOR (THE GREATER DOG)334CEPHEUS 368CYGNUS WITH LYRA 384GEMINI (THE TWINS) 432HERCULES 492LEO (THE LION) 530ORION (THE HUNTER) 554PERSEUS WITH CASSIOPEIA 586SCORPIUS (THE SCORPION) 624TAURUS (THE BULL) 674URSA MAJOR (THE GREAT BEAR) 710URSA MINOR (THE LITTLE BEAR) 736 2 +(sorc*100 2 (a$(m1)(m1)="!" 2 ";s$(star)(m3 2 ";d$(q1)(m1 1 |z^t^jrfn] 1 x;" ";s$(x)(m3 1 x,m16;"}"; 1 x,m16;" ": 1 x,m10+z;"}": 1 x,m10+z;" ": 1 x,col;x;" ";s$(x)(m3 1 x+m4,m3;b$;x;" ";g$(x)(m1 1 w|fo@mem]i]h^iKgl^ 1 u$(m2)="like the keystone of an arch." 1 u$(m1)="A group of four stars shaped ": 1 the Milky Way 1 t$=" ": 1 stars formed in the same region at the same timeand held together by gravity."''" 1 starnames ' 1 spiral, globular or irregular."''" 1 space p 1 scr=scr+m1-(m4 1 s2,s3-move: 1 s$(x)(m25)=m5 1 s$(x)(m25)=m0 1 s$(star)(m25)): 1 s$(star)(m24);l$: 1 s$(star)(m24);"?" 1 s$(star)(m2))(m1 1 s$(star)(m1)) 1 s$(star)(31 1 s$(star)(1 1 s$(rnd)(25 1 q$(m3)="A mixture of both": 1 q$(m2)="Stars & other heavenly bodies": 1 q$(m1)="Constellations only": 1 p$="*.|@06~": 1 op\\\\\\qr 1 op\\\\\\\\qr 1 op\\\\\\\\\\qr 1 occur where two stars appear to be close becausethey lie in the line of sight inthe sky."'" 1 nu=(o$(t)<"0")+(o$(t)>"9"): 1 n2=m19*scr: 1 n1=n2-m18: 1 move=-m24: 1 m9,m8;"*"; 1 m9,m6;"M51 1 m9,m23;"*": 1 m9,m22;" "; 1 m9,m18;"."; 1 m9,m17;"The Keystone": 1 m9,m16;" ": 1 m9,m14;"."; 1 m9,m13;"*"; 1 m8,m7;"*"; 1 m8,m2;"(In Lyra)"; 1 m8,m25;"."; 1 m8,m23;"*"; 1 m8,m23;" ~": 1 m8,m19;"."; 1 m8,m12;"."; 1 m8,m10;"Nebula)"; 1 m8,m10;"*": 1 m7,m2;"Vega"; 1 m7,m21;"*"; 1 m7,m18;"*"; 1 m7,m12;".": 1 m6,m9;"*": 1 m6,m6;"*"; 1 m6,m25;"Aurigae": 1 m6,m23;"*"; 1 m6,m15;"*"; 1 m6,m10;"Space Scan"; 1 m5,m24;"Pleiades": 1 m5,m21;" "; 1 m5,m19;"Epsilon"; 1 m5,m16;"*"; 1 m5,m13;q$(m1)(m1 1 m5,m11;"{": 1 m5,m11;"*"; 1 m4;"Featuring: 1 m4,m6;"Macmillan Software"; 1 m4,m25;"M45"; 1 m4,m18;".": 1 m4,m0;"1O constellations can appear in any order.": 1 m3,m8;"*": 1 m3,m19;"*"; 1 m3,m16;"."; 1 m21,m8;" Still loading ": 1 m21,m0;"Type the number and press ENTER" 1 m21,m0;"S=move to next list";":P=printer";#1 1 m20,m20;"*=Regulus": 1 m20,m19;"*"; 1 m20,m12;"*"; 1 m2,m18;"."; 1 m1;b$;" "; 1 m19,x;" }": 1 m19,m16;"}";#1 1 m19,m15;"}"; 1 m19,m12;"}"; 1 m19,m0;" Well done! You are in the high score table. Type your name and press ENTER. Maximum=10 letters": 1 m18,m14;"} 1 m18,m14;"."; 1 m17,x;"} ": 1 m17,m15;"} 1 m17,m11;"\": 1 m17,m11;".": 1 m17);"?"'''''"Press the number of your choice " 1 m16,m23;"Star": 1 m16,m22;"Nebula M57": 1 m16,m18;"."; 1 m16,m15;"..."; 1 m16,m15;"*": 1 m15,m24;"(Sting)": 1 m15,m22;"Ring"; 1 m15,m18;"."; 1 m15,m17;"Orion Nebula": 1 m15,m16;"."; 1 m15,m14;"."; 1 m15,m12;"M7"; 1 m14,m6;"Press Y or N" 1 m14,m25;" "; 1 m14,m17;"M42"; 1 m14,m15;"------Shaula"; 1 m14,m11;"M6"; 1 m14,m10;"*"; 1 m14);" and"'q$(m2) 1 m13,m9;"."; 1 m13,m2;"with no constellations";''"3 ";q$(m3)(m1 1 m13,m25;"*": 1 m13,m21;"."; 1 m13,m17;"."; 1 m13,m17;"*"; 1 m13,m14;"Cluster": 1 m13,m0;"*"; 1 m12,m21;".": 1 m12,m14;"Double"; 1 m12,m12;"*"; 1 m12,m11;"."; 1 m12,m0;" ": 1 m11,m6;"Today's 5 highest scores": 1 m11,m13;"*"; 1 m11,m10;"*": 1 m10,m6;" Still loading ": 1 m10,m23;"."; 1 m10,m21;"."; 1 m10,m19;"*"; 1 m10,m17;"*"; 1 m10,m11;"*"; 1 m10,m10;"."; 1 m10,m0;"Press S to scroll the list of names which appear at the foot of the screen."'''"When you see the correct answer on the screen, press A.": 1 m10,m0;"Load the program as ""space""": 1 m10,m0;"Load the program as ""space""" 1 m10,m0;"Do you want to transfer this program to Microdrive?"; 1 m10,m0;"1 ";q$(m1);''"2 ";q$(m2); 1 m1,m0;"THE PLOUGH OR BIG DIPPER": 1 m1,m0;"Press S for star-map,R to