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RH200 AT and MARK II AT COLLIMATION 

MANGIN, FRONT LENS AND TIP TILT 

 

Thanks for purchasing our RH200, simply the best astrograph on the market! 

As with any professional instrument, it needs a proper adjustment to be used.  

In this manual you will learn how to adjust the: 

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Primary mirror (Mangin) 

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Front lens 

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Tip tilt 

 

VERY IMPORTANT:

 normally, only primary mirror collimation is required. If you are not satisfied with your 

result, please contact Officina Stellare or your Dealer to get further assistance before making any further 
adjustments. An improper adjustment of the front lens or tip tilt will cause a dramatic telescope’s 
performance degradation vs. bad collimation. 
 

PRIMARY MIRROR (MANGIN) COLLIMATION 

The first step is to collimate the telescope, as you would do with any other scope using a mirror to collect 

and focus light. The RH200 is equipped with 3 screws on the backplate to adjust collimation. This is 

analogous to an SCT, Newtonian, or RC in that you use the 3 regulation screws to center the secondary 

mirror shadow. Stars must be extra focal and always in the center. You should always make very small 

adjustments of a 4

th

 a turn or less.  

 

                    

                                    

 

 

Using the 3 regulations screw on the backplate  

 

 

FROM 

TO 

Collimation 

screw 

Collimation 

screw 

Collimation 

screw 

Содержание RH200

Страница 1: ...tments An improper adjustment of the front lens or tip tilt will cause a dramatic telescope s performance degradation vs bad collimation PRIMARY MIRROR MANGIN COLLIMATION The first step is to collimat...

Страница 2: ...ront lens can also be adjusted with a very different effect The front lens will control the stars shape roundness and can remove or introduce aberrations most common one is astigmatism For example if...

Страница 3: ...ore than 1 turn in total If you loosen the front ring too much the front lens will be free to fall dawn To check if the front ring is too loose gently tap on it with a finger If you hear the front rin...

Страница 4: ...ng all pull screws 1 turn This will reduce compression on the front lens cell from the cup springs Then take another image to see if the star s shape has changed You need to bring the star NOTE If 1 t...

Страница 5: ...ke large temperature change or mishandling could require a deeper adjustment instead of the classical collimation If you have any questions about collimating your RH200 always contact Officina Stellar...

Страница 6: ...st other screws or stop Use the push screw to gently lock the pull screw TIP TILT REGULATION Mark II version 1 Take an image and check stars in the corners If not round go to step 2 2 Be sure your ima...

Страница 7: ...etely loosen the thumb screw or loosen it too much you remove stiffness to tip tilt system Now it s time to start having fun If you have questions please contact Officina Stellare or your dealer and w...

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