Celestron NexStar 102 GT 102x1000 AZ, Instruction Manual

Page 1: ...л чит т нич ю н льт цию гл т чн Б з вы дны www sotmarket ru д бн я инф м ция т в тзывы бз ы и ы Инструкция NexStar 102 GT 102x1000 AZ Celestron Перейти в карточку товара 8 800 775 98 98 ...

Page 2: ...COMPUTERIZED TELESCOPE INSTRUCTION MANUAL ...

Page 3: ...1 Powering the NexStar GT 11 The Computerized Hand Control 11 Computerized Hand Control Operation 13 Alignment Procedure 13 SkyAlign 13 Auto Two Star Align 15 Two Star Alignment 16 One Star Align 17 Solar System Align 17 NexStar Re Alignment 18 Object Catalog 19 Selecting an Object 19 Slewing to an Object 19 Finding Planets 20 Tour Mode 20 Constellation Tour 20 Direction Buttons 20 Rate Button 21 ...

Page 4: ...ING 29 Observing the Moon 29 Lunar Observing Hints 29 Observing the Planets 29 Planetary Observing Hints 29 Observing the Sun 29 Solar Observing Hints 30 Observing Deep Sky Objects 30 Terrestrial Land Viewing 30 Terrestrial Land Viewing Hints 30 Seeing Conditions 31 Transparency 31 Sky Illumination 31 Seeing 31 TELESCOPE MAINTENANCE 32 Care and Cleaning of the Optics 32 APPENDIX A TECHNICAL SPECIF...

Page 5: ...before embarking on your journey through the Universe It may take a few observing sessions to become familiar with your NexStar so you should keep this manual handy until you have fully mastered your telescope s operation The NexStar Hand Control has built in instructions to guide you through all the alignment procedures needed to have the telescope up and running in minutes Use this manual in con...

Page 6: ...eel Tripod 5 Tripod Leg Extension Clamp 6 Computerized Hand Control with Hand Control Holder 7 Accessory Tray 8 Focuser Knob 9 Erect Image Diagonal 45 10 Eyepiece 11 StarPointer Finderscope 12 Optical Tube 13 Dovetail Mounting Clamp The NEXSTAR 102GT Refractor Telescope with Computerized Hand Control ...

Page 7: ...irst install the accessory tray onto the tripod legs 1 Remove the tripod from the box and spread the legs apart until the center leg brace is fully extended 2 Locate the accessory tray and place it on top of the tripod center support brace in between the tripod legs See figure 2 1 3 Rotate the accessory tray so that the central hole in the tray slides over the flange post in the center of the supp...

Page 8: ...atform 2 Thread the coupling screw into the hole at the bottom of the fork arm base and hand tighten See Figure 2 4 ATTACHING THE TELESCOPE TO THE FORK ARM Your telescope optical tube has a built on dovetail mounting bar used to attach the tube to the fork arm To attach the telescope tube 1 Loosen the tube clamp tightening knob 2 Slide the dovetail mounting bar of the telescope tube into the fork ...

Page 9: ... power 25 mm eye piece into the diagonal 4 Tighten the thumbscrew to hold the eyepiece in place 5 To remove the eyepiece loosen the thumbscrew on the diagonal and slide the eyepiece out Eyepieces are commonly referred to by focal length and barrel diameter The focal length of each eyepiece is printed on the eyepiece barrel The longer the focal length i e the larger the number the lower the eyepiec...

Page 10: ...our eye The StarPointer comes equipped with a variable brightness control two axes alignment control and mounting brackets Before the StarPointer is ready to be used it must be attached to the telescope tube and properly aligned See Figure 2 7 STARPOINTER INSTALLATION 1 Slide the StarPointer bracket into the dovetail mounting platform on top of the focuser assembly See figure 2 8 2 Orient the Star...

