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NGT-12.5

Owner's Manual

JMI Telescopes

Jim's Mobile, Inc.
8550 W 14th Ave

Lakewood, CO 80215

U.S.A.

WARNING

Viewing the sun without

proper equipment can

cause permanent

blindness.

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Содержание NGT-12.5

Страница 1: ...NGT 12 5 Owner s Manual JMI Telescopes Jim s Mobile Inc 8550 W 14th Ave Lakewood CO 80215 U S A WARNING Viewing the sun without proper equipment can cause permanent blindness...

Страница 2: ......

Страница 3: ...g the Telescope 11 Polar Alignment 11 Importance of the MAX Computer Dec 0 Setting 11 Electrical Connections 12 Optional Battery Pack 12 Using the Command Center 13 If You Suspect Improper Tracking 14...

Страница 4: ...oot of the nose assembly permit adjustment of the focal point of the telescope relative to the focuser The placement depends on whether the scope is being used with a camera and off axis guider a came...

Страница 5: ...uipment EZAlign Polar Alignment Scope After a one time alignment this unit simplifies the process of aligning on the celestial pole The constellation reticle works in both the northern and southern he...

Страница 6: ...e fully assembled telescope to be rolled easily over most surfaces Observatory Mounting This hardware option permits the NGT base to be secured to a concrete pad or pier for permanent or semi permanen...

Страница 7: ...the split ring assembly 9 Remove the protective wrapping of tape from around the three chromed counterweights located underneath the tub Unscrew the counterweights by turning them counter clockwise ta...

Страница 8: ...r mounting bracket Encoder cable Three 3 leveling screw pads metal discs Optional Equipment Nose assembly light baffle Focuser upgrade NGF DX2M NGF DX1 NGF DX1M DRO or DFC option Telrad adapter plate...

Страница 9: ...beneath the tub Be sure to tighten them equally to assure correct positioning of the mirror cell 5 Tighten the right ascension and declination tension knobs 6 Three truss rod clips are located 120 ap...

Страница 10: ...outh side Indexed nose assembly foot Focal Points and Eyepieces The three screw holes in each foot of the nose assembly permit the nose assembly to be properly placed to adjust the focal point of the...

Страница 11: ...h the extra CCD camera counterweight to the bottom of the tub Remember a balanced telescope is a happy telescope Polar Alignment For a surprisingly accurate and quick polar alignment simply place the...

Страница 12: ...r the declination bearing which is opposite the declination motor It utilizes a 4 conductor modular phone plug that connects to the declination encoder jack Disconnect this cable at the Encoder jack p...

Страница 13: ...and its direct drive period is approximately 80 minutes PEC is neither necessary nor practical Should you inadvertently enter the PEC mode the LED to the right of the PEC button is flashing or lit con...

Страница 14: ...escope will be driven in the same direction as the Earth s rotation making the sky appear to drift at twice its actual rate To change this setting remove the four screws from the sides of the Command...

Страница 15: ...over time Compressed air can also be used as long as you are careful to keep any propellant from being discharged onto the mirror A tub large enough to allow the mirror to be fully immerse Fill the t...

Страница 16: ...limation of a Newtonian reflector Accurate placement of the secondary mirror is the first step in collimating and absolutely crucial to the performance of the NGT In Newtonian reflectors with fixed fo...

Страница 17: ...e reflection of the primary mirror in the diagonal A generally dark field A brightly lit annulus or ring in the center of the field A dark spot or bull s eye in the center of the annulus Detail of the...

Страница 18: ...lignment of the secondary Check the secondary to determine whether it must be raised lowered rotated or tilted While this process may require several repetitions the first few times you will find that...

Страница 19: ...ntric perfectly circular rings is seen 6 Rotate the nose assembly 180 about the tube Relocate the star and observe the disk of the star If necessary adjust the secondary via the screw nearest the focu...

Страница 20: ...JMI Telescopes Jim s Mobile Inc 8550 W 14th Ave Lakewood CO 80215 USA 303 233 5353 Fax 303 233 5359 info jmitelescopes com...

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