Celestron FIRSTSCOPE 60 EQ User Manual

Astronomers prefer the time designation for RA coordinates even though the coordinates denote locations on the
celestial sphere. Using time makes it easier to tell how long it will be before a particular star will cross a particular
north-south line in the sky. RA coordinates are marked off in units of time eastward from an arbitrary point on the
celestial equator, in the constellation Pisces. The prime RA coordinate which passes through this point is designated
“O hours O minutes 0 seconds.” We call this reference point the vernal equinox where it crosses the celestial
equator. All other coordinates are names for the number of hours, minutes and seconds that they lag behind the
prime coordinate after it passes overhead, moving westward.
Using the celestial coordinate system, it becomes possible to find celestial objects by translating their celestial
coordinates, using telescope pointing positions. To do this, you use your RA and DEC setting circles to find
celestial coordinates for stellar objects. These coordinates are given in star charts and reference books.
Polar Alignment
To make tracking the stars easier, rough polar alignment is required.
1. The right ascension (polar) axis should be pointed towards the North Pole (see the illustration below).
2. The equatorial mount should be level.
3. Your latitude should be set (see section on “Setting Latitude” on page 7).
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Celestron FIRSTSCOPE 60 EQ Specifications

General

Brand	Celestron
Model	FIRSTSCOPE 60 EQ
Category	Telescope
Language	English