Celestron The G8 Bruksanvisning

Celestron Teleskop The G8

Läs nedan 📖 manual på svenska för Celestron The G8 (73 sidor) i kategorin Teleskop. Denna guide var användbar för 6 personer och betygsatt med 4.5 stjärnor i genomsnitt av 2 användare

Ladda ner PDF

Sida 1/73

The G-8

Model #11023

8" OPTICAL TUBE ASSEMBLY

Model #11023-1

CG-5 EQ Mount

Model # 91515

INSTRUCTION MANUAL

Table of Contents • i

T A B L E O F C O N T E N T S

▲▲▲▲

▲ INTRODUCTION.................................................................................................................................... 1

How to Use this Manual ................................................................................................................. 2

A Word of Caution .......................................................................................................................... 2

The Schmidt-Cassegrain Optical System ....................................................................................... 3

▲▲▲▲

▲ ASSEMBLING YOUR G - 8 ................................................................................................................... 4

The G-8 ......................................................................................................................................... 5

Assembling the CG-5 Equatorial Mount................................................................................ 6

Setting Up the Tripod ......................................................................................................... 6

Adjusting the Tripod Height ................................................................................................ 6

Attaching the Accessory Tray ........................................................................................... 7

Attaching the Equatorial Mount ......................................................................................... 8

Attaching the R.A. Slow Motion Knob ................................................................... 9

Attaching the Declination Slow Motion Knob........................................................ 10

Attaching the Counterweight Bar and Counterweights ..........................................11

Attaching the Telescope to the Mount ..............................................................................12

Removing the Lens Cap ....................................................................................................13

Balancing the Telescope in R.A. .......................................................................................14

Balancing the Telescope in DEC ......................................................................................14

Adjusting the Mount in Altitude ......................................................................................... 15

Adjusting the Mount in Azimuth........................................................................................15

Disassembling and Transporting Your G-8 ........................................................................16

Storing Your G-8 .............................................................................................................. 16

▲▲▲▲

▲ THE CELESTRON 8 OPTICAL TUBE ASSEMBLY ...............................................................................17

Setting Up your C8 OTA ....................................................................................................18

Installing the Finderscope ..................................................................................................18

Attaching the Finder Bracket to the Telescope ..................................................................18

Attaching the Finder to the Bracket ................................................................................... 19

Removing the Lens Cap..................................................................................................... 19

▲▲▲▲

▲ TELESCOPE BASICS ..........................................................................................................................20

Attaching the Accessories ............................................................................................................20

The Visual Back ...............................................................................................................20

The Star Diagonal ............................................................................................................. 20

The Eyepiece ................................................................................................................... 21

Image Orientation .......................................................................................................................... 22

Focusing .......................................................................................................................................23

Aligning the Finder ........................................................................................................................24

Your First Look ............................................................................................................................. 25

Daytime Observing ...........................................................................................................25

Nighttime Observing .........................................................................................................26

Calculating Magnification ...............................................................................................................27

Determining Field of View .............................................................................................................. 27

General Observing Hints ................................................................................................................28

General Photography Hints ........................................................................................................... 28

▲ ▲ ▲ ▲

▲ ASTRONOMY BASICS ........................................................................................................................29

The Celestial Coordinate System ..................................................................................................29

Motion of the Stars ........................................................................................................................30

ii Table of Contents•

Polar Alignment ............................................................................................................................. 31

Finding the Pole ............................................................................................................................32

Latitude Scales ................................................................................................................33

Pointing at Polaris ............................................................................................................34

Declination Drift ................................................................................................................35

Polar Alignment Finders ...................................................................................................36

Aligning the R.A. Setting Circle ........................................................................................36

▲ ▲

▲ CELESTIAL OBSERVING ................................................................................................................... 37

Observing the Moon ......................................................................................................................37

Observing the Planets ...................................................................................................................37

Observing the Sun ......................................................................................................................... 38

Observing Deep-Sky Objects .........................................................................................................39

Using the Setting Circles ..................................................................................................39

Star Hopping .................................................................................................................... 40

Viewing Conditions ........................................................................................................................42

Transparency.................................................................................................................... 42

Sky Illumination ................................................................................................................42

Seeing ..............................................................................................................................42

▲ ▲ ▲ ▲

▲ CELESTIAL PHOTOGRAPHY ............................................................................................................. 44

Short Exposure Prime Focus ........................................................................................................45

Piggyback .....................................................................................................................................47

Eyepiece Projection ......................................................................................................................49

Long Exposure Prime Focus .........................................................................................................51

CCD Imaging .................................................................................................................................53

Description of F-Numbers.........................................................................................................54

Imaging at f/1.95 ......................................................................................................................55

Imaging at f/6.3 ........................................................................................................................55

Imaging at f/10 .........................................................................................................................55

Imaging at f/20 .........................................................................................................................56

▲▲

▲ TELESCOPE MAINTENANCE ..............................................................................................................57

Care and Cleaning of the Optics ....................................................................................................57

Collimation ....................................................................................................................................57

▲ ▲

▲ OPTIONAL ACCESSORIES ................................................................................................................. 59

▲▲

▲ THE MESSIER CATALOG.................................................................................................................... 64

▲▲

▲ LIST OF BRIGHT STARS .................................................................................................................... 67

▲▲

▲ FOR FURTHER READING .................................................................................................................... 68

Produktspecifikationer

Varumärke:	Celestron
Kategori:	Teleskop
Modell:	The G8
Enhetsplacering:	Vrijstaand
Färg på produkten:	Wit
Dörrgångjärn:	Rechts
Bredd:	540 mm
Djup:	632 mm
Höjd:	838 mm
Dörrfärg:	Wit
Ljudnivå:	40 dB
Energie-efficiëntieklasse:	E
Årlig-energiförbrukning:	213 kWu
Frys nettokapacitet:	103 l
Fryskapacitet:	5 kg/24u
Dörröppningsriktning utbytbar:	Ja
Kylskåpets nettokapacitet:	103 l
Retentionstid vid strömavbrott:	12 uur
Antal fryshyllor:	3
antal stjärnor:	4*
Automatisk avfrostning (kylskåp):	Ja
Klimaatklasse:	SN-T
Automatisk avfrostning (frys):	Ja
Bulleremissionsklass:	C
Termostat:	Ja
Justerbar termostat:	Ja
Energieffektivitetsskala:	A tot G
Iskubshållare:	Ja