LX200 Schmidt-Cassegrain telescopes now feature new baffle tube designs. These computer-optimized designs incorporate a series of 7 to 11 (depending on the focal ratio and size of the LX200) internal field-stops to eliminate almost all internal reflections, yielding the best image contrast available in any Schmidt-Cassegrain available today.
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. Do not point the telescope or its viewfinder at or near the Sun.
The capabilities of the instrument are essentially limited not by the telescope, but by the acquired skills of the observer and photographer. The 7", 8", 10", and 12" LX200 are, with the exception of a few assembly operations features, operationally.
1/4-20x1" long. When packaging the 10" or 12" LX200, be sure to release the R.A. lock (7, Fig. 1), and Dec. lock (2, Fig. 4), to prevent shock to the gears in the motor assemblies should the package suffer severe handling.
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. 1. The Field Tripod The field tripods (Figs. 2 and 3) for Meade 8", 10", and 12"...
45. This will give the number of degrees of southern horizon that the 12" LX200 will not move to. For example, if the latitude of the observing site is 35°, then 10° (45-35) of southern sky is unavailable for observations.
2. Using the LX200 In LAND The 7", 8", 10", and 12" LX200 telescopes are shipped with the microprocessor set to LAND, the align menu option you will wish to use to view terrestrial objects. In this menu option 4 different motion speeds are active, allowing the telescope to be moved electronically by means of the keypad.
(1) = 480 arcsec/sec GUIDE (0) = 30 arcsec/sec 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.
TIME information as described in Entering Basic Information (page 10). The third option is used when the SITE information is not known or has not been entered into the LX200’s memory. a. 1-Star with Known SITE The 1-Star alignment routine was explained in detail in Setting Up the Telescope (page 11).
PREV and NEXT work as well to select the objects from the Object Library when using START FIND. Fig. 7: 16” LX200 Power Panel. (1) Ammeter; (2) RS-232 Connector; 3) Aux Connector; (4) Focuser Connector; (5) Reticle Connector; (6) Keypad Connector; (7) ON/OFF Switch, (8) N/S Switch;...
The CCD cameras effectively watch a star and detect slight movements. When star movements are detected, signals from the CCD electronics make drive corrections in the LX200, to bring the star to a home position. Most CCD autoguiding/imaging cameras are supplied with a cable which is compatible with the LX200 port.
The LX200 will slew at any one of the four speeds of SLEW, FIND, CNTR, and GUIDE as activated by pressing the appropriately marked keys on the left...
8 minute pattern, or for every rotation of the worm) for greatly enhancing the tracking characteristics or the amount of East and West drift of your LX200. This greatly simplifies guiding during astrophotography. The menu also has provisions for correcting Declination drift. Smart Drive will retain the training given to the R/A drive, even after the telescope is turned off.
Meade Pictor 416 and Pictor 1616 CCD cameras. The HI-PRECISION feature increases the pointing accuracy of the LX200 to 1 arc-minute or better and also requires the “critical” alignment described above. This will yield the best pointing accuracy possible, placing objects onto the active area of the even the smallest CCD cameras available.
The position epoch of these objects is for real time, updated each time you turn on your LX200. Even the planet’s positions have their orbits calculated! This not only qualifies the LX200 as the most accurate integrated object library available, it will never require updated software for precession of the stars or planetary orbital changes.
- 21 - so that your LX200 will not try to find objects below your setting. Enter the number of degrees above the horizon that will clear the obstructions in the sky.
Coordinates Menu File You will at first see the RA = and DEC = coordinates of where the telescope is pointing. If you move the LX200 with the N, S, W, or E keys, the coordinates display will immediately update the new position in Right Ascension and Declination.
FREQ RATE DESCRIPTION 60.1 Hz Q Sidereal rate; Quartz setting power up. Gives sidereal frequency accuracy to ±.005%; Best for astrophotos 60.0 Hz Solar and Average rate for planetary rate tracking planets; Actual rates vary due oppositions, etc. 57.9 Hz Lunar rate tracking the Moon There are three menu file options in FREQ =.
“seeing,” the 7” LX200 may be used at powers up to about 450X on astronomical objects, the 8” LX200 may be used at powers up to about 500X, the 10” LX200 up to about 600X, and the 12” LX200 up to about 750X. Generally, however, lower powers of perhaps 250X to 350X will be the maximum permissible, consistent with high image resolution.
(e.g., by placing the wedge alone on a table top and then mounting the telescope on the wedge). The 7" or 8" LX200, placed onto the equatorial wedge alone without the field tripod attached to the wedge may become seriously imbalanced, to the point where the telescope may actually tip over.
(e.g., by placing the Superwedge alone on a table top and then mounting the telescope on the wedge). The 10" and 12" LX200, placed onto the Superwedge alone without the field tripod attached to the wedge may become seriously imbalanced, to the point where the telescope may actually tip over.
Grasping the 2 fork arms of the telescope firmly, with the power panel towards you, place the telescope onto the tilt plate of the wedge by sliding the knob (7" and 8" LX200) or screw (10" and 12" LX200) into the slot at the top of the curved-end of the wedge tilt-plate.
16° West Point of knob and Declination “North” line up Orienting Arrow Fig. 16: Magnetic Compass. Finding True North The Magnetic Compass is now ready to use. Just follow these simple steps for a quick and easy azimuth alignment: Loosen the knob/compass slightly. This allows for rotation of the equatorial wedge under the knob/compass (Fig.
Little Dipper Big Dipper Fig. 21: Locating Polaris. To line up the 7", 8", 10" or 12" LX200 with the Pole, follow this procedure: Using the bubble level located on the floor of the wedge, adjust the tripod legs so that the telescope/ wedge/tripod system reads “level.”...
Notwithstanding the precision and sophistication of the drive system supplied with the Meade LX200 telescopes, the fewer tracking corrections required during the course of a long- exposure photograph, the better. (For our purposes, “long- exposure”...
LX200 ALIGNMENT STAR 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 alignments. These stars were selected to allow observers from anywhere in the world on any given night, to be able to easily and quickly make precision alignments.
- 32 - 2. Star Charts (for Northern Hemisphere Observers) Overhead Overhead Aldeberan Aldebaran Betelgeuse Rigel Rigel Betelgeuse Sirius SOUTHEAST SOUTH January 7:00 to 9:00 February 7:00 to 9:00 Overhead Overhead Alkaid Betelgeuse Polaris Aldebaran Sirius Rigel SOUTHWEST NORTH March 7:00 to 9:00 April 7:00 to 9:00 Overhead Overhead...
Overhead Vega Alkaid Deneb Polaris NORTH July 7:00 to 9:00 Overhead Vega Deneb Polaris Alkaid NORTH September 7:00 to 9:00 Overhead Altair Deneb Vega Polaris NORTHWEST November 7:00 to 9:00 - 33 - Overhead Vega Alkaid Polaris NORTH August 7:00 to 9:00 Overhead Deneb Vega...
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.
Planet Catalog The LX200 calculates the orbital positions of the eight major planets for the current calendar date. To access a planet, use the STAR key and enter the appropriate number as indicated below: (NOTE: 903 is the Moon.)
It is also advisable that you let the foam lined case for the LX200 dry out indoors for a day if the night was moist. Packing your telescope away in a moist case can result in giving it a steam bath later.
Schmidt-Cassegrain design of the 8”, 10”, and 12” LX200, such collimation is absolutely essential for good performance. Take special care to read and understand this section well so that your LX200 will give you the best optical performance. NOTE: The 7” LX200 does not require collimation.
3. Right Ascension Lock After a period of time, it is possible that the R.A. lock (7, Fig. 1) of the LX200 will not tighten sufficiently due to internal wear of the clutch mechanism. In such an event, remove the R.A. lock lever using one of the hex wrenches supplied with the telescope.
450 RETURN 460 END To use the above program, connect the completed cable to your PC serial port and to the LX200 RS-232 Port. Load BASIC GWBASIC), “LX200TST.BAS.” Nothing will appear on the computer screen. Press any one of the N, S, E, or W (lower case) keys on your...
West respectively. Press the space bar on the PC keyboard to stop. Press X to exit the program. If the LX200 does not respond to the N, S, E, or W keys, be sure the CAPSLOCK is OFF. If it still does not work, check the PC serial port pinouts of your computer to be sure they are wired correctly to the LX200 6-line connector.
0, 1, 2, or 4 (see description) Slews telescope to current object coordinates. returned if the telescope can complete the slew, 1 is returned if the object is below the horizon, 2 is returned if the object is below the “higher” limit, and 4 is returned if the object is above the lower limit.
Gets the brighter (Gb) or fainter (Gf) magnitude limit for the FIND operation. Command :Sb sMM.M# :Sf sMM.M# Returns Sets the brighter (Sb) or fainter (Sf) magnitude limit for the FIND operation. Command :Gl# :Gs# Returns NNN'# Gets the larger (Gl) or smaller (Gs) size limit for the FIND operation.
Set is written in ASKII character format and can be used to write your own programs. The LX200 Demo Program on the following pages, is written in Quick Basic and is intended to demonstrate how commands are sent to the telescope and information is received from the telescope.
OBDRAW: LOCATE 6, 31: PRINT " O B J E C T I N F O R M A T I O N"; LOCATE 7, 31: PRINT "Object: LOCATE 8, 31: PRINT "Rating: LOCATE 9, 31: PRINT "Magnitude: "; MID$(info$, 20, 5); LOCATE 10, 31: PRINT "Size: IF counter = 0 THEN LOCATE 11, 31: PRINT "RA:";...
PRINT BOX$; RETURN help: LOCATE 14, 10: PRINT "E W N S keys move telescope. SPACE BAR stops."; LOCATE 15, 10: PRINT "M key to enter Messier object."; LOCATE 16, 10: PRINT "T key to enter sTar."; LOCATE 17, 10: PRINT "P key to enter Planet (900 + orbit #).";...
ONE YEAR from the date of original purchase in the U.S.A. and Canada. Meade will repair or replace a product, or part thereof, found by Meade to be defective, provided the defective part is returned to Meade, freight-prepaid, with proof of purchase.