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4

FINDERSCOPE ASSEMBLY

Fig. 11

Fig. 12

EYEPIECE  ASSEMBLY

FINDERSCOPE ALLIGNMENT

ATTACHING THE FINDERSCOPE (Fig. 8, 9)

1) Locate finderscope optical assembly.
2)  Remove the two knurled thumbscrews 
     near the front of the telescope main tube.
3) Position the finderscope bracket over 
    the screws in the telescope main body.
4) Secure the finderscope bracket with the 
    two knurled thumbscrews.

These fixed magnification scopes mounted on the optical tube are very 
useful accessories. When they are correctly aligned with the telescope, 
objects can be quickly located and brought to the centre of the field. 
Alignment is best done outdoors in day light when it's easier to locate 
objects. If it is necessary to refocus your finderscope, sight on an object 
that is at least 500 yards (metres) away. Twist the end of the finderscope 
until focus is reached (Fig.11). 

1)  Choose a distant object that is at least 500 yards away 
     and point the main telescope at the object. Adjust the 
     telescope so that the object is in the centre of the view 
     in your eyepiece. 
2)  Check the finderscope to see if the object centred in the 
     main telescope view is centred on the crosshairs. 
3)  Use the three alignment screws to centre the finderscope 
     crosshairs on the object (Fig.12). 

Fig. 9

Fig. 8

Fig. 10

INSERTING EYEPIECE 
(Fig. 10)

1) Unscrew the thumbscrews 
    on the end of the focus 
    tube to remove the black 
    plastic end-cap. 
2) Insert the desired eyepiece
    and re-tighten thumb 
    screws to hold eyepieces 
    in place.

Summary of Contents for 767AZ1

Page 1: ...ocus Knob Finderscope Bracket Focuser Dust Cap Mask Secondary Mirror Position Altitude Fine Adjustment Control Yoke Mount Telescope Main Tube Yoke Locking Knob Altitude Lock Knob Primary Mirror Position Azimuth Lock Knob Accessory Tray Tripod Leg Height Adjustment Clamp Finderscope Allignment Screw ...

Page 2: ... 5 3 3 4 4 4 5 5 5 6 7 7 7 8 8 8 8 8 8 9 TABLE OF CONTENTS Read the entire instructions carefully before beginning Your telesope should be assembled during daylight hours Choose a large open area to work to allow room for all parts to be unpackaged Before you begin Never use your telescope to look directly at the sun Permanent eye damage will result Use a proper solar filter for viewing the sun Wh...

Page 3: ... each tripod leg to the bottom of the yoke mount using the machine screws with the washers and wingnuts Align each leg so that the hinge for the accessory tray faces inwards Be careful not to over tighten the wingnuts and damage tripod legs ATTACHING THE ACCESSORY TRAY Fig 3 1 Attach accessory tray to hinges on tripod legs using the small machine screws and wing nuts Flange fits under accessory tr...

Page 4: ...day light when it s easier to locate objects If it is necessary to refocus your finderscope sight on an object that is at least 500 yards metres away Twist the end of the finderscope until focus is reached Fig 11 1 Choose a distant object that is at least 500 yards away and point the main telescope at the object Adjust the telescope so that the object is in the centre of the view in your eyepiece ...

Page 5: ...oducing the same magnification However its greatest value may be that a Barlow can potentially double the number of eyepiece in your collection Focusing Fig c Slowly turn the focus knobs under the focuser one way or the other until the image in the eyepiece is sharp Fig c The image usually has to be finely refocused over time due to small variations caused by temperature changes flexures etc This ...

Page 6: ...d therefore the stars are constantly moving so to track with this mount you need to constantly nudge the optical tube in both azimuth and altitude to keep the object in the field In reference material for your local position the altitude will be listed as degrees minutes seconds above or below your horizon Azimuth may be listed by the cardinal compass points such as N SW ENE etc but it is usually ...

Page 7: ... bit from person to person is less until your eyes become fully dark adapted and decreases as you get older To determine an exit pupil you divide the diameter of the primary of your telescope in mm by the magnification For example a 200mm f 5 telescope with a 40mm eyepiece produces a magnification of 25x and an exit pupil of 8mm This combination can probably be used by a young person but would not...

Page 8: ... also affects images Astronomy is an outdoor activity The best conditions will have still air and obviously a clear view of the sky It is not necessary that the sky be cloud free Often broken cloud conditions provide excellent seeing Do not view immediately after sunset After the sun goes down the Earth is still cooling causing air turbulence As the night goes on not only will seeing improve but a...

Page 9: ...s New York 1984 Astrophotography An Introduction by H J P Arnold Sky Publishing Corp Cambridge MA Sky Telescope Observer s Guides Series ed Leif J Robinson 1995 Observational References Magazines Astrophotography for the Amateur by Michael Covington Cambridge University Press Cambridge UK 2nd edition 1999 Splendors of the Universe A Practical Guide to Photographing the Night Sky by Terence Dickins...

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