Celestron OMNI XLT 102 manual Attaching the Equatorial Mount

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Attaching the Equatorial Mount

The equatorial mount allows you to tilt the telescope’s axis of rotation so that you can track the stars as they move across the sky. The Omni mount is a German equatorial mount that attaches to the tripod head. On one side of the tripod head there is a metal alignment peg for aligning the mount. This side of the tripod will face north when setting up for an astronomical observing session. To attach the equatorial head:

1.Locate the azimuth adjustment screws on the equatorial mount (see Figure 2-4).

2.Retract the screws so they no longer extend into the azimuth housing on the mount. DO NOT remove the screws since they are needed later for polar alignment.

3.Hold the equatorial mount over the tripod head so that the azimuth housing is above the metal peg.

4.Place the equatorial mount on the tripod head so that the two are flush. You can rotate the mount slightly to the center position (where the front latitude adjustment screw is directly over the “N” on the tripod). Then tighten the azimuth adjustment screws.

5.Tighten the mounting knob (attached to the central rod) on the underside of the tripod head to hold the equatorial mount firmly in place.

Tripod

Head

Alignment

EquatorialPeg

Mount

Mounting

Knob

Figure 2-5

Azimuth Adjustment

Screws

Figure 2-4

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Contents Omni XLT Series Telescopes Table of Contents Astrophotography Page Omni XLT 102 Refractor Omni XLT 150 Newtonian Omni XLT 127 Schmidt-Cassegrain Setting up the Tripod Attaching the Equatorial Mount Attaching the Center Leg Brace Installing the Counterweight BarAttaching the Slow Motion Control Knobs Cables Installing the CounterweightsAttaching the Telescope Tube to the Mount Installing the Visual Back Installing the FinderscopeInstalling the Eyepieces Installing the Star DiagonalBalancing the Mount in R.A Moving the Telescope ManuallyBalancing the Mount in DEC Adjusting the MountAdjusting the Mount in Azimuth Adjusting the Mount in AltitudePage Page Image Orientation FocusingCalculating Magnification Aligning the FinderscopeGeneral Observing Hints Determining Field of ViewCelestial Coordinate System Motion of the Stars Pointing at Polaris Latitude ScaleFinding the North Celestial Pole Polar Alignment with the Latitude Scale Polar Alignment in the Southern HemisphereFinding the South Celestial Pole SCP Pointing at Sigma OctantisDeclination Drift Method of Polar Alignment Aligning the R.A. Setting Circle 11 Vernier Scale Using the R.A. Vernier ScaleLunar Observing Hints Observing the MoonObserving the Planets Planetary Observing HintsSolar Observing Hints Observing the SunObserving Deep Sky Objects Seeing ConditionsSeeing Using the Lens Cap Aperture Stop with Refractor TelescopesPiggyback Photography Using Digital Cameras Full Eyepiece Projection for a Schmidt-CassegrainLong Exposure Prime Focus Photography Planetary and Lunar Photography with Special Imagers Terrestrial Photography CCD Imaging for Deep Sky ObjectsMetering Reducing VibrationCollimation of Refractors Care and Cleaning of the OpticsTwo 2 turns Collimation of a Schmidt-CassegrainCollimated telescope Should appear Symmetrical with Aligning the Secondary Mirror Collimation of a NewtonianBoth mirrors aligned with your eye looking into the focuser Night Time Star Collimating As a Series 1 # Page Page Appendix a Technical Specifications Appendix B Glossary of Terms Page Page Page Page Page Page Page Page Celestron Two Year Warranty