Celestron CGEM DX Manuale delle Istruzioni Scaricare il pdf (Pagina 24)

CGem dX mounT

Hand Control

Doubleline,16characterLiquidCrystalDisplay;

19 ﬁber optic backlit LED buttons

Motor: Type

DC Servo motors with encoders, both axes

Max Slew Speed

5º/second

Software Precision

24 bit, 0.08 arcsec calculation

Hand Control Ports

RS-232 communication port on hand control

Motor Ports

Aux Port, Autoguide Ports

Tracking Rates

Sidereal, Solar and Lunar

Tracking Modes

EQ North & EQ South

Alignment Procedures

2-Star Align, 1-Star Align, Solar System Align, Quick Align, Last Align

Database

40,000+ objects, 100 user deﬁned programmable objects.

Enhanced information on over 200 objects.

Complete Revised NGC Catalog

7,840

Complete Messier Catalog

110

Complete IC Catalog

5,386

Complete Caldwell

109

Abell Galaxies

2,712

Solar System objects

Famous Asterisms

Selected CCD Imaging Objects

Selected SAO Stars

29,500

User deﬁned (Sky Objects)

User deﬁned (Land Objects)

Total Object Database

45,492

appendIX a – TeCHnICal speCIfICaTIons

appendIX b - Glossary of Terms

A –

Absolute The apparent magnitude that a star

magnitude

would have if it were observed from a

standard distance of 10 parsecs, or 32.6 light–

years. The absolute magnitude of the Sun is

4.8. at a distance of 10 parsecs, it would just

be visible on Earth on a clear moonless night

away from surface light.

Airy disk The apparent size of a star’s disk produced

even by a perfect optical system. Since the

star can never be focused perfectly, 84% of

the light will concentrate into a single disk,

and 16 % into a system of surrounding rings.

Alt–Azimuth A telescope mounting using two

Mounting

independent rotation axes allowing

movement of the instrument in Altitude

and Azimuth.

Altitude In astronomy, the altitude of a celestial object

is its Angular Distance above or below the

celestial horizon.

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Celestron CGEM DX Manuale delle Istruzioni Pagina 24

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