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Optical Tube Assembly 

 
We  are  now  ready  to  assemble  the  tube  section  of 
the  telescope.    First  unpack  the  parts  required  and 
set aside. 
 
1.    Take  Tube  Assembly  out  of  box  and  stand      
upright with sitting on the ground.  
  
2.     The Side Bearing Kit must be installed.  
This  comes  in  two  brown  boxes  inside  the            
Accessories Box.  (see image at right)  
 
 
 
 
 
 
 
 
 
 
 
 
 

 

Altitude 

Bearing 

with built

-in Break-

ing Sys-

tem 

 

3.    With  the  telescope  standing  in  the  upright       
position.  The  side  bearing  housing  is  visible  and  it 
contains both a Scale and Two (2) Small Brass Nuts 
with Phillips Head Screws protruding from them. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Altitude 

Bearing 

Housing 

with Brass 

Nuts 

 

4.          Re-

move  Phil-

lips Head Screws and place Altitude Bearing in posi-
tion  so  that  the  screws  will  screw  into  the  Brass 
Nuts. 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 

Altitude 

Bearing 

Fitted 

 
 
 

5.  One  side  panel  has  2  small  pre-drilled  holes  for 
mounting  the  Eyepiece  Rack.  Attach  the  Eyepiece 
Rack with its screws.  (see image below) 
 
 
 
 
 
 
 
 
 
 
6.   At-

tach  the 

handles 

to  the 

Front  Brace 

with  the  socket-head 

screws.  Insert  the  screws  through  the  handle  and 
into  the  predrilled  holes.  Fit  the  nuts  at  the  rear  of 
the  front  panel.    Tighten  the  bolts  with  an  Allen 
wrench.  

Note: 

Be sure that the threaded     inserts 

are on the inside of the rocker box. 
 
 
Attach the 

handle 

to the 

front  panel 

with the two 

black socket-head screws. Insert the screws through 
the handle and into the predrilled holes.  
Fit  the  nuts  at  the  rear  of  the  front  panel.  Tighten 
the bolts with an Allen wrench.  (see image below) 
 
 
 
 
 
 
 
 
 
 
 

 

Front 

Handle  

 
Your 

Rocker 

Box 

should 

now be complete and look like the image below. 
 
 
 
 
 

Summary of Contents for BT 152

Page 1: ...ANUAL THE BINOCULAR AND TELESCOPE SHOP 84 Wentworth Park Rd Glebe NSW 2037 519 Burke Rd Camberwell VIC 3124 Email info bintel com au WWW www bintelshop com au www bintel com au BINTEL TELESCOPES DOBSO...

Page 2: ...practice a little patience and a reasonably dark sky away from city lights you ll find your telescope to be a never ending source of wonder exploration and relaxation For after sales service or frien...

Page 3: ...9518 7255 for assistance Box 2 Dobsonian Base Qty Description 1 Left panel 1 Right panel 1 Front brace 1 Top baseplate has countersunk holes in it 1 Ground baseplate 2 Metal disks 1 Roller Bearing Ma...

Page 4: ...wrench to tighten the screws Do not com pletely tighten the screws yet See image be low Note Be sure that the Predrilled holes for the eyepiece rack are on the LEFT of the rocker box as view from the...

Page 5: ...titude Bearing in posi tion so that the screws will screw into the Brass Nuts Altitude Bearing Fitted 5 One side panel has 2 small pre drilled holes for mounting the Eyepiece Rack Attach the Eyepiece...

Page 6: ...cts to view in the night sky The 8 means it magnifies 8 times the 50 means it has a 50mm diameter lens It shows around 5 degrees of sky Before attaching the finder scope bracket to the telescope tube...

Page 7: ...crosshairs The finderscope is an invaluable tool for locating objects in the night sky its usage for this purpose will be discussed later in detail Focusing the FinderScope If when looking through th...

Page 8: ...nd remove the eyepiece Place it in the eyepiece rack if you wish Insert the 9mm eyepiece into the 1 25 eyepiece adapter then retighten the thumb screw If you were careful not to bump the telescope the...

Page 9: ...r collimating tool goes into the focuser like an eyepiece with the bottom end out The Bintel Deluxe Laser Collimator can also be used It comes with it s own instruction manual Aligning the Secondary M...

Page 10: ...oosen i e rotate counter clockwise each collimation thumb screw too much or the thumb screw will completely unthread from the mirror cell Rather try tightening the other two collimation thumb screws O...

Page 11: ...s and star clusters or even very many stars for that matter Your eyes take about 30 minutes to reach perhaps 80 of their full dark adapted sensitivity Many observers notice improvements after several...

Page 12: ...rt with a low power wide field and then work your way up in magnification If the object looks better try an even higher magnification If the object looks worse then back off the magnification a little...

Page 13: ...pect these subjects to appear like the photographs you see in books and mag azines most will look like dim gray smudges How to Find Deep sky Objects Starhopping Starhopping as it is called by astronom...

Page 14: ...er 4 NGC 6121 is a bright Globular Cluster with a line of 10th magnitude stars running north south through it By using the low power and moving one field at a time many objects will be found In the su...

Page 15: ...ed into place Handle the entire assembly carefully by the holder only do not touch the mirror surface You can clean the secondary mirror in its holder by following the same procedure described below f...

Page 16: ...t Dovetail base spring loaded X Y alignment Cooling Fan with Battery Pack TeleVue Eyepieces These are the standard candle of eyepieces and come in various focal lengths TeleVue eyepieces offer the sha...

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