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Collimation of the SharpStar 150HNT 

Preparation is Required before Collimation

 

Sharpstar 150 Hyperboloid Newtonian Reflector, Allen Wrenches, Laser Calibrator, Crosshair 
Eyepiece, 150 Reducer-specific tool, Depth measuring tool. 

 

                   

 

Sharpstar 150 Hyperboloid Newtonian Reflector                                Allen Wrench 
 

                 

 

                      Laser Calibrator                                                              Crosshair Eyepiece 

 

 

Connection Way

 

 

Summary of Contents for 150HNT

Page 1: ...e Collimation Sharpstar 150 Hyperboloid Newtonian Reflector Allen Wrenches Laser Calibrator Crosshair Eyepiece 150 Reducer specific tool Depth measuring tool Sharpstar 150 Hyperboloid Newtonian Reflector Allen Wrench Laser Calibrator Crosshair Eyepiece Connection Way ...

Page 2: ...st performance from your telescope This telescope has already been collimated at factory but it might have change due to transportation if the screws are not properly locking down the mirrors after collimation or a component may be loose somewhere in the optical train Now at Secondary mirror collimating unit Keep in mind that the secondary mirror has three degrees of freedom Tilt Rotation and Long...

Page 3: ... Collimation SETP 3 Insert the laser calibrator into the 1 25 adapter SETP 4 A laser produce a red dot will be shown near the primary mirror center dot Using the wrench and hand adjust the three collimation screws on the cross of secondary mirror to change its position so that the laser dot should move and coincide with the dot marking the center of the circle in the primary mirror and pre tighten...

Page 4: ... It then becomes necessary to Go to PM cell back plate and loosen very little the three large screws and adjust carefully little movement the three small screws to further center the dot and tighten the three large screws to hold this adjustment Note the location of the red dot should be at center in relation to the black circle or the location of the feedback red dot provided by laser calibrator ...

Page 5: ...in in the process of tightening the small screws on the back circle Now further fine adjustment is required at focuser collimating screws to re center the dot Crosshair Eyepiece Collimation See STEP 1 and STEP 2 in Laser Collimation which aren t repeated here STEP 3 Insert the crosshair eyepiece into the 1 25 adapter Insert white paper in telescope tube under focuser ...

Page 6: ... If not then Adjustment of the secondary mirror group and using the wrench with set screws on the cross to control the position of the secondary mirror so that the circle of the primary mirror is moved to be concentric with the circle of the secondary mirror as seen through the collimating eyepiece and the center reflection of the eyepiece is centered over the crosshair After this is done make cer...

Page 7: ...ting eyepiece Then tighten the small screws STEP 6 Turn the focuser or the crosshair eyepiece as seen the crosshair of crosshair eyepiece and the crosshair of secondary mirror have the same center If not adjust the three screws on the focuser until the desired pattern is obtained and then tighten them STEP 7 Put the reducer group back into the focusing barrel ...

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