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Fig. 7.1f

Fig. 7.1g

Fig. 7.1h

PART VII: Proper Care for Your Telescope

19

7.2 Cleaning Your Telescope

Replace the dust cap over end of telescope whenever not in use. This prevents dust from 
settling on mirror or lens surface. Do not clean mirror or lens unless you are familiar with 
optical surfaces. Clean eyepieces with special lens paper only. Eyepieces should be han
dled with care, avoid touching optical surfaces.

Secondary 

mirror

Primary mirror

stop and keep your 

hand here

collimating cap in

Aligning the Primary Mirror

There are 3 large bolts and 3 small screws at the back 

of your telescope. The large bolts are the adjusting 

screws and the small screws are the locking screws 

(Fig.7.1f). Loosen the large bolts by a few turns. Now 

run your hand around the front of your telescope 

keeping your eye to the focuser, you will see the 

reflected image of your hand. The idea here being to 

see which way the primary mirror is defected, you do 

this by stopping at the point where the reflected image 

of the secondary mirror is closest to the primary 

mirrors’ edge (Fig. 7.1g).
When you get to that point, stop and keep your hand 

there while looking at the back end of your telescope, 

is there an adjusting screw there? If there is you will 

want to loosen it  (turn the screw to the left)  to bring 

the mirror away from that point. If there isn’t a adjust-

ing screw there, then go across to the other side and 

tighten the adjusting screw on the other side. This will 

gradually bring the mirror into line until it looks like 

Fig.7.1h. (It helps to have a friend to help for primary 

mirror collimation, Have your partner adjust the 

adjusting screws according to your direction while you 

look in the focuser.)
After dark go out and point your telescope at a bright 

star, and put the high power eyepiece (10mm) in the 

focuser. Keep that bright star well centred in the 

middle of the eyepiece image. Check now the collima-

tion by looking at its airy disk as described (fig. 7.1a). 

If it is not symmetric, you can improve the symmetry 

by acting on the adjustment screws of the primary 

mirror in a similar way as what you did in daytime to 

achieve the symmetry of fig. 7.1h.
Once the symmetry is there, then collimation is done 

and the locking screws can be tightened to make the 

adjustment permanent.

Содержание VIRTUOSO GTi

Страница 1: ...INSTRUCTION MANUAL VIRTUOSO GTi Copyright Sky Watcher 202102V1...

Страница 2: ...bles 6 2 5 Power Supply Requirements 6 Parts Diagram PART IV Assembling Your Telescope 4 2 Eyepiece Assembly 13 PART V Operating Your Telescope 5 2 Focusing the Telescope 15 5 1 Using the Red Dot Find...

Страница 3: ...gram Dovetail Groove Altitude Clutch Wheel Bubble Level Battery Compartment for 8x AA Batteries LED Indicator Hand Controller Port External Power Power Switch SNAP Port Azimuth Clutch Knob Dovetail Lo...

Страница 4: ...dovetail bar of the telescope into the dovetail groove of the saddle Fig 1 1b 4 Tighten the dovetail locking knob until the bar is securely locked in the groove DO NOT LET GO OF THE TELESCOPE UNTIL YO...

Страница 5: ...onnecting the SynScan hand controller SNAP This is a stereo jack outlet to connect with a camera s shutter control port The SynScan hand control can control the camera to take pictures automatically v...

Страница 6: ...ony cameras See the table below to select the appropriate cable for your camera model it can be ordered from the local Skywatcher dealer Part Number Camera Interface Style Controller Interface Compati...

Страница 7: ...rder to control the telescope and mount for astronomical observation Please refer to the SynScan hand control manual for operation instructions Users can download the free SynScan App from the App Sto...

Страница 8: ...ture can be disabled with the SynScan hand controller or the SynScan App If an user does not need to rotate the mount manually after alignment it is recommended to dis able this feature to obtain the...

Страница 9: ...9 A Eyepiece B Hex Focusing Ring Eyepiece Holder C Red Dot Finder D Telescope Main Tube E Slider Lock Screw F Dovetail PART IV Assembling Your Telescope REFLECTOR A B C D E F...

Страница 10: ...10 A Focus knob B Eyepiece C Red Dot Finder D Red Dot Finder Bracket E Telescope Main Tube F Dovetail PART IV Assembling Your Telescope REFLECTOR A B C D E F...

Страница 11: ...11 A Red Dot Finder B Red Dot Finder Bracket C Telescope Main Tube D Eyepiece E Dovetail F Diagonal G Focus knob PART IV Assembling Your Telescope MAKSUTOV A B C D E G F...

Страница 12: ...ctions carefully before beginning Your telescope should be assembled during daylight hours Choose a large open area to work to allow room for all parts to be unpacked reflector Fig 4 1 1a 1 PART IV As...

Страница 13: ...and re tighten the thumbscrew to hold the diagonal in place Loose the thumbscrews on the diagonal Insert the desired eyepiece into diagonal and secure by re tightening thumbscrews reflector Maksutov F...

Страница 14: ...sight tube and move your telescope until the red dot merges with the object Make sure to keep both eyes open when sighting Turn on the Red Dot Finder by rotating the variable brightness control clock...

Страница 15: ...osing the Appropriate Eyepiece length by the focal length of the eyepieces you are going to use For example a 10mm When you are looking at astronomical objects you are looking through a column of air...

Страница 16: ...tmosphere complete with turbulence dust particles and increased light pollution 6 2 Selecting an Observing Site Travel to the best site that is reasonably accessible It should be away from city lights...

Страница 17: ...telescope automatically with the VIRTUOSO GTi mount connected to your smart device equipped with WiFi smartphone tablet laptop 6 9 Wireless Terrestrial Photography Control The VIRTUOSO GTi mount can...

Страница 18: ...which covers the front of the telescope and look down the optical tube At the bottom you will see the primary mirror held in place by three clips 120 apart and at the top the small oval secondary mir...

Страница 19: ...the primary mirrors edge Fig 7 1g When you get to that point stop and keep your hand there while looking at the back end of your telescope is there an adjusting screw there If there is you will want...

Страница 20: ...VIRTUOSO GTi Mount...

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