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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. Terrestrial Operation 5
e. Keypad and Power Panel Functions 5
2. Standard Equipment 5
Unpacking and Inspection 6
1. What You Should Have 6
2. Please Look Everything Over 6
3. Inspecting the Optics 6
4. Caution: All LX200 Owners 6
5. Caution: 10" and 12" LX200 Owners 6
6. Keypad Version Number 6
Telescope Assembly 7
1. The Field Tripod 7
2. Mounting the Viewfinder 8
a. Attaching the Viewfinder 8
b. Focusing the Viewfinder 8
c. Collimating the Viewfinder 8
3. Attaching the Diagonal Mirror and Eyepiece 8
4. Collimation 8
5. 12" Tube Swing-Through Limits 8
6. 7" Tube Swing-Through Limit 8
7. Maksutov Fan 8
Quick Start 9
1. Using the LX200 Manually 9
2. Using the LX200 in LAND 9
3. Using the LX200 in ALTAZ 10
a. Entering Basic Information 10
b. Location of the Observing Site 10
c. Local Time and Date 11
d. Setting Up the Telescope 11
e. Using the MODE key 12
f. Library Object Keys 13
4. Star Alignment 13
a. 1-Star with Known SITE 13
b. 2-Star with Known SITE 13
c. Unknown SITE 13
d. Which Alignment Method to Use 13
The LX200 Keypad Hand Controller 14
1. ENTER Key 14
2. MODE Key 14
3. GO TO Key 14
4. Direction Keys 14
5. Speed Keys 14
6. RET Key 14
7. FOCUS Key 15
8. AP Key 15
9. Object Keys 15
10. PREV and NEXT Keys 15
The LX200 Power Panel 15
1. ON/OFF Switch 15
2. N/S Switch 15
3. Ammeter 15
4. DEC Motor Connector 15
5. CCD Connector 16
6. Power 12vDC Connector 16
7. Keypad Connector 16
8. Reticle Connector 16
9. Focuser Connector 16
10. RS-232 Connector 16
11. Aux Connector 16
Mode Functions 16
1. Mode 1: Telescope/Object Library 16
a. Telescope Menu File 16
b. Object Library Menu File 20
2. Mode 2: Coordinates/GO TO 22
a. Coordinates Menu File 22
b. GO TO Menu Option 22
3. Mode 3: Clock/Calendar 22
4. Mode 4: TIMER/FREQ 22
a. TIMER = Menu Option 23
b. FREQ = Menu Option 22
5. Mode 5: Keypad Off/Brightness Adjust 23
Magnification and Field of View 24
1. Magnification 24
2. Apparent Field and Actual Field 24
Appendix A: Equatorial Wedge 25
1. 8" Equatorial Wedge 25
a. Azimuth Control 25
b. Deluxe Latitude Adjuster 25
2. Superwedge 26
3. Mounting the Telescope 26
4. Magnetic Compass 27
a. Setting Magnetic Declination 27
b. Compass Installation 27
c. Finding True North 28
Appendix B: Equatorial Use 29
1. Celestial Coordinates 29
2. Lining Up with the Celestial Pole 29
3. Precise Polar Alignment 30
Appendix C: Star Library and Star Charts 31
1. Alignment Stars 31
2. Star Charts 32
Appendix D: Object Library 34
1. The LX200 64,359 Object Library 34
a. SAO Catalog 34
b. UGC Catalog 34
c. CNGC Catalog 34
d. 1C Catalog 35
e. GCVS Catalog 35
f. Star Catalog 35
g. M (Messier) Catalog 35
h. Planet Catalog 35
2. CNGC Catalog 36
3. STAR Catalog 43
4. M (Messier) Catalog 49
Appendix E: Maintaining Your LX200 51
1. Keeping Your Telescope Clean 51
2. Collimation of the Optical System 52
3. Right Ascension Lock 53
4. Behind the Power Panel 53
5. Factory Servicing and Repairs 53
Appendix F: Personal Computer Control 54
1. The RS-232 Cable 54
2. LX200 Test Program 54
3. LX200 Command Set 55
a. Command Set Formats 55
b. General Telescope Information 55
c. Telescope Motion 56
d. Home Position 56
e. Library/Objects 56
f. Miscellaneous 57
4. LX200 Demo Program 58
Appendix G: LX200 Specifications 62