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Celestron 31057 User Manual
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Celestron 31057 Omni XLT 150 Telescope
INSTRUCTION MANUAL - Page 56
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INTRODUCTION
Warning
ASSEMBLY
Setting Up The Tripod
Attaching The Equatorial Mount
Attaching The Center Leg Brace
Installing The Counterweight Bar
Installing The Counterweights
Attaching The Slow Motion Control Knobs (Cables)
Attaching The Telescope Tube To The Mount
Installing The Finderscope
Installing The Visual Back
Installing The Star Diagonal
Installing The Eyepieces
Moving The Telescope Manually
Balancing The Mount In RA
Balancing The Mount In DEC
Adjusting The Mount
Adjusting The Mount In Altitude
Adjusting The Mount In Azimuth
TELESCOPE BASICS
Image Orientation
Focusing
Aligning The Finderscope
Calculating Magnification
Determining Field Of View
General Observing Hints
ASTRONOMY BASICS
The Celestial Coordinate System
Motion Of The Stars
Latitude Scale
Pointing At Polaris
Finding The North Celestial Pole
Polar Alignment In The Southern Hemisphere
Pointing At Sigma Octantis
Finding The South Celestial Pole (SCP)
Declination Drift Method Of Polar Alignment
Aligning The RA Setting Circle
Using The RA Vernier Scale
CELESTIAL OBSERVING
Observing The Moon
Lunar Observing Hints
Observing The Planets
Observing The Sun
Solar Observing Hints
Observing Deep Sky Objects
Seeing Conditions
Transparency
Sky Illumination
Seeing
Using The Lens Cap Aperture Stop With Refractor Telescopes
ASTROPHOTOGRAPHY
Piggyback Photography
Short Exposure Prime Focus Photography For Refractors & Newtonians
Short Exposure Prime Focus Photography For SchmidtCassegrains
Eyepiece Projection For A SchmidtCassegrain
Long Exposure Prime Focus Photography
Planetary And Lunar Photography With Special Imagers
CCD Imaging For Deep Sky Objects
Terrestrial Photography
Metering
Reducing Vibration
TELESCOPE MAINTENANCE
Care And Cleaning Of The Optics
Collimation Of Refractors
Collimation Of A SchmidtCassegrain
Collimation Of A Newtonian
OPTIONAL ACCESSORIES
APPENDIX A: TECHNICAL SPECIFICATIONS
APPENDIX B: GLOSSARY OF TERMS
SKY MAPS
CELESTRON TWO YEAR WARRANTY
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Contents
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File type: PDF
File name: 20962355_31057.pdf
File size: 8.5 MB
File Language: English
Pages: 62
Author: Celestron
File created: 2023-10-14
Published:
2023-10-19
Updated: 2023-10-25
Verified by
Mozell Leffler
on 2023-10-25
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Table of Contents
×
INTRODUCTION
4
Warning
4
ASSEMBLY
8
Setting Up The Tripod
8
Attaching The Equatorial Mount
9
Attaching The Center Leg Brace
10
Installing The Counterweight Bar
10
Installing The Counterweights
11
Attaching The Slow Motion Control Knobs (Cables)
11
Attaching The Telescope Tube To The Mount
12
Installing The Finderscope
13
Installing The Visual Back
13
Installing The Star Diagonal
14
Installing The Eyepieces
14
Moving The Telescope Manually
15
Balancing The Mount In RA
15
Balancing The Mount In DEC
16
Adjusting The Mount
16
Adjusting The Mount In Altitude
17
Adjusting The Mount In Azimuth
17
TELESCOPE BASICS
18
Image Orientation
20
Focusing
20
Aligning The Finderscope
21
Calculating Magnification
21
Determining Field Of View
22
General Observing Hints
22
ASTRONOMY BASICS
23
The Celestial Coordinate System
23
Motion Of The Stars
24
Latitude Scale
25
Pointing At Polaris
25
Finding The North Celestial Pole
26
Polar Alignment In The Southern Hemisphere
27
Pointing At Sigma Octantis
28
Finding The South Celestial Pole (SCP)
28
Declination Drift Method Of Polar Alignment
29
Aligning The RA Setting Circle
30
Using The RA Vernier Scale
31
CELESTIAL OBSERVING
32
Observing The Moon
32
Lunar Observing Hints
32
Observing The Planets
32
Observing The Sun
33
Solar Observing Hints
33
Observing Deep Sky Objects
33
Seeing Conditions
33
Transparency
33
Sky Illumination
33
Seeing
34
Using The Lens Cap Aperture Stop With Refractor Telescopes
34
ASTROPHOTOGRAPHY
35
Piggyback Photography
35
Short Exposure Prime Focus Photography For Refractors & Newtonians
36
Short Exposure Prime Focus Photography For SchmidtCassegrains
36
Eyepiece Projection For A SchmidtCassegrain
37
Long Exposure Prime Focus Photography
38
Planetary And Lunar Photography With Special Imagers
39
CCD Imaging For Deep Sky Objects
40
Terrestrial Photography
40
Metering
40
Reducing Vibration
40
TELESCOPE MAINTENANCE
41
Care And Cleaning Of The Optics
41
Collimation Of Refractors
41
Collimation Of A SchmidtCassegrain
42
Collimation Of A Newtonian
44
OPTIONAL ACCESSORIES
48
APPENDIX A: TECHNICAL SPECIFICATIONS
51
APPENDIX B: GLOSSARY OF TERMS
52
SKY MAPS
55
CELESTRON TWO YEAR WARRANTY
61
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