15
Caldwell –
A combination of the best NGC and IC objects.
Planets -
All 8 planets in our Solar System plus the Moon.
Stars
– A compiled list of the brightest stars from the SAO catalog.
List
– For quick access, all of the best and most popular objects in the NexStar database have been broken down
into lists based on their type and/or common name:
Named Stars
Common name listing of the brightest stars in the sky.
Named Objects
Alphabetical listing of over 50 of the most popular deep
sky objects.
Double Stars
Numeric-alphabetical listing of the most visually stunning
double, triple and quadruple stars in the sky.
Variable Stars
Select list of the brightest variable stars with the shortest
period of changing magnitude.
Asterisms
A unique list of some of the most recognizable star
patterns in the sky
.
CCD Objects
A custom list of many interesting galaxy pairs, trios and
clusters that are well suited for CCD imaging with the
NexStar telescope.
IC Objects
A complete list of all the Index Catalog deep-sky objects.
Abell Objects
A complete list of all the Abell Catalog deep-sky objects.
5.
Info
:
Displays coordinates and useful information about objects selected from the NexStar database.
6.
Tour:
Activates the tour mode, which seeks out all the best objects for the current date and time, and automatically
slews the NexStar to those objects.
7.
Enter:
Pressing
Enter
allows you to selects any of the NexStar functions and accept entered parameters.
8.
Undo:
Undo
will take you out of the current menu and display the previous level of the menu path. Press
Undo
repeatedly to get back to a main menu or use it to erase data entered by mistake.
9.
Menu:
Displays the many setup and utilities functions such as tracking rate and user defined objects and many others.
10.
Scroll Keys:
Used to scroll up and down within any of the menu lists. A double-arrow will appear on the right side of
the LCD when there are sub-menus below the displayed menu. Using these keys will scroll through those sub-menus.
11.
Rate:
Instantly changes the rate of speed of the motors when the direction buttons are pressed.
12.
RS-232 Jack
: Allows you to interface with a computer and control the NexStar remotely.
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This section describes the basic hand control procedures needed to operate the NexStar. These procedures are grouped into three
categories: Alignment, Setup and Utilities. The alignment section deals with the initial telescope alignment as well as finding
objects in the sky; the setup section discusses changing parameters such as tracking mode and tracking rate; finally, the last
section reviews all of the utilities functions such as the slew limits, PEC and backlash compensation.
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In order for the NexStar to accurately point to objects in the sky, it must first be aligned to two known positions (stars) in the
sky.
With this information, the telescope can create a model of the sky, which it uses to locate any object with known
coordinates. There are many ways to align the NexStar with the sky depending on what information the user is able to provide:
GPS Align Mode
allows the NexStar to acquire all the necessary information needed to point itself to the required alignment
stars;
AutoAlign
will ask the user to input date and location information in order to locate the alignment stars;
Two-Star
Alignment
does not require the user to input date and location data, but does require the user to identify and manually slew the
telescope to the two alignment stars.
Quick-Align
will ask you to input all the same information as you would for the AutoAlign
procedure. However, instead of slewing to two alignment stars for centering and alignment, the telescope bypasses this step and
simply models the sky based on the information given. Finally,
EQ North and EQ South
alignments are designed to assist you
in aligning the NexStar when polar aligned using an equatorial wedge. Each alignment method is discussed in detail below.
GPS Alignment
GPS Align must be used with the telescope mounted in altazimuth. With GPS Align mode, the NexStar automatically levels the
optical tube, its built-in electronic compass points the telescope in the direction of the northern horizon, while the GPS receiver
links with and acquires information from 3 of the 24 orbiting GPS satellites. With this information, the built-in GPS system
calculates the scope’s location on Earth with an accuracy of a few meters and calculates universal time down to the second. After
quickly making all these calculations and automatically entering the information for you, the NexStar GPS orients itself with the
Summary of Contents for NexStar 11
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Page 61: ...61 APPENDIX E MAPS OF TIME ZONES...
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