Equinox Systems GEMINI Uživatelský manuál Strana 71
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Hodnocené. / 5. Na základě hodnocení zákazníků
Gemini Users Manual 66
corrections. Although an object can usually be kept centered using this technique, field
rotation occurs if there is polar misalignment. See Chapter 3, section 3.3.1.4 of this
manual for further details.
"Comet Tracking" is a tool that allows you to set independent RA and Dec. tracking rates
to track comets and other solar system objects that follow unique trajectories. This menu
item contains a submenu of five additional items which are “Enter RA Rate,” “Enter
DEC Rate, "Train Tracking," "Calculate Rates" and "Activate" (reselecting a previously
trained, calculated, or PC-downloaded rate). See Chapter 3, section 3.3.1.2 of this manual
for details on how to use this feature.
5.3.10.2.2 Moving Speeds
• Guiding
• Centering
• Slewing
• GoTo
The "Moving Speeds" entered through this menu are accessed when the telescope is
moved by means of the Hand Controller or a during a GoTo operation.
"Guiding" is the slowest of the "Moving Speeds"; it can be set within a range of 0.2 to 0.8
of the tracking speed. While guiding occurs at constant speed in Dec., it adds to or
subtracts from, the tracking speed in RA. For example, a "Guiding" speed of 0.5
increases RA tracking to 1.5 when guiding with the RA+ button of the Hand Controller,
and reduces it to 0.5 when guiding with the RA- button.
"Centering" speed is intended to be faster than "Guiding," but slower than "Slewing." It
can be set as high as 255 times "Sidereal" speed, and should be set to the comfort of the
observer for centering objects in the telescope's field of view.
"Slewing" speed is for moving the telescope over long distances using either the Hand
Controller or PC slewing control. It is set by default to 800 times "Sidereal" speed, and it
ramps down in speed when you release the Hand Controller button. If your mount is
slewing reliably without straining or stalling at the default speed, you may be able to
increase the speed to as much as 1200 times sidereal rate.
"GoTo" speed is for moving the telescope over relatively long distances during a GoTo
operation initiated from either the hand controller or PC software. As with "Slewing,”
the "GoTo" speed can be set as high as 1200, but the telescope mount often operates
more effectively if it is left at the default value of 800. In order not to overshoot its
target, GoTo slews ramp down to "Centering" speed as the telescope approaches its
destination object.
5.3.10.2.3 TVC Value (Time Variable Compensation)
This menu item helps compensate for the response delay caused by gear backlash when
changing direction in Dec. The TVC can eliminate the hysteresis that causes this to
- Users Manual 1
- Table of Contents 2
- 1 Introduction 6
- 1.2 Features 7
- 1.3 What’s New in Level 4? 10
- 2 Getting Started 13
- 2.2 Installation 14
- 2.2.3 Encoders 15
- 2.2.4 Power Requirements 16
- 2.3.1 Controls 16
- 2.3.3 QuickMenu 18
- 2.4 Basics of Operation 19
- 2.4.1.2 Startup Position 20
- 2.4.2 Power On and Setup 20
- 2.4.2.2 Completing Startup 23
- 2.4.2.3 Preferences 23
- 2.4.4 Normal Operation 27
- 2.5 Next Steps 28
- 3.1.2 Precession 30
- 3.2 How the Sky Moves 31
- 3.3 Tracking 31
- 3.3.1.1 Predefined Rates 32
- Training Comet Tracking 35
- Timer Values 35
- PC Controlled Tracking 36
- 3.3.2 Meridian Flip 37
- 3.3.3 RA Safety Limits 37
- 3.4 Polar Alignment 39
- 3.4.3 Accuracy Required 41
- 3.5 Mount Modeling 42
- 3.5.3 Modeling Parameters 44
- 4.2 Guiding 45
- 4.2.2 Manual Guiding 46
- 4.2.5 Software Guiding 47
- 4.3.2 The PEC Submenu 49
- 4.3.2.1 Train PEC 49
- 4.3.2.2 Clear Data 50
- 4.3.2.3 Turn PEC On/Off 50
- 4.3.2.4 Delay Correction 50
- 4.3.2.5 Drift Correction 51
- 4.3.2.6 Smooth Data 52
- 4.3.2.7 Average Data 52
- 4.4 Other Functions 53
- 5.1 Startup Mode Menu 54
- 5.2 The Main Menu 55
- 5.3 Subordinate Menu System 56
- 5.3.1.2 {Reset Alignment} 57
- 5.3.1.3 {Additional Align} 57
- 5.3.1.4 Synchronize 58
- 5.3.1.5 {Polar Al. Assist} 58
- 5.3.1.6 {Polar Axis Corr.} 58
- 5.3.2 Object Database 59
- 5.3.2.1 Database Use 59
- 5.3.2.2 Accuracy and Epochs 60
- 5.3.2.3 Credits 60
- 5.3.2.6 IC (Index Catalog) 61
- 5.3.6.1 RA/DEC Display 64
- 5.3.6.2 Enter RA/DEC 64
- 5.3.6.3 Az/El Display 64
- 5.3.6.4 Enter Az/El 65
- 5.3.6.5 Set Bookmark 65
- 5.3.6.6 {GoTo Bookmark #n} 65
- 5.3.7 Identify 65
- 5.3.8 Object Search 66
- 5.3.8.2 Wobble Object 67
- 5.3.9 Show Date/Time 67
- 5.3.9.2 Julian Date 67
- 5.3.10 Setup 68
- 5.3.10.1 Hand Controller 69
- 5.3.10.2 Mount Parameters 69
- 5.3.10.2.1 Tracking Speed 70
- 5.3.10.2.2 Moving Speeds 71
- 5.3.10.2.5 Mount Type 72
- 5.3.10.2.8 {Pointing Model} 75
- 5.3.10.3 Encoder 76
- 5.3.10.4 Alarm/Buzzer 76
- 5.3.10.5 UTC Date/Time 77
- 5.3.10.6 Credit Info 77
- 5.3.10.7 Restore Defaults 78
- 5.3.10.8 Dim Display 78
- 5.3.10.9 Geogr. Location 78
- 5.3.10.9.5 Store Site 79
- 5.3.10.9.6 Load Site 79
- 5.3.10.10 Communication 80
- 5.3.10.10.2 Sync or Align 80
- 5.4 QuickMenu 81
- 5.4.1 Focusing 82
- 5.4.4 Centering 82
- 5.4.5 Park Mount! 83
- 5.4.6 Meridian Flip 83
- 5.4.7 Exit w/o Change 83
- 6 Serial Communication 85
- 6.2 Hand Controller port 87
- 6.3 Serial Command Sets 88
- 6.5.1 Telescope Driver 90
- 6.5.3 Coordinate Epoch 90
- 6.6 Using Control Programs 91
- 7 Troubleshooting 92
- 7.2 Debug Mode 96
- 8 Appendices 97
- QuickMenu 101
- Cold Start Setup Menu 101
- *Reduced Menu 101
- 8.2 Catalogs 102
- 8.3 Alignment Star List 103
- 8.4 Serial Line Protocol 105
- • Right Ascension 112
- • Declination {+ 112
- • the object name (up to 10 112
- Gemini Native Commands 116
- 8.5 Serial Communications 129
- 8.6 Autoguider Port 130
- 8.7 Encoder Port 132
- Connecting End Switches 133
- 8.8 Feature Port 134
- 8.9 Motor Connector Pinouts 135
- RJ-45 Connector 135
- DIN Connector 135
- 8.10 Power Connector Pinout 136
- Power Connector 136
- 8.11 Upgrading the EPROM 137
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