Page 11: ...ol knob about 180º until it stops 2 Locate a bright star or planet and center it in a low power eyepiece in the main telescope 3 With both eyes open look through the glass window at the alignment star 4 If the StarPointer is perfectly aligned you will see the red LED dot overlap the alignment star If the StarPointer is not aligned take notice of where the red dot is relative to the bright star 5 W...

Page 12: ...ntroller is designed to give you instant access to all the functions the Nex Star has to offer With automatic slewing to over 40 000 objects and commonsense menu descrip tions even a beginner can master its variety of features in just a few observing sessions Below is a brief description of the individual components of the NexStar GT Hand Controller 1 Liquid Crystal Display LCD Window Has a dual l...

Page 13: ...th and automatically slews the NexStar to those objects 5 INFO Displays coordinates and useful information about objects selected from the NexStar database 6 TOUR Activates the TOUR mode which seeks out all the best objects for a given month and automatically slews the NexStar to those objects 7 ENTER Pressing ENTER allows you to select any of the NexStar functions accept entered parameters and sl...

Page 14: ... will display a list of visible daytime objects planets and the Moon available to align the telescope Each alignment method is discussed in detail below Altazimuth or Alt Az refers to a type of mounting that allows a telescope to move in both altitude up and down and azimuth left and right with respect to the ground This is the simplest form of mounting in which the telescope is attached directly ...

Page 15: ...bserving from Again use the UP and DOWN buttons 10 to scroll through the choices For time zone information refer to the Time Zone map in the appendix of this manual DATE Enter the month day and year of your observing session The display will read mm dd yy If the wrong information has been input into the Hand Control the UNDO button will act as a backspace allowing the user to re enter information ...

Page 16: ...of 6 or lower Approaching the star from this direction when looking through the eyepiece will eliminate much of the backlash between the gears and assure the most accurate alignment possible AUTO TWO STAR ALIGN As with SKYALIGN Auto Two Star Align requires you to enter all the necessary time site information as before Once this information is entered NexStar will prompt you to select and point the...

Page 17: ... the NexStar is powered on use the UP and DOWN scroll keys to select Two Star Align and press ENTER 2 Press ENTER to accept the time site information displayed on the display or press UNDO to enter new information 3 The SELECT STAR 1 message will appear in the top row of the display Use the UP and DOWN scroll keys 10 to select the star you wish to use for the first alignment star Press ENTER 4 Nex...

Page 18: ...n position the NexStar will model the sky based on this information and display ALIGN SUCCESSFUL Note Once a One Star Alignment has been done you can use the Re alignment feature later in this section to improve your telescope s pointing accuracy SOLAR SYSTEM ALIGN Solar System Align is designed to provide excellent tracking and Go To performance by using solar system objects Sun Moon and planets ...

Page 19: ...e west considerably Remember that the stars are moving at a rate of 15º every hour Aligning on a new star that is in the eastern part of the sky will improve your pointing accuracy especially on objects in that part of the sky If you have aligned your telescope using the One Star align method you can use re align to align to an additional object in the sky This will improve the pointing accuracy o...

Page 20: ...scroll through only the SAO stars in the database For example in searching for the SAO star 40186 Capella the first four digits would be 0401 Entering this number will display the closest match from the SAO stars available in the database From there you can scroll down the list and select the desired object SLEWING TO AN OBJECT Once the desired object is displayed on the Hand Control screen you ha...

Page 21: ...NexStar will display the best objects to observe that are currently in the sky To see information and data about the displayed object press the INFO key To slew to the object displayed press ENTER To see the next tour object press the DOWN key CONSTELLATION TOUR In addition to the Tour Mode the NexStar telescope has a Constellation Tour that allows the user to take a tour of all the best objects w...

Page 22: ...ll move in the appropriate direction when looking into the eyepiece i e pressing the up arrow but ton will move the star upwards in the field of view of the eyepiece However if any of the slower slew rates rate 6 and below are used to center an object in the StarPointer you may need to press the opposite directional button to make the telescope move in the correct direction SET UP PROCEDURES The N...

Page 23: ...d each time the telescope is aligned Once a desired object is centered in the eyepiece simply scroll to the SAVESKYOBJ command and press ENTER The display will ask you to enter a number between 1 25 to identify the object Press ENTER again to save this object to the database SAVE DATABASE DB OBJECT This feature allows you to create your own custom tour of database objects by allowing you to record...

Page 24: ... let you know that the Ring Nebula M57 is approximately 6 from your current position Searching the Double Star catalog will reveal that Epsilon Lyrae is only 1 away from Vega To use the Identify feature Press the MENU button and select the IDENTIFY option Use the UP DOWN scroll keys to select the catalog that you would like to search Press ENTER to begin the search Note Some of the databases conta...

Page 25: ...from slewing to an object below the horizon or slewing to an object that is high enough that the tube might hit one of the tripod legs However the slew limits can be customized depending on your needs For example if you would like to slew to an object that is close to the zenith and are certain that the tube will not hit the tripod legs you can set the slew limits to 90º in altitude This will allo...

Page 26: ...ion for long periods of time To place your telescope in HIBERNATE mode 1 Select HIBERNATE from the Utility Menu 2 Move the telescope to a desire position and press ENTER 3 Power off the telescope Remember to never move your telescope manually while in HIBERNATE mode Once the telescope is powered on again the display will read Wake Up After pressing ENTER you have the option of scrolling through th...

Page 27: ...FY SELECT CATALOG PRECISE GO TO SKYALIGN SAVED SITE ENTER IF OK UNDO TO EDIT CENTER ALIGNMENT 1 CENTER ALIGNMENT 2 CENTER ALIGNMENT 3 AUTO TWO STAR ALIGN SAVED SITE ENTER IF OK UNDO TO EDIT SELECT STAR 1 CENTER STAR 1 SELECT STAR 2 CENTER STAR 2 TWO STAR ALIGNMENT SAVED SITE ENTER IF OK UNDO TO EDIT SELECT STAR 1 CENTER STAR 1 ONE STAR ALIGNMENT SAVED SITE ENTER IF OK UNDO TO EDIT SELECT STAR 1 CE...

Page 28: ...xStar 102GT using the erect image diagonal the image will be right side up and correct from left to right However when observing straight through with the eyepiece inserted directly into the telescope the image will be inverted CALCULATING MAGNIFICATION You can change the power of your telescope just by changing the eyepiece ocular To determine the magnification of your telescope simply divide the...

Page 29: ...ew things to remember to ensure you get the best possible image Never look through window glass Glass found in household windows is optically imperfect and as a result may vary in thickness from one part of a window to the next This inconsistency can and will affect the ability to focus your telescope In most cases you will not be able to achieve a truly sharp image while in some cases you may act...

Page 30: ...ars can reveal a host of surface detail and one if not both of its polar caps You will be able to see the cloud belts of Jupiter and the great Red Spot if it is visible at the time you are observing In addi tion you will also be able to see the Moons of Jupiter as they orbit the giant planet Saturn with its beautiful rings is easily visible at moderate power PLANETARY OBSERVING HINTS Remember that...

Page 31: ...oderate power is all you need to see them Visually they are too faint to reveal any of the color seen in long exposure photographs Instead they appear black and white And because of their low surface brightness they should be observed from a dark sky location Light pollution around large urban areas washes out most nebulae making them difficult if not impossible to observe Light Pollution Reductio...

Page 32: ...cult if not impossible to see To maximize your observing limit deep sky viewing to Moonless nights far from the light pol luted skies found around major urban areas LPR filters enhance deep sky viewing from light polluted areas by blocking unwanted light while transmitting light from certain deep sky objects You can on the other hand observe planets and stars from light polluted areas or when the ...

Page 33: ... an optical cleaning solution and white tissue paper to remove any remaining debris Apply the solu tion to the tissue and then apply the tissue paper to the lens Low pressure strokes should go from the center of the corrector to the outer portion Do NOT rub in circles You can use a commercially made lens cleaner or mix your own A good cleaning solution is isopropyl alcohol mixed with distilled wat...

Page 34: ...d 8 AA Alkaline Power Supply Requirements 12 VDC 750 mA Tip positive MECHANICAL SPECIFICATIONS Motor Type Resolution DC Servo motors with encoders both axes 26 arc sec Slew speeds Nine slew speeds 4º sec 2º sec 1º sec 5 sec 32x 16x 8x 4x 2x Hand Control Double line 16 character Liquid Crystal Display 19 fiber optic backlit LED buttons Fork Arm Cast aluminum SOFTWARE SPECIFICATIONS Software Precisi...

Page 35: ...ial hori zon Aperture The diameter of a telescope s primary lens or mirror the larger the aperture the greater the telescope s light gathering power Apparent Magnitude A measure of the relative brightness of a star or other celestial object as perceived by an observer on Earth Arc minute A unit of angular size equal to 1 60 of a degree Arc second A unit of angular size equal to 1 3 600 of a degree...

Page 36: ...biting around one another C Celestial Equator The projection of the Earth s equator on to the celestial sphere It divides the sky into two equal hemi spheres Celestial pole The imaginary projection of Earth s rotational axis north or south pole onto the celestial sphere Celestial Sphere An imaginary sphere surrounding the Earth concentric with the Earth s center Collimation The act of putting a te...

Page 37: ...12 7 and the Sun s brightness expressed on a magnitude scale is 26 78 The zero point of the appar ent magnitude scale is arbitrary Meridian A reference line in the sky that starts at the North celestial pole and ends at the South celestial pole and passes through the zenith If you are facing South the meridian starts from your Southern horizon and passes directly overhead to the North celestial po...

Page 38: ... in a particular line of eyepieces will be in focus Parsec The distance at which a star would show parallax of one second of arc It is equal to 3 26 light years 206 265 astronomical units or 30 8000 000 000 000 km Apart from the Sun no star lies within one parsec of us Point Source An object which cannot be resolved into an image because it to too far away or too small is considered a point source...

Page 39: ...ption of some portions of the path of Pluto lie within this band Twelve divisions or signs each 30 degrees in width comprise the zodiac These signs coincided with the zodiacal constellations about 2 000 years ago Because of the Precession of the Earth s axis the Vernal Equinox has moved westward by about 30 degrees since that time the signs have moved with it and thus no longer coincide with the c...

Page 40: ...COMPUTERIZED TELESCOPE APPENDIX E MAPS OF TIME ZONES 39 www celestron com ...

Page 41: ...COMPUTERIZED TELESCOPE APPENDIX E MAPS OF TIME ZONES CONTINUED 40 www celestron com ...

Page 42: ...COMPUTERIZED TELESCOPE 41 www celestron com ...

Page 43: ...COMPUTERIZED TELESCOPE 42 www celestron com ...

Page 44: ...ndling or unauthorized repair Further product malfunction or deterioration due to normal wear is not covered by this warranty CELESTRON DISCLAIMS ANY WARRANTIES EXPRESS OR IMPLIED WHETHER OF MERCHANTABILITY OF FITNESS FOR A PARTICULAR USE EXCEPT AS EXPRESSLY SET FORTH HEREIN THE SOLE OBLIGATION OF CELESTRON UNDER THIS LIMITED WARRANTY SHALL BE TO REPAIR OR REPLACE THE COV ERED PRODUCT IN ACCORDANC...

Page 45: ...ducts or instructions may change without notice or obligation This device complies with Part 15 of the FCC Rule Operation is subject to the following two conditions 1 This device may not cause harmful interference and 2 This device must accept any interference received including interference that may cause undesired operations 22093 06 11 Printed in China 10 00 ...

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