Celestron 93507 manual Two Star Alignment, Quick-Align, Helpful Hint

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Trouble Shooting

Based on this information, the NexStar will automatically select a bright star that is above the horizon and slew towards it. Once finished slewing, the display will ask you to use the arrow buttons to align the selected star with the cross hairs in the center of the finderscope. If for some reason the chosen star is not visible (perhaps behind a tree or building) you can press UNDO to select and slew to a different star. Once centered in the finder, press ENTER. The display will then instruct you to center the star in the field of view of the eyepiece. When the star is centered, press ALIGN to accept this star as your first alignment star. After the first alignment star has been entered the NexStar will automatically slew to a second alignment star and have you repeat this procedure for that star. When the telescope has been aligned to both stars the display will read Alignment Successful, and you are now ready to find your first object.

If the wrong star was centered and aligned to, the NexStar display will read Alignment Failed and scroll the message, "the positions of the alignment stars did not match the database". Should this occur, press the UNDO button and re-align the telescope. Remember the alignment star will always be the brightest star nearest the field of view of the finder.

Two Star Alignment

With the two-star alignment method, the NexStar requires the user to know the positions of only two bright stars in order to accurately align the telescope with the sky and begin finding objects. Here is an overview of the two-star alignment procedure:

Helpful

Hint

1.Once the NexStar is powered on, use the Up and Down scroll keys (10) to select Two-Star Align, and press

ENTER.

2.The NexStar display the message Set Alt to Index . Use the Up and Down direction keys (3) and rotate the telescope tube until the index marker that moves with the optical tube is lined up with the stationary index marker on the fork arm (See figure 5-2). Press ENTER.

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.NexStar then asks you to center in the eyepiece the alignment star you selected. Use the direction buttons to slew the telescope to the alignment star and carefully center the star in the eyepiece.

In order to accurately center the alignment star in the eyepiece, it will be necessary to decrease the slew rate of the motors for fine centering. This is done by pressing the RATE key (11) on the hand controller then selecting the number that corresponds to the speed you desire. (9 = fastest , 1 = slowest).

5.Once the alignment star is centered in the field of view of the eyepiece, press the ALIGN key (2) to accept this position.

6.NexStar will then ask you to select and center a second alignment star and press the ALIGN key. It is best to choose alignment stars that are a good distance away from one another. Stars that are at least 40º to 60º apart from each other will give you a more accurate alignment than stars that are close to each other.

Once the second star alignment is completed properly, the display will read Alignment Successful, and you will hear the tracking motors turn-on and begin to track.

Quick-Align

Quick-Align allows you to input all the same information as you would for the AutoAlign procedure. However, instead of slewing to two alignment stars for centering and alignment, the NexStar bypasses this step and simply models the sky based on the information given. This will allow you to roughly slew to the coordinates of bright objects like the moon and planets and gives the NexStar the information needed to track objects in altazimuth in any part of the sky. Quick-Align is not meant to be used to accurately locate small or faint deep-sky objects or to track objects accurately for photography.

To use Quick-Align:

1.Select Quick-Align from the alignment options.

2.The hand control will then ask you to input all the same time and location information as you would for the AutoAlign procedure.

3.Use the direction buttons to move the telescope to its north and index position and press ENTER.

4.Once in position, the NexStar will model the sky based on this information and display Alignment Successful.

Note: Once a Quick-Align has been done, you can use the Re-alignment feature (see next page) to improve your telescopes pointing accuracy.

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Contents Page Introduction Quick Setup Assembly Telescope Maintenance Appendix E Time Zone MAP SKY Maps Observational Data Sheet Page Center Leg Brace Tension KnobLeg Finderscope Alignment Star Auxiliary Port Control PanelAssembling the NexStar Setting Up The TripodAttaching the NexStar to the Tripod Adjusting the Tripod Height3a Attaching the Hand Control for NexStar 8 GPS Attaching the Hand ControlStar Diagonal Adjusting the ClutchesEyepiece Finderscope Finderscope InstallationAligning the Finderscope Powering the NexStarNexStar Hand Control Hand Control Operation Alignment ProceduresGPS Alignment Few Words on GPSHelpful Auto-AlignHint Quick-Align Two Star AlignmentHelpful Hint NexStar Re-Alignment EQ North / EQ South AlignmentSlewing to an Object Object CatalogFinding Planets Selecting an ObjectDirection Buttons Tour ModeRate Button EQ South Setup ProceduresAlt-Az EQ NorthScope Setup Features Menu Utility FeaturesHelpful Hint Menu Alignment List NexStar GPSImage Orientation Calculating Magnification FocusingDetermining Field of View General Observing Hints Celestial sphere seen from the outside showing R.A. and DEC Celestial Coordinate SystemMotion of the Stars Finding the North Celestial Pole Polar Alignment with optional WedgeWedge Align Definition Declination Drift Method of Polar AlignmentPage Planetary Observing Hints Observing the MoonObserving the Planets Lunar Observing HintsTransparency Observing the SunObserving Deep Sky Objects Seeing ConditionsSeeing Short Exposure Prime Focus Photography Eyepiece Projection Lunar Phase ISO Crescent QuarterFull Planet ISO Moon Mercury Venus Mars Jupiter Saturn Long Exposure Prime Focus PhotographyUsing Periodic Error Correction Periodic Error Correction PECTerrestrial Photography Metering CCD ImagingReducing Vibration Fastar Compatible Optical System With Reducer/Corrector Fastar F/2 ImagingAuto Guiding Pin out diagram for Autoguider portCollimation Care and Cleaning of the OpticsCollimated telescope Should appear Super Modified Achromatic SMA Eyepieces 1 ¼ Page Page Software Specifications Optical Specification NexStar 8 GPS NexStar 11 GPSElectronic Specifications Mechanical SpecificationsAppendix B Glossary of Terms Page Page Appendix C Longitudes Latitudes Georgia Minnesota Rhode Island Canada Communication Protocol Description PC Command Ascii Hand Control ResponseReset The Position Of Azm Or Alt Send a Slow-Goto Command Through RS232 To The Hand ControlSend Any Track Rate Through RS232 To The Hand Control Appendix E Maps of Time Zones Page Page Page Page Page Page Page Observational Data Sheet Celestron TWO Year Warranty

93507 specifications

The Celestron 93507 is a powerful and versatile telescope designed for both amateur and seasoned astronomers. This model combines advanced technologies and practical features to deliver an enriching stargazing experience. One of the standout characteristics of the Celestron 93507 is its robust optical design. It features a 90mm aperture, allowing users to capture bright, detailed views of celestial objects, from the lunar surface to distant galaxies. The telescope employs a Maksutov-Cassegrain optical design, known for its compact form factor and high-quality images, free from chromatic aberration.

In terms of usability, the Celestron 93507 is designed with an easy setup in mind. It comes equipped with a solid mount that provides stability during observation. The mount also includes slow-motion controls, facilitating smooth panning across the night sky, allowing astronomers to track celestial objects effortlessly. This feature is particularly beneficial for viewing planets and other fast-moving astronomical phenomena.

Furthermore, the telescope comes with high-grade optics, including fully coated glass elements that enhance light transmission and ensure sharper images with higher contrast. It includes two eyepieces — a low-power 25mm and a high-power 10mm — that provide versatility in viewing options, whether you’re looking at wide expanses of the night sky or zooming in on close details of lunar craters.

Additionally, the Celestron 93507 is compatible with various Celestron accessories, including solar filters and advanced eyepieces, enabling users to expand their observational capabilities. The telescope's compact design makes it portable, perfect for amateur astronomers who enjoy taking their telescope for trips to dark-sky locations.

Another noteworthy feature of this telescope is its durability. Built to withstand the rigors of outdoor usage, the materials used in the Celestron 93507 are resistant to wear and tear, ensuring that users can enjoy stargazing for years.

Overall, the Celestron 93507 is a well-rounded instrument that combines advanced optical technology, user-friendly features, and portability, making it an excellent choice for anyone looking to explore the wonders of the universe. Whether you're interested in planetary observation, lunar details, or deep-sky wonders, this telescope offers the tools necessary to make your astronomical explorations rewarding.
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