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OMNI XLT 102 manual
Models:
OMNI XLT 102
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Specifications
Install
Warranty
Setting up the Tripod
To make collimation a simple procedure, follow these easy steps
Latitude Adjustment Screw
Declination Setting Circle
Care and Cleaning of the Optics
Weight
Focusing
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Contents
Omni XLT 102ED
Omni XLT Series Telescopes
INSTRUCTION MANUAL
Omni XLT
Table of Contents
Transparency
proper solar filter. Permanent and irreversible eye damage may result
Latitude Adjustment Screw
Accessory Tray/ Leg Brace
Counterweights
Counterweight Bar
Accessory Tray/ Leg Brace
Figure 1-2 Omni XLT 150 Newtonian
Finderscope Bracket
Focuser
Schmidt Corrector Lens
Declination Setting Circle
Figure 1-3 Omni XLT 127 Schmidt-Cassegrain
Latitude Scale
Setting up the Tripod
Attaching the Equatorial Mount
Attaching the Center Leg Brace
Installing the Counterweight Bar
Attaching the Slow Motion Control Knobs Cables
Installing the Counterweights
Screw
Attaching the Telescope Tube to the Mount
Tube Rings Mounting Bracket Mounting Platform Telescope Mounting
make contact with the finderscope body
Installing the Finderscope
Installing the Visual Back
Installing the Eyepieces
Installing the Star Diagonal
DEC Clamp R.A. Clamp
Moving the Telescope Manually
Balancing the Mount in R.A
GO OF THE TELESCOPE TUBE COMPLETELY
Adjusting the Mount
Balancing the Mount in DEC
Adjusting the Mount in Azimuth
Adjusting the Mount in Altitude
A cutaway view of the light path of the Refractor optical design
A cutaway view of the light path of the Newtonian optical design
Reversed from left to right, as
Focusing
Image Orientation
Actual image orientation as seen with the unaided eye
Calculating Magnification
Aligning the Finderscope
General Observing Hints
Determining Field of View
The celestial sphere seen from the outside showing R.A. and DEC
The Celestial Coordinate System
Starts seen near the celestial equator
Motion of the Stars
Starts seen near the north celestial pole
Pointing at Polaris
Latitude Scale
Finding the North Celestial Pole
Litle Dipper
Polar Alignment in the Southern Hemisphere
Polar Alignment with the Latitude Scale
Big Dipper
Finding the South Celestial Pole SCP
Pointing at Sigma Octantis
Declination Drift Method of Polar Alignment
Aligning the R.A. Setting Circle
Using the R.A. Vernier Scale
Planetary Observing Hints
Observing the Moon
Lunar Observing Hints
Observing the Planets
Seeing Conditions
Observing the Sun
Solar Observing Hints
Observing Deep Sky Objects
Seeing
Using the Lens Cap Aperture Stop with Refractor Telescopes
Piggyback Photography
See note about digital cameras below
Using Digital Cameras
Short Exposure Prime Focus Photography for Refractors & Newtonians
Short Exposure Prime Focus Photography for Schmidt-Cassegrains
Eyepiece Projection for a Schmidt-Cassegrain
Long Exposure Prime Focus Photography
Planetary and Lunar Photography with Special Imagers
Reducing Vibration
CCD Imaging for Deep Sky Objects
Terrestrial Photography
Metering
rub in circles
Care and Cleaning of the Optics
Collimation of Refractors
two 2 turns
Collimation of a Schmidt-Cassegrain
To make collimation a simple procedure, follow these easy steps
Aligning the Primary Mirror
Collimation of a Newtonian
Aligning the Secondary Mirror
Primary
Primary mirror needs Secondary mirror needsadjustment adjustment
Secondary Mirror
Both mirrors aligned with the collimating cap in the focuser
Night Time Star Collimating
Procedure -- Please read this section completely before beginning
diffraction
appear
pattern
Series 4 - #
Series 1 - #
Series 2 - #
Series 3 - #
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Appendix A Technical Specifications
Appendix B - Glossary of Terms
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Celestron Two Year Warranty
Item # 21088-INST Rev Printed in China $10.00
Celestron 2835 Columbia Street Torrance, CA 90503 U.S.A. Tel. 310
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Products or instructions may change without notice or obligation