return": 1 m1,m0;"Press A when you see the answer ": 1 m1,m0;" Press P to print, G to go on " 1 m1,m0;" To return to menu, press M ": 1 m1,m0;" Press G to go on " 1 m0;s$(n)(m3 1 m0;s$(d)(m3 1 m0;n;":";n$(n)(m1 1 m0;n$(d)(m1 1 m0;;sc;"%" 1 m0,m10;"STAR SEARCH": 1 m0,m10;"QUIZ"'''o$;" questions on:"''q$(cors): 1 m0,m0;n$(v)(m1 1 m0,m0;a$(m1);: 1 m0,m0;"To scroll list of names,press S ";#1 1 m0,m0;"More information? Press Y or N "; 1 m0,m0;"M=return to menu:C=choose a star" 1 m0,m0;" Your answer was wrong. Score= " ;#1 1 m0,m0;" Your answer was right! Score= ";#1 1 m0,m0;" Press P to print information ";#1 1 m0,m0;" ": 1 m0,-m12,m1: 1 m+m13,col+m21;h(m);"%" 1 l$="0000000000": 1 k$(rnd)="1": 1 k$(rnd)="1" 1 j{F(@o@v9+966q%q 1 j\\\\\\\\k 1 j\\\\\\\\\\k 1 j\\\\\\\\\\\\k 1 j$="000000000000000": 1 j$(rnd)="1": 1 j$(rnd)="1" 1 hoFR:\5v1b+ 1 h(a)=h(a-1 1 h$(n)="XXXXX ": 1 h$(m5,m10): 1 h$(m5)=y$: 1 h$(a)=h$(a-1 1 glossary 1 g$(gloss)(m22): 1 g$(gloss)(m12+z))(m1 1 g$(gloss)(m1 1 f$(m2,m20): 1 do not amalgamate 1 d$(q1)(m10)));: 1 d$(q1)(m10))); 1 d$(m7,m10): 1 csqmain 1 contain 1OOO'sof closely-packed stars.": 1 col=m13+(m3- 1 cnames 1 cb 2 1 c m 1 blue 4brilliant9green 5orange 6red 3white 5yellow 6B 1 bc\\\\\\\\\\\\de 1 and can only be seen through a large telescope."; 1 a$(m1)(m1)="*" 1 Your final score = ";score;" out of ";quiz''"which gives you: "; 1 XXXXX XXXXX XXXXX XXXXX XXXXX 1 Winking Demon 1 White Dwarfs are small and very dense. A matchboxful of White Dwarf material would weigh many tons.": 1 Where possible, these are"'"illustrated with vivid graphics,"'"for example, look up the star "'"Algol. "''"There's also a quiz to test yourastronomical knowledge." 1 When the powerful inner forces of a star go out of control, a tremendous explosion, called a 1 Use SPACE SCAN to explore 15 "'"major Northern constellations."''"Discover their principal stars "'"and nebulae,and learn about some"'"of their important features." 1 Type the number and press ENTER."''"Type 0 and ENTER for Menu." 1 Type 0 & ENTER to return to menu": 1 This section explains some of the terms used in this program. 1 There are 75 stars, nebulae and other features which you can askthe program to display."''"All Light Year distances given are approximate.": 1 The distance which light travelsthrough space in a year. Since light travels at about 186,000 miles per second, a light year is approximately 588O thousand million miles."''" 1 The diameters of Red Giants can be between 1O and 3OO times thatof the sun.": 1 Select your choice for display. 1 See CRAB NEBULA in Star Search.": 1 Search for and display details of the star of your choice. 1 STAR SEARCH"; 1 SPACE SCAN": 1 SPACE SCAN PROGRAM OPTIONS": 1 Q.";Q;" ";f$(sorc): 1 Others absorb or obscure light from stars behind them and look like great black shapes against a starry background."''" 1 Optical doubles 1 Open clusters: 1 None have been spotted yet but there is evidence to suggest that astronomers will soon find one. See Epsilon Aurigae." 1 Nebulae are huge clouds of dust and gas in space. Some glow, lit by stars inside them."''" 1 N[MNVZUT{H 1 Most of the stars we can see with the naked eye are in our own galaxy, 1 MACMILLAN SOFTWARE"; 1 M16,M6;"."; 1 M1 (Crab"; 1 M 1 It has a companion, Sirius B, which is a 1 Identify constellations and/or stars and other features. 