Observing the Moon

40

Observing the Planets

40

Observing the Sun

41

Observing Deep-Sky Objects

41

Using the Setting Circles

42

Star Hopping

43

Viewing Conditions

45

Transparency

45

Sky Illumination

45

Seeing

45

▲ CELESTIAL PHOTOGRAPHY

47

Short Exposure Prime Focus

48

Piggyback

49

▲ TELESCOPE MAINTENANCE

51

Care and Cleaning of the Optics

51

Collimation

51

▲ OPTIONAL ACCESSORIES

53

▲ THE MESSIER CATALOG

56

▲ LIST OF BRIGHT STARS

59

▲ FOR FURTHER READING

60

ii • Table of Contents

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Celestron 31056, 31058 instruction manual Celestial Photography