Celestron 93507 manual Finderscope Installation

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To remove the eyepiece, loosen the thumbscrew on the star 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 eyepiece power or magnification; and the shorter the focal length (i.e., the smaller the number) the higher the magnification. Generally, you will use low-to-moderate power when viewing. For more information on how to determine power, see the section on “Calculating Magnification.”

Barrel diameter is the diameter of the barrel that slides into the star diagonal or visual back. The NexStar uses eyepieces with a standard 1-1/4" barrel diameter.

The Finderscope

The NexStar GPS comes with a 9x50 finderscope which has an 5.8° field-of-view. The specifications for a finderscope stand for the magnification and the aperture, in millimeters, of the scope. So, a 9x50 finder magnifies objects nine times and has a 50mm objective lens

Finderscope Installation

1.Find the two holes in the rear cell of the telescope on the top left, when looking from the back of the tube.

2.Remove any tape covering the two holes. The tape is there to prevent dust and moisture from entering the optical tube before the finder is installed.

3.Place the finder bracket over the two holes. Orient the bracket so that the rings that hold the finder are over the telescope tube, not the rear cell.

4.Insert the screws through the bracket and into the rear cell.

WARNING: If you remove the finderscope, do not thread the screws back into the rear cell of the telescope. The screws are long enough to obstruct the movement of, and possibly damage the primary mirror.

Figure 3-6 Mounting the Finderscope in the Bracket

With the bracket firmly attached to the telescope, you are ready to attach the finder to the bracket.

1.Thread the three nylon screws into the front ring of the finder bracket. Tighten the screws until the nylon heads are flush with the inner diameter of the bracket ring. Do NOT thread them in completely or they will interfere with the placement of the finder.

2.Slide the eyepiece end of the finderscope into the front of the bracket.

3.Slide the O-Ring over the back of the finder and position it on the finderscope body toward the eyepiece end.

4.Push the finder back until the O-Ring is snug inside the back ring of the finder bracket.

5.Hand tighten the three nylon thumbscrews until snug.

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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 AlignmentFinding Planets Object CatalogSelecting an Object Slewing to an ObjectDirection Buttons Tour ModeRate Button Alt-Az Setup ProceduresEQ North EQ SouthScope 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 Observing the Planets Observing the MoonLunar Observing Hints Planetary Observing HintsObserving Deep Sky Objects Observing the SunSeeing Conditions TransparencySeeing 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 Electronic Specifications Optical Specification NexStar 8 GPS NexStar 11 GPSMechanical Specifications Software 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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