1 How many questions do you want to answer?"; 1 Globular clusters 1 GLOSSARY SECTION: 1 Do you want questions on:"; 1 Distance in Light Years: "''" 1 Distance in Light Years: 1 Created with Ramsoft MakeTZX 1 Constellations only Stars & other heavenly bodies A mixture of both T 1 Clusters are groups of stars andcan be 1 Choose by pressing the number"''" 1 CONSTELLATION CHOICE"''"Type the number & press ENTER ": 1 Bright nebulae are often the birthplaces of new stars.": 1 Beta Tauri"; 1 At the end of its life, when a star has burnt up most of its hydrogen, it can expand and coolto become a 1 Astronomers use a light year as a convenient measure to describethe vast distances that separateobjects in the Universe.": 1 Andromeda Galaxy 1 An eclipse is created when one body prevents the light from another from reaching the observer. 1 About 46% of all known stars arebinaries.": 1 A system of millions of stars, bound together by their own gravity."''"Galaxies are classed by their appearance as 1 A group of four stars shaped like the keystone of an arch. O 1 A White Dwarf can be created when a star has almost exhaustedits reserves of nuclear energy. "''" 1 ;''''''u$(m1)'u$(m2): 1 ;"and M.A.HARGREAVES": 1 ;"The Belt of"; 1 ;"SPACE SCAN": 1 ;"Known also as the 1 ;"Brightest star in the sky,Siriusis due south at 1O p.m. on the 1 Feb. It is many times more luminous than our sun."''" 1 ;"Beta Persei": 1 ;", the Dog Star": 1 ;" Loading program - approx.3 mins": 1 ;" PROGRAM STILL LOADING "; 1 ;" Press G to go on " 1 : 2 stars rotating"'"about a common centre of gravitysometimes called a double star."''" 1 : The dense remains"'"of a collapsed star with gravity"'"so strong that not even light"'"can escape. It will attract and"'"consume any material coming"'"within its pull."''" 1 6F?OCWFO`+f1lsmmqHt1~= 1 5: GLOSSARY"'" 1 4: QUIZ"'" 1 3: STAR SEARCH"'" 1 2: CONSTELLATION CHOICE"'" 1 1: CONSTELLATION SPOTTER"'" 1 15 constellations in ABC order." 1 10? 20? 50?"; 1 ."''"These stars have a small dense core and, surrounding the core, a vast envelope of cooler gas which glows red."''" 1 . It isa huge spiral about 1OO,OOO Light Years across and contains about 1OO,OOO million stars.": 1 -m5,m5,m3: 1 -m5,-m5,-m3: 1 -m4,-m10,m3 1 -m25,-m10: 1 -m12,m5,m2: 1 -m1,m10,-m2 1 ,m6;m;". ";h$(m); 1 , and is a spiral galaxy similar to our own, it is the most remote object which is visible to the naked eye.": 1 +(gloss*50 1 +(cors*100 1 )="Which heavenly body?": 1 )="Which constellation?": 1 );s$(x)(m3 1 ),"!5425","*" 1 )+", whose","!5070","left side is due south around 23","November at 8 pm. See above the","Chain, the spiral galaxy M31.","!5080","*" 1 (v*m10)+2000 1 (v*m10)+1000 1 (star/m10)): 1 (score*(100 1 ''"Three hot white stars in the centre of Orion - Alnilam, Alnitak and Mintaka.": 1 ''"This is visible to the naked eyeand is a magnificent sight when seen through binoculars.": 1 ''"The nearest giant to our Sun.": 1 ''"The brightest in Orion, this giant star is thousands of timesbrighter than our own Sun.": 1 ''"Over 200 stars visible through binoculars.": 1 ''"One of the brightest clusters, M13 is 22,500 light years away. It contains over 300,000 stars.": 1 ''"It is the fifth brightest star in the sky.": 1 ''"Currently the visible star"'"nearest to the North Pole.": 1 ''"Alcor forms a double star with Mizar, which is itself a double."; 1 ''" Constellations in SPACE SCAN": 1 '"Wezen is an optical double.": 1 '"Wasat is an optical double.": 1 '"This nebula consists of a shell of gas surrounding a central hotstar.": 1 '"This is in the constellation of PERSEUS, shown in this program with CASSIOPEIA.": 1 '"This is in the constellation of PEGASUS, shown in this program with ANDROMEDA.": 1 '"This is in the constellation of LYRA, shown in this program withCYGNUS.": 1 '"This is in the constellation of CYGNUS, shown in this program with LYRA.": 1 '"This is in the constellation of CASSIOPEIA, shown in the programwith PERSEUS.": 1 '"This is in the constellation