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Instruction Manual 7" LX200 Maksutov-Cassegrain Telescope 8", 10", and 12" LX200 Schmidt-Cassegrain Telescopes Meade Instruments Corporation World's leading manufacturer of astronomical telescopes for the serious amateur. 6001 OAK CANYON, IRVINE, CALIFORNIA 92618-5200 U.
In the Schmidt-Cassegrain design of the Meade 8", 10", and 12" models, light enters from the right, passes through a thin lens with 2-sided aspheric correction ("correcting plate"), proceeds to a spherical primary mirror, and then to a convex aspheric secondary mirror.
¬ WARNING! ¬ Never use the LX200 telescope to look at the Sun! Looking at or near the Sun will cause instant and irreversible damage to your eye. Eye damage is often painless, so there is no warning to the observer that damage has occurred until it is too late.
Contents 7" LX200 Maksutov-Cassegrain Telescope 8", 10", & 12" LX200 Schmidt-Cassegrain Telescope Introduction 5 1. What is the LX200? An Overview 5 a. Heavy-Duty Mounts 5 b. Built-in 64,359 Object Library 5 c. Altazimuth Mode Operation 5 d.
INTRODUCTION As a new LX200 owner, you are preparing for a journey into the universe with the most advanced amateur telescope ever produced. The advent of this instrument is the culmination of twenty .
celestial software library; 25 ft. power cord and adapter for telescope operation from 115v.AC; 8 x 50mm viewfinder; eyepiece-holder and diagonal prism (1.25"); Series 4000 SP26mm eyepiece; variable-height field tripod; operating instructions. d.
TELESCOPE ASSEMBLY Use the following steps to assemble your telescope. NOTE: If the section is not applicable to all LX200 models, it is noted at the beginning of each section.
2. Mounting the Viewfinder Each 7", 8", 10", and 12" LX200 telescope is supplied as standard equipment with an 8x50mm straight-through viewfinder. The bracket for this viewfinder is packed separately from the finder itself, and 6 black nylon thumbscrews for Collimation are pre- threaded into the viewfinder bracket.
QUICK START To utilize all the features of the telescope, it is necessary to enter some information into the telescope's computer memory, and learn the menu structure of the keypad hand controller, which is described in the rest of this manual.
The LX200 can also be moved manually with the R.A. and Dec. locks released, or as described above only. The Declination manual slow-motion knob (1, Fig.4) is non-functional when power is supplied to the telescope. When the power is "on", only use the N, S, E, and W keys on the keypad hand controller.
8. Press ENTER to complete the site information input. The display will go back to Display 3. 9. Press MODE to go back to Display 2. 10. Press MODE again to go back to Display 1. It is important to note that the longitude standard used in the LX200 starts at 0 degrees in Greenwich U.
3. Loosen the R.A. lock (7, Fig. 1) and rotate the telescope so that the R.A. pointer (9, Fig. 1) and the HA pointer (16, Fig. 1) are approximately in line with each other. This will position the fork arms so that they are parallel to the power panel (11, Fig.
2. Telescope Position. The first display shows the RA and DEC (telescope position in stellar coordinates) and the second display (accessed by pressing the ENTER key) shows the telescope position in ALTAZ coordinates.
THE LX200 KEYPAD HAND CONTROLLER Designed to make you a better astronomer, the integration of optics, mechanics, electronics, and software in the LX200 Maksutov Cassegrain or Schmidt Cassegrain Telescope is easily mastered. So easy, in fact that the telescope becomes a natural extension of the observer.
7. FOCUS Key The FOCUS key (9, Fig. 6) allows 2 speed electric focus control of the optional Meade #1206 Electric Focuser (or equivalent corded electric focusers such as the Meade Model #1200A).
5. CCD Connector The CCD Port (10, Fig. 7) allows direct interface from popular aftermarket CCD autoguiding/imaging cameras with their compatible connecting cables to accomplish autoguiding for non- attended astrophotography. The CCD cameras effectively watch a star and detect slight movements.
options, which are; ALTAZ, POLAR, and LAND. Assuming that you have already entered correct local time, latitude, and longitude (see QUICK START, page 9) you are ready to choose a particular type of alignment, by pressing the NEXT or PREV key to run the arrow beside the desired option of ALTAZ, POLAR, or LAND, and then pressing the ENTER key.
side of the keypad. Altazimuth coordinate readings can still be displayed in the coordinates mode (see MODE 2, page 22). Refer to QUICK START (page 9) for the LAND menu option, for full operating procedures.
