Equinox Systems GEMINI Manuel d'utilisateur Page 64
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Gemini Users Manual 59
• {GoTo Bookmark #n}
5.3.6.1 RA/DEC Display
Upon selecting "RA/DEC Display," Gemini switches to the Telescope Control Mode and
displays the telescope's current RA and Dec. coordinates (hms +/-dms). Then, while
observing the display, you can move the telescope to a new position via the RA and DEC
directional buttons. As the telescope moves, the display will continuously change to
show the new position.
Note: See section “2.3.4 Moving the Mount Manually” of this manual for how the
telescope’s movement speed depends upon the Mode of the Hand Controller and the way the
directional buttons are pressed.
5.3.6.2 Enter RA/DEC
This command allows you to enter the RA and Dec. coordinates for a point in the sky.
As in the previous menu item, selecting "Enter RA/DEC" displays the telescope's current
RA and Dec. coordinates. You can now enter a new set of coordinates by changing the
displayed numbers.
To enter new coordinates, navigate from digit to digit with the RA directional buttons on
the Hand Controller, and change their values with the DEC buttons. After you have
completed the entry, navigate to the far right digit and press the RA+ button. The new
coordinates will be stored as a selected object that you can slew to via Gemini's GoTo
function (provided the object is above the horizon). If
Setup→Communication→Coordinate Epoch→Epoch J2000.0 was selected, the input
coordinates are interpreted as referring to the IAU standard epoch J2000.0, and are
precessed to the equinox of the date. As when selecting catalog objects, entering RA and
Dec. coordinates with this function causes Gemini to display the object's hour angle (in
minutes) and elevation (in degrees).
5.3.6.3 Az/El Display
Upon selecting "Az/El Display," Gemini switches to the Telescope Control Mode and
displays the telescope's current Azimuth and Elevation coordinates. Then, while
observing the Az/El display, you can move the telescope to a new position via the RA
and DEC directional buttons. Note that although the directional buttons move the
telescope in RA and Dec. in the same manner as in the “RA/DEC Display” menu
described above, as the telescope moves, the display will continuously change in
Azimuth and Elevation to show the new position.
The format of the coordinates displayed depends on the hand controller mode currently
selected. In Visual Mode, azimuth is displayed with arcmin accuracy and elevation with
arcsec accuracy. In Photo Mode, both azimuth and elevation are displayed with arcsec
accuracy, alternating every few seconds.
- 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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