of ANDROMEDA, shown in this programwith PEGASUS.": 1 '"This is also known as the 1 '"This is a super-giant but its companion is a mystery. Some astronomers think that it might be a black hole.": 1 '"The brightest star in Leo.": 1 '"The brightest star in Cepheus.": 1 '"The Crab Nebula is the remains of a supernova that appeared in 1O54 A.D. and is a glowing mass of gas about 12 light years across. When the explosion was observed, it was so bright that it could be seen by day.": 1 '"See the constellations:" 1 '"See information section on the constellation.": 1 '"See also Garnet Star.": 1 '"Not just a simple binary but a triple system.": 1 '"Known as the Great Nebula in Orion, this is a giant dust cloud and the brightest nebula in the sky.": 1 '"Castor is not one star but a","complicated group. A planet in orbit in its system would have six bright suns in its sky.": 1 '"Beta Tauri is, of course, in theconstellation TAURUS but is associated with Auriga and shownwith it in this program.": 1 '"An optical double, see Glossary Section 1.": 1 '"Algol seems to ""wink"". This is caused by its companion passing it, forming an eclipsing binary."; 1 '"A variable double star which will become the Pole Star in about 2600 years' time.": 1 '"A sickle-shaped line of stars, forming the head of the Lion, giving the constellation its name." 1 '"A large red star with a small blue companion, it has a diameter of about 250 million miles."; 1 '"A huge orange-red star with a diameter of between 3OO and 35O million miles.": 1 '"A bright star with fainter starson either side.": 1 '"A bright star surrounded by the cluster of the Hyades. It has a diameter of 31.2 million miles.": 1 '"A bright star cluster around Aldebaran.": 1 "blue 4","brilliant9","green 5","orange 6","red 3","white 5","yellow 6" 1 "Whilst not spectacular to the","naked eye,HERCULES contains many","fine double stars.M13,a globular","cluster, looks like a circular","cloud through binoculars but is","a magnificent sight through a","large telescope.","!5420","Close to M13 is The Keystone,",u$(1 1 "Verifying program": 1 "URSA MINOR (THE LITTLE BEAR)","Polaris, the Pole Star is almost","exactly above the Earth's North","Pole. For centuries, sailors","navigated by Polaris, by using ","it to work out their latitude." ,"!5755" 1 "URSA MAJOR (THE PLOUGH) can be","seen from Britain on any starry","night as, being far North, it","never sets." 1 "The shape of a lion can be ","made out, looking west.","!5471","*" 1 "The most famous star cluster of","all is M45, the Pleiades, also","known as the Jewel Box or the 7","Sisters. Binoculars will reveal","hundreds of brilliant blue stars.","!5660","*" 1 "The double star, Mizar & Alcor","is said to have been used by","Arab astronomers,long ago, as","an eyesight test." 1 "The brightest star, is Deneb.","!5310","With a telescope,Albireo,is seen","as a magnificent gold and blue","double star.","!5320","*" 1 "The Garnet Star was a favourite","of Sir William Herschel who","gave it that name.It can be seen","through binoculars and is a rich","claret colour.","!5270","*" 1 "The Chain of ANDROMEDA connects","!5060","to the "+n$(v,13 1 "The 3 middle stars are known as","the Belt of Orion and point to","the bright star Sirius in Canis","Major (not shown here).","!5520" 1 "TAURUS:Follow Orion's Belt up &","bear right to find Aldebaran","- a bright orange-red star. ","!5655","Close by is the bright open"," cluster called The Hyades." 1 "Still loading" 1 "See also Mu Cephei.": 1 "Saving program": 1 "SCORPIUS, although not seen at","its best from northern latitudes","is due south at 11 pm on 3 July." 1 "PERSEUS & CASSIOPEIA: the most","notable star in Perseus is its","second brightest, Algol.","!5555","It has a companion, too faint","to see, but which eclipses it","once every 2.87 days, when it ","becomes much dimmer for 5 hours." 1 "ORION dominates the winter sky,","At 7 pm, on 1 March, it is due","south." 1 "Make sure there is a cartridge in the Microdrive";';"Press 1 to go on" 1 "LEO is best seen in Spring, and","is due south at 9 pm around ","10 May." 1 "Kochab, the 2nd brightest star","is yellow and appears brightest","in moonlight rather than in ","complete darkness.","!5770","*" 1 "Gemini has one of the brightest","star clusters,M35,visible to the","naked eye - you need binoculars","to see individual stars.","!5360","*" 1 "Cassiopeia has the shape of a W.","!5560","It is a beautiful group,rich in","stars, high in the sky,on the ","opposite side of Polaris from","Ursa Major." 1 "CYGNUS & LYRA:Cygnus dominates","the summer sky of Britain, and","is due south at 9 pm about","2O Sept. In the USA and Canada","it is called The Northern Cross." 1 "CEPHEUS is near the Pole Star,","and can be seen from Britain on","any starry night. It is a like a rough sketch of a ","house with a steep roof.","!5255" 1 "CANIS MAJOR has the brightest","star in the sky, Sirius - see","Star Search section.","!5200" 1 "Between Perseus and Cassiopeia ","is the famous Double Cluster.","*" 1 "Betelgeuse is a Red Giant.","!5510","If it occupied our Sun's place","its globe would reach beyond the","the orbits of Earth and Mars." 1 "Best identified by its two main","stars Castor and Pollux, GEMINI","is due south at 10 pm, 5 Feb.","!5355","Castor consists of a complicated","group of stars.","!5370" 1 "Beneath the Belt is the Orion ","Nebula, M42.","!5530","This shows up well through","binoculars.","*" 1 "Below Sirius is M41, a globular","cluster of stars.","!5230","*" 1 "As there is little interstellar","dust and gas in this area it is","said to have 'galactic windows'","through which, using binoculars,","distant galaxies can be seen","between Regulus and Denebola." 1 "Antares (Alpha Scorpii) is a red","giant and one of the largest","stars known (see Star Search","section)." 1 "Algieba is seen as a fine yellow","and orange double star, when","viewed through a telescope.","!5470" 1 "AURIGA, the Charioteer, is best","seen in winter, high in the sky, ","above Orion and Taurus. It is","roughly circular and easily","identified by the bright yellow","star, Capella." 1 "AQUILA: the brightest star,","Altair, forms the southern apex","of what Patrick Moore has called","the ""summer triangle"",with ","Deneb in Cygnus & Vega in Lyra." 1 ";s$(star)(31 1 "!5710","The stars, Merak and Dubhe, are","sometimes called 'The Pointers'","because they lead the eye to","Polaris, the Pole Star, in the","constellation URSA MINOR.","!5720","*" 1 "!5610","There are some wonderful star","clusters which can be seen with","binoculars, notably M6 and M7.","*" 1 "!5160","At the top is Epsilon Aurigae"," - see Star Search section.","!5170","*" 1 "!5150","3 fainter stars, known as The","Kids, form a triangle to the","right of Capella." 1 "!5100","Aquila is in the midst of the","Milky Way and rich in star","fields.","*" 1 " ";n$(x)(m1 1 can take place."''"Most of the outer layers of the star are blown away causing a brilliant burst of light and often leaving a small remnant of the original star."''" 1 Type the number and press ENTER 1 Stars can eclipse each other and when this happensto binary stars they are known as ""eclipsing binaries"".": 1 LOADING ": 1 BLACKBOARD SOFTWARE LTD : 1 1985 Blackboard Software Ltd. and M. A. Hargreaves"; 1 1985 BLACKBOARD SOFTWARE"; 1 M6 = 1500 M7 = 550": 1 P 1 1