Celestron 4SE Improving Pointing Accuracy, EQ Two-Star Align, EQ One-Star Align, Alignment Stars

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EQ Two-Star Align
Figure 4-3
The Meridian is an imaginary 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 pole.

7.The telescope then asks you to center in the eyepiece the alignment object you selected. Use the direction arrow buttons to slew the telescope to the alignment object and carefully center it in the finderscope. Press ENTER when centered.

8.Then, center the object in the eyepiece and press ALIGN.

9.Once you press the ALIGN button the telescope will automatically slew to a second alignment star. Repeat steps 6 and 7 to complete alignment.

EQ Two-Star Align

The EQ Two-Star Align follows most of the same steps as the Alt-Az Two- Star Align. This alignment method does not require the user to align the altitude index markers or point towards the Meridian, but it does require the user to locate and align the telescope on two bright stars. When selecting alignment stars it is best to choose stars that, a) have a large separation in azimuth and b) both are either positive or negative in declination. Following these two guidelines will result in a more accurate EQ Two-Star alignment.

EQ One-Star Align

EQ One-Star Align operates much the same way as EQ Two-Star Align however it only relies on the alignment of one star to align the telescope. To use EQ One-Star Align follow steps 1 through 7 under the EQ Two-Star Align section.

EQ Solar System Align

This alignment method allows you use only one solar system object to equatorially align the telescope for daytime use. To align your telescope

using a solar system object follow steps 1 through 7 under the EQ Two-Star Align section.

Improving Pointing Accuracy

The NexStar SE telescope have several options that allow you to improve the pointing accuracy of your mount in a variety of ways.

Alignment Stars:

Alignment stars allows you to replace any of the original alignment stars with a new star or celestial object. This will improve the pointing accuracy of your telescope without having to re-enter addition information.

To replace an existing alignment star with a new alignment star:

1.Select the desired star (or object) from the database and slew to it.

2.Once centered, press the UNDO button until you are at the main menu.

3.With NexStar SE displayed, press the ALIGN key on the hand control.

4.Use the Up/Down buttons and select the Alignment Stars option and press ENTER.

5.The display will then ask you which alignment star you want to replace. Use the UP and Down scroll keys to select the alignment star to be replaced and press ENTER. It is usually best to replace the star closest to the new object. This will space out your alignment stars across the sky.

6.Align the star in the center of the finderscope and press ENTER.

7.Carefully center the object in the center of the eyepiece and press ALIGN

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Contents INSTRUCTION MANUAL INTRODUCTION ASSEMBLYHAND CONTROL Hand Control Command Tree TELESCOPE MAINTENANCEAPPENDIX A - TECHNICAL SPECIFICATIONS TELESCOPE BASICSSome of the many standard features of the NexStar include Battery Compartment Accessory Tray / Leg BraceON/OFF Switch NexStar 4 SEPowering the NexStar Assembling the NexStarThe Hand Control Star Pointer Installation Figure 3-2 - The Rear Cell with Visual AccessoriesThe Eyepiece EyepieceStarPointer DiagonalStar Pointer Operation Removing the Optical TubeFigure 3-3 The Star Pointer Finderscope with Mounting Bracket Quick Release KnobAttaching the NexStar to the Tripod The NexStar Hand Control Hand Control Operation Alignment ProcedureDefinition Named StarsSky Align HintsTips for Using Sky Align Auto Two-Star AlignTwo Star Alignment Helpful HintOne-Star Align Solar System AlignTips for Using Solar System Align EQ North / EQ South AlignmentEQ AutoAlign Improving Pointing Accuracy EQ Two-Star AlignEQ One-Star Align EQ Solar System AlignObject Catalog SyncUndo Sync Selecting an ObjectSlewing to an Object Finding PlanetsTour Mode Constellation TourSetup Procedures Direction ButtonsNine available slew speeds Rate ButtonConnecting a Camera to the NexStar Mount CameraSave Database Db Camera Wizard Controlling your CameraObject Type Identify Scope Setup FeaturesPrecise GoTo MENU Utility Features HelpfulHint Sun MenuSet Mount Position NexStar SE ALIGNMENTLIST NexStar Menu TreeImage Orientation Fig 5-2a - Actual image orientation as seen with the unaided eyeFig 5-2b - Reversed from left to right, as viewed through the eyepieceCalculating Magnification FocusingDetermining Field of View General Observing Hints The Celestial Coordinate System The celestial sphere seen from the outside showing R.A. and DECMotion of the Stars Polar Alignment Aligning the NexStar 4 on a WedgeWedge Align moves in right ascension and declinationAttaching a Camera to the NexStar Photography with the NexStarThe position of the Big Dipper changes throughout Finding the North Celestial Polethe year and the night Observing the Moon Observing the PlanetsObserving the Sun Lunar Observing HintsObserving Deep Sky Objects Seeing ConditionsSolar Observing Hints TransparencyCare and Cleaning of the Optics Page Page Appendix A - Technical Specifications SpecificationElectronic Specifications Software SpecificationsAppendix B - Glossary of Terms Page Appendix C - RS-232 Connection Appendix D - Maps of Time Zones Page Page Page Page Page Page Page CELESTRON TWO YEAR WARRANTY Celestron 2835 Columbia Street Torrance, CA Tel. 310 Fax. 310 Copyright 2006 Celestron All rights reservedProducts or instructions may change without notice or obligation #11049-INST Printed in China $10.00