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AMATEUR ASTRONOMER

TELESCOPE ÒÀË -1(TÀË-1Ò)

SERVICE MANUAL

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Содержание TAL-1

Страница 1: ...1 AMATEUR ASTRONOMER TELESCOPE ÒÀË 1 TÀË 1Ò SERVICE MANUAL ...

Страница 2: ...ration with telescope 17 6 2 Photographic observations 19 6 3 Telescope and atmospheric conditions 20 7 Maintenance 21 8 Possible derangements and methods of their elimination 22 9 Rules of storage 24 10 Acceptance certificate 25 Supplement Table of close stellar pairs for testing image quality of telescope 26 The instrument is subject to continuous development and improvement consequently it may ...

Страница 3: ...ed for visual observation of the celestial objects The telescope can operate normally at the ambient temperature from 30 C to minus 30 C When buying the telescope one should pay attention to the pack age safety ensured by the seal of the manufacturing pliant After unsealing the case one should check compliance of the com plete set denoted in the list of enclosure Prior to using the telescope one g...

Страница 4: ...cope at magnification 32x 1 29 64x 0 43 82x 0 33 165x 0 16 Resolution 1 3 Limiting magnitude 12m Range of slow motion control relative to the axes 4 Angle of rotation of the telescope in right ascension 360 24 h in declination 360 Range of setting by latitude 0 70 Angular view field of the finder scope 8 Visible magnification of the finderscope 6x Minimum distance of observation 65 m Overall dimen...

Страница 5: ...epiece of f 10 mm 1 Barlow lens 1 Retiñle 1 Yellow light filter 1 Black light filter solar 1 Blue light filter 1 Red light filter 1 Green light filter 1 Neutral grey lunar light filter 1 Blind 1 Bracket 1 Stopper 1 Cap diaphragm 1 Screwdriver 1 Napkin 1 Screen for observation of the Sun 1 Brush 1 Shipping Container Shipping case 1 Service Documents Service manual The telescope can be completed wit...

Страница 6: ... be adjusted by means of the screws I and 2 The diagonal mirror fig 4 is cemented to the cell and fixed in the telescope tube by means of a spider The inlet hole of the tube is covered with the cap 3 fig 5 after operation The focusing mechanism 4 fig 1 is composed of a rack and pinion The pinion axle carries the handwheels which help to move the eyepiece tube The smoothness of the tube movement ca...

Страница 7: ...7 Fig 1 General view of telescope with metal pier 1 2 3 4 5 6 7 ...

Страница 8: ...8 Fig 2 General view of telescope with trepod 3 2 1 ...

Страница 9: ...on the bracket 10 with the scale of latitudes fig 6 by means of which the whole system is set to the latitude of the observer s site Each axis has a circle which shows an hour angle or declination of the object visible in