User manual CELESTRON C60-E

[. . . ] 8 Installing the Counterweight Bar . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8 Installing the Counterweight. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Attaching the Hand Control Holder . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 Attaching the Slow Motion Knobs. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . [. . . ] Goto Alt-Az - Allows you to enter a specific altitude and azimuth position and slew to it. Hibernate - Hibernate allows the telescope to be completely powered down and still retain its alignment when turned back on. This not only saves power, but is ideal for those that have their telescopes permanently mounted or leave their telescope in one location for long periods of time. Remember to never move your telescope manually while in Hibernate mode. After pressing Enter you have the option of scrolling through the time/site information to confirm the current setting. Press ENTER to wake up the telescope. Pressing UNDO at the Wake Up screen allows you to explore many of the features of the hand control without waking the telescope up from hibernate mode. To wake up the telescope after UNDO has been pressed, select Hibernate from the Utility menu and press ENTER. Do not use the direction buttons to move the telescope while in hibernate mode. Helpful Hint Turn On/Off GPS - If using your Advanced GT telescope with the optional CN-16 GPS accessory (see Optional Accessories section of the manual), you will need to turn the GPS on the first time you use the accessory. If you want to use the telescope's database to find the coordinates of a celestial object for a future or past dates you would need to turn the GPS off in order to manually enter a time other than the present. 27 ADVANCED GT MENU TRACKING MODE EQ NORTH EQ SOUTH OFF RATE SIDEREAL SOLAR LUNAR VIEW TIME-SITE SCOPE SETUP SETUP TIME-SITE ANTI-BACKLASH FILTER LIMITS DIRECTION BUTTONS GOTO APPROACH AUTOGUIDE RATE AZIMUTH LIMITS EAST/WEST FILTERING UTILITIES CALIBRATE GOTO HOME POSITION POLAR ALIGN LIGHT CONTROL FACTORY SETTING VERSION GET ALT-AZ GOTO ALT-AZ HIBERNATE TURN ON/OFF GPS USER OBJECTS GOTO SKY OBJ SAVE SKY OBJ ENTER RA & DEC SAVE LAND OBJ GOTO LAND OBJ GET RA-DEC GOTO RA-DEC IDENTIFY SELECT CATALOG PRECISE GOTO GOTO TYPE ALIGNMENT START-UP PROCUDURE SET TO INDEX ENTER TIME DLS/ST TIME ZONE ENTER DATE- MM/DD/YY ENTER LONG/LAT AUTO ALIGN CENTER STAR 1 CENTER STAR 2 CENTER STAR 3 LIST NAMED STAR NAMED OBJECT ASTERISM TOUR VARIABLE STAR DOUBLE STAR CCD OBJECTS ABELL IC CATALOG CALDWELL MESSIER NGC SAO SOLAR SYSTEM CONSTELLATION AUTO THREE-STAR ALIGN SELECT STAR 1 CENTER STAR 1 SELECT STAR 2 CENTER STAR 2 SELECT STAR 3 CENTER STAR 3 LAST ALIGNMENT QUICK-ALIGN 28 A telescope is an instrument that collects and focuses light. Developed in the early 1600s, the refractor is the oldest telescope design. It derives its name from the method it uses to focus incoming light rays. To determine the magnification of your telescope, simply divide the focal length of the telescope by the focal length of the eyepiece used. In equation format, the formula looks like this: Magnification = Focal Length of Telescope (mm) Focal Length of Eyepiece (mm) Let's say, for example, you are using the 20mm eyepiece. To determine the magnification you simply divide the focal length of your telescope (the C60-E for example has a focal length of 1200mm) by the focal length of the eyepiece, 20mm. Dividing 1200 by 20 yields a magnification of 60 power. 30 Although the power is variable, each instrument under average skies has a limit to the highest useful magnification. The general rule is that 60 power can be used for every inch of aperture. Multiplying 6 by 60 gives a maximum useful magnification of 360 power. Although this is the maximum useful magnification, most observing is done in the range of 20 to 35 power for every inch of aperture which is 120 to 210 times for the C60-E telescope. Determining Field of View Determining the field of view is important if you want to get an idea of the angular size of the object you are observing. To calculate the actual field of view, divide the apparent field of the eyepiece (supplied by the eyepiece manufacturer) by the magnification. In equation format, the formula looks like this: Apparent Field of Eyepiece True Field = Magnification As you can see, before determining the field of view, you must calculate the magnification. Using the example in the previous section, we can determine the field of view using the same 20mm eyepiece. To convert degrees to feet at 1, 000 yards, which is more useful for terrestrial observing, simply multiply by 52. 5. [. . . ] Convert the angle position to a 24bit number, same as Slow-Goto example. Alt Set Position: 80, 3, 17, 4, PosHigh, PosMed, PosLow, 0 59 APPENDIX E ­ MAPS OF TIME ZONES 60 61 62 63 64 65 66 3 67 CELESTRON TWO YEAR WARRANTY A. Celestron warrants this telescope to be free from defects in materials and workmanship for two years. Celestron will repair or replace such product or part thereof which, upon inspection by Celestron, is found to be defective in materials or workmanship. [. . . ]