9. HI-PRECISION: The High-Precision Pointing feature of LX200 allows for very precise pointing of the telescope. By incorporating the unique LX200 SYNC command, 0.3 arc- sec resolution encoders, and high-speed DC servo motors, observers can now place objects in the telescope's field of view with 1 arc-minute or better pointing accuracy.
step c, above. Press ENTER when the number is entered. e. Check the time delay as described in step b. If there is a delay, increase the compensation number.
menu selection, the OBJECT INFORMATION menu selection, or the FIELD menu selection. 4. PARAMETERS: It is here that you can edit the Press ENTER to find eight options which can be reviewed by scrolling through this menu selection using the PREV or NEXT key.
in a given eyepiece while in the FIELD menu. At power up the RADIUS menu file option is set to 15 arc minutes, the radius of 1/2 a degree (30 arc minutes), which is about the proper setting for a 26mm eyepiece used in an 8" f/10 LX200.
FREQ RATE DESCRIPTION NOTES 60.1 Hz Q Sidereal rate; Quartz setting Default rate at power up. Gives sidereal frequency accuracy to ±.005%; Best for astrophotos 60.0 Hz Solar and planetary rate Average rate for tracking planets; Actual rates vary due to retrogrades, oppositions, etc.
MAGNIFICATION AND FIELD OF VIEW 1. Magnification The magnification (power) of the telescope depends on two characteristics: the focal length of the main telescope and the focal length of the eyepiece used during a particular observation.
APPENDIX A: EQUATORIAL WEDGE There are two equatorial wedges used on Meade LX200 telescopes. Please read the section, below, that applies to your telescope. 1. 8" Equatorial Wedge (For 7" and 8" LX200) The equatorial wedge permits use of the 8" LX200 telescope in an astronomical, or "equatorial," mode.
the tilt-plate. If the main crossbar of the DLA is already tightened into place this will inhibit your installation of the tilt- plate. You will therefore see that by re/easing the screws on the ends of the DLA crossbar your installation of the wedge tilt- plate will be facilitated.
Thread one of these knobs (or screws, as appropriate) partially into the hole on the underside of the drive base, located at the curved-end of the drive base (4, Fig. 12). This knob or screw should be threaded in about 3 full turns, not fully threaded into the hole.
c. Finding True North The Magnetic Compass is now ready to use. Just follow these simple steps for a quick and easy azimuth alignment: 1. Loosen the knob/compass slightly. This allows for rotation of the equatorial wedge under the knob/compass (Fig. 17).
APPENDIX B: EQUATORIAL USE 1. Celestial Coordinates Celestial objects are mapped according to a coordinate system on the Celestial Sphere, an imaginary sphere surrounding Earth on which all stars appear to be placed. This celestial object mapping system is analogous to the Earth-based coordinate system of latitude and longitude.
As an aside procedure, during your first use of the telescope, you should check the calibration of the Declination setting circle (3, Fig. 1), located at the top of each side of the fork. After performing the polar alignment procedure, center the star Polaris in the telescope field.
APPENDIX C: LX200 ALIGNMENTSTAR LIBRARY AND STAR CHARTS: 1. Alignment Stars The LX200 utilizes 33 bright and well known stars to calibrate the telescope's Object Library in the ALTAZ and POLAR alignments.
2. Star Charts ( for Northern Hemisphere Observers) 32.
33.
APPENDIX D: LX200 64,359- OBJECT LIBRARY 1. The LX200 64,359-Object Library The LX200 64,359-Object Library is a collection of the most studied and fantastic objects in the sky. It includes: • 15,928 SAO (Smithsonian Astrophysical Observatory) Catalog of Stars: All stars brighter than 7th magnitude.
The following types are distinguished in the CNGC: TYPE LEGEND DESCRIPTION 0 None Unverified Southern Object 1 OPEN Open Cluster 2 GLOB Globular Cluster 3 DNEB Diffuse Nebula 4 PNEB Planetary Nebula (.
MAG TYPE & DESCRIPTION ALT NAME Q TAGS COMMON NAME/COMMENTS 0045 00 14.0 -2310 486 10.4 GALAXY S- IV-V UGCA4 C5ST 8.1x5.8 0055 00 15.1 -39 13 1944 8.2 GALAXY SBm: PEC EMISSION b5ST 32.4x6.5 0104 0024.1 -7204 1854 4.0v GLOB CLUS sp=G3 47Tuc B2ST 47Tuc 16kly 0129 00 29.
CNGC Catalog (continued) Q TAGS COMMON NAME/COMMENTS 1746 05 03.6 +2349 2520 6.1p OPEN CLUS c1 ST 1763 04 56.8 -6624 1500 8.3 OPEN CLUS + ENEB IN LMC BFS 1807 05 10.7 +1632 1020 7.0v OPEN CLUS 01 ST 1817 05 12.1 +1642 960 7.7v OPEN CLUS c1 ST 1820 05 03.
CNGC Catalog (continued) Q TAGS COMMON NAME/COMMENTS 2437 0741.9 -1449 1620 6.1v OPEN CLUS sp=B8 CNGC 2437 C 1 ST M46 5400ly (+CNGC 2438 PN) 2447 07 44.6 -2352 1320 6.2v OPEN CLUS + DNEB CNGC 2447 D6ST M93 Includes dark nebula 2451 07 45.4 -3758 2700 2.
CNGC Catalog (continued) Q TAGS COMMON NAME/COMMENTS 4349 1224.2 -61 54 960 7.4v OPEN CLUS c 1 ST 4374 1225.1 +1253 300 9.3 GALAXY E1 UGC 7494 C5ST M84 5.0x4.4 Near M86 4382 1225.5 +18 11 426 9.2 GALAXY Ep 2-SYS UGC 7508 CAST M85 7.1x5.2 4395 1225.8 +3332 774 10.
Q TAGS COMMON NAME/COMMENTS 5927 5986 6025 6067 1528.0 1546.1 1603.7 16 13.3 -5040 - 3746 - 6030 -54 13 720 588 720 780 8.3v 7.1v 5.1v 5.6v GLOBCLUS GLOBCLUS OPEN CLUS OPEN CLUS sp=B3 b2ST b2 ST c 1 ST c 1 ST 4700ly 6087 16 18.9 -5754 720 5.4v OPEN CLUS c 1 ST 6093 16 17.
CNGC Catalog (continued) Q TAGS COMMON NAME/COMMENTS 6981 20 53.5 -12 33 354 9.4v GLOB CLUS CNGC 6981 D2ST M72 6994 20 59.0 -1237 168 8.9p OPENCLUS CNGC 6994 D 1 ST M73 7000 21 01.8 +44 12 7200 6.6 DIFFENEB Hll b3ST North American Nebula 3kly 7009 21 04.
DEC SIZE MAG TYPE & DESCRIPTION * 1 00 08.3 +2906 2.1v STAR B8.5p IV:( Hg+Mn) Alpha And 8 ST Alpheratz * 2 00 09.2 +59 10 2.3v STAR F2 III-IV Beta Cas 8 ST Caph * 3 00 13.2 +15 12 2.8v STAR B2 IV Gamma Peg 8 ST Algenib * 4 00 25.7 -77 15 2.8v STAR G1 IV Beta Hyi 8 ST * 5 00 26.
STAR Catalog (continued) DEC SIZE MAG TYPE & DESCRIPTION Q TAGS COMMON NAME/COMMENTS *61 06 22.9 +2231 2.8v STAR M3 Illab Mu Gem 8ST Tejat Posterior *62 0622.7 -1758 2.0v STAR B1 ll-lll Beta CMa 8ST Murzim *63 06 24.0 -5242 -0.7v STAR A9 II Alpha Car 8ST Canopus *64 06 37.
STAR Catalog (continued) DEC SIZE MAG TYPE & DESCRIPTION *121 1226.6 -6306 50 1.3v STAR B0.5 IV + B1 Vn Alpha Cru A 9 ST AcruxA B=1.7 *122 1226.7 -6307 50 1.7v STAR B1 Vn + B0.5 IV Alpha Cru B 9 ST Acrux B A=1 .3 *123 1229.9 -1631 240 3.0v STAR B9.
STAR Catalog (continued) DEC SIZE MAG TYPE & DESCRIPTION Q TAGS COMMON NAME/COMMENTS *181 1641.3 +31 36 11 2.8v STAR G1 IV + G7 V Zeta Her AB 9ST B=5.5 *182 1648.7 -6902 1.9v STAR K2 lib - Ilia Alpha TrA 8 ST Artia *183 1650.2 -34 17 2.3v STAR K2 III Epsilon Sco 8ST *184 1651.
STAR Catalog (continued) DEC SIZE MAG TYPE & DESCRIPTION Q TAGS COMMON NAME/COMMENTS *241 *242 *243 - 244 *245 22 05.8 22 08.3 22 18.6 22 42.7 2243.
STAR Catalog (continued) DEC SIZE MAG TYPE & DESCRIPTION Q TAGS COMMON NAME/COMMENTS *301 1226.6 -6306 47 1.6 STAR 1.6:2.1 @114 Alpha Cru 9ST 1943 White:White '302 1235.1 +1822 202 5.2 STAR 5.2:6. 8 @271 ADS 8600 9 ST 1963 Yellow:vBlue *303 1241.
ALT NAME Q TAGS COMMON NAME/COMMENTS M 1 M 2 M 3 M 4 M 5 05 34.5 21 33.5 1342.3 1623.7 15 18.6 +2201 - 0050 +2823 - 2631 +0205 360 774 972 1578 1044 8.
M (Messier) Catalog (continued) ALT NAME Q TAGS COMMON NAME/COMMENTS M 61 1222.0 +0428 360 9.7 GALAXY Sc I 2-SYS UGC 7420 DAST M61 6.0x5.5 Face-On M62 1701.3 -3007 846 6.6v GLOBCLUS OBLATE CNGC 6266 D2ST M62 Non-symmetrical M 63 13 15.8 +42 02 738 8.6 GALAXY Sb+ II UGC 8334 C5ST M63 12.
APPENDIX E: MAINTAINING YOUR LX200 1. Keeping Your Telescope Clean Prevention is the best recommendation that a telescope owner can follow to keep astronomical equipment in top working order. Proper measures taken during observation and when storing equipment between observing runs can add many years of trouble free use.
environmental pollutants, or temperature changes reacting with the interior paint, causing outgassing or water condensation, or combinations thereof. It is possible to clean the interior of the optical system yourself or to have it done professionally.
d. Turn the set screw that you found with the pointing exercise while looking in the eyepiece. You will notice that the star image will move across the field. If while turning, the out-of- focus star image flies out of the eyepiece field, then you are turning the screw the wrong way.
APPENDIX F: LX200 PERSONAL COMPUTER CONTROL Remote operation of a computerized telescope has only been a fanciful dream for most amateur astronomers. The realization of fully controlling a telescope through a personal computer has previously been a staggering proposition involving high monetary cost and expert knowledge of software and hardware.
PC keyboard, this will move the LX200 North, South, East, or West respectively. Press the space bar on the PC keyboard to stop. Press X to exit the program.
Command : Sg DDD*MM# Returns Ok Sets the longitude of the currently selected site. Command :GG# Returns sHH# Gets the offset from Greenwich Mean Time. Command :SG sHH# Returns Ok Sets the offset from Greenwich Mean Time. Command :W1# :W2# :W3# :W4# Returns Nothing Sets the current site number.
Gefs the brighter ( Gb) or fainter ( Gf) magnitude limit for the FIND operation. Command : Sb sMM.M# : Sf sMM.M# Returns Ok Sets the brighter ( Sb) or fainter ( Sf) magnitude limit for the FIND operation. Command :GI# : Gs# Returns NNN'# Gefs the larger ( Gl) or smaller (Gs) size limit for the FIND operation.
4. LX200 Demo Program The RS-232 interface communicates with your computer at 9600 Baud Rate, Parity = None, 8 Data Bits, 1 Stop Bits. For those who are familiar with programming, the LX200 Command Set is written in ASKII character format and can be used to write your own programs.
59 REM KEYS IFkey$ = CHR$(119 )THEN GOSUB senddir: REM a$ = "#: Mw#" IFkeyS = CHR$(101 )THEN GOSUB senddir: REM a$ = "#: Me#" IF key$ = CHR$(110) THEN GOSUB senddir: REM a$ = ".
60 OBDRAW: LOCATE 6, 31: PRINT " OBJECT INFORMATION"; LOCATE 7, 31: PRINT "Object: "; LEFT$( info$, 9); LOCATE 8, 31: PRINT "Rating: "; MID$( info$, 10, 7); LOCATE 9, 31:.
61 KEYS: PRINT #1,"# :RC#" LOCATE 24, 1: PRINT" LOCATE 24, 34: PRINT CHR$(219); CHR$(178); CHR$(176); CHR$(176); CHR$(178); CHR$(219); RETURN KEY6: PRINT #1, "# :RG#" LOCATE 2.
Telescope Optical Design 7" LX200 f/15 Maksutov-Cassegrain Catadioptric 8" LX200 f/6.3 Schmidt-Cassegrain Catadioptric 10" LX200 f/6.3 Schmidt-Cassegrain Catadioptric Clear Aperture 178mm (7") 203mm (8") 254mm (10") Primary Mirror Diameter 194mm (7.
63 Telescope Ophcai Design 8" LX200I/10 an-Schmidt-Cassegrain Catadioptric 10" LX200f/10 Schmidt-Cassegrain Catadioptric 200 f/10 Schmidt-Cassegrain Catadioptric Clear Aperture 203mm (8") 254mm (10") 305mm (12") Primary Mirror Diameter 209.
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Operating Instructions Meade Standard Field Tripod For use with the 7" LX200 Maksutov-Cassegrain, 8" LX200 and 10" LX200 Schmidt-Cassegrain, and 4" and 5" ED APO Telescopes The Standard Field Tripod is supplied as a completely assembled unit, except for the spreader bar (4, Fig.
Operating Instructions Meade® 18-volt DC Power Supply For Use with Meade LX200 Model Telescopes INTRODUCTION Meade LX200 model telescopes are now supplied with 18-volt DC systems. This higher voltage allows for smoother slewing at high speeds and more reliable telescope operation.
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