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REFRACTOR TELESCOPE

TAL-75R

INSTRUCTION MANUAL

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Summary of Contents for TAL-75R

Page 1: ...REFRACTOR TELESCOPE TAL 75R INSTRUCTION MANUAL...

Page 2: ...ance 10 Adjustment of optical axes 11 Telescope alignment at the celestial pole 12 Observations 13 Visual observations 13 Photographic observations 16 Maintenance 17 Telescope alignment 18 Storage 19...

Page 3: ...idity up to 80 under fair weather When buying a telescope pay you attention to the integrity of packaging which is provided with manufacturer s seals After opening the packaging check the complete set...

Page 4: ...2 5 mm 1 with eyepiece and Barlow lens 0 30 with eyepiece Barlow lens and bushing 0 20 Resolution limit 1 8 Limiting stellar magnitude 11 2m Rotation angle of telescope in right ascension 360 24 h in...

Page 5: ...2 1 6 Bushing 1 7 Yellow light filter 1 8 Box 1 9 List of enclosure 1 Instruction manual 1 Supplementary accessories Pillar C57 Prism for direct observations PP 45 1 25 Eyepieces 1 25 f 6 3 f 10 f 17...

Page 6: ...scope tube and using an achromatic objective lens 1 is projected in the focal plane of the eyepiece 2 For comfort observations the eyepiece unit is inclined on 90 relatively to the optical axis of the...

Page 7: ...e Focusing device of friction type consists of an axis with handwheels 1 which help to shift the eyepiece tube Thesmoothnessofeyepieceshifting is provided by a screw 2 Screw 3 is intended for fixation...

Page 8: ...ects and tracking their diurnal motion Mount consists of inclination axis 1 with counterweights and polar axis 2 Rough pointing of the telescope tube by both axes fulfills by tube rotation when the ha...

Page 9: ...terweights 3 When using the pillar C57 unfasten stopper 4 unscrew handwheel 6 and take off the tripod 5 Remove the pillar 1 and legs 2 from their packaging and with the help of captive screws attach t...

Page 10: ...horizontal position 0 on the latitude scale Release the handle that fixes the polar axis and by shifting the load along the counterweight axis find an equilibrium position of the telescope Secure the...

Page 11: ...pose you should adjust the parallelism of optical axes of telescope tube and optical finder Insert the eyepiece f 12 5 mm 1 in the eyepiece tube 2 Point the telescope at a distant object Set the image...

Page 12: ...help of the clamp screw 1 For the rigid fixation of the polar axis of mount tighten the clamp screw with a wrench with the mouth size of 13 mm if necessary Set the tripod with the telescope in a way t...

Page 13: ...It is possible that at this time you will not be able to observe details of the planets and the Moon under such conditions Observations with the telescope through the window are meaningless as an unev...

Page 14: ...s 2 and bushing 3 you can get different magnifications see Specifications p 4 Minimum magnification is used when a large field of view is needed For example during observations of star clusters nebula...

Page 15: ...a yellow light filter 1 installed into the eyepiece 2 For sun observations use solar light filter 1 mounted on the objective blend 2 Warning To avoid eyes injury it is expressly forbidden to look thro...

Page 16: ...eyepiece tube 2 and secure them by the screw 3 Perform the shooting of bright objects that need a second exposure the best object is the Moon Otherwise pictures will be blurry due to the diurnal rota...

Page 17: ...tive s and eyepiece s lenses with a dry linen napkin To remove oil spots use a cotton wad wet with alcohol Conduct the cleaning of the diagonal mirror surface without pressure by cotton wad wet with e...

Page 18: ...stellar magnitude Untightening the screws take off a cover 1 and with the help of four screws by shifting a diagonal mirror achieve a diffraction image of a star of concentric form Diffraction image m...

Page 19: ...eated place with a temperature range of 5 to 40 C and relative humidity up to 80 Avoid impacts and sharp shocks of telescope It is prohibited to store acids alkalis or any chemical materials emitting...

Page 20: ...serial No ___________ are fit for operation Date of issue ______________ 20 Signatures __________________ Free retail price Manufacturer FSUE PA Novosibirsk Instrument Making Plant Dusi Kovalchuk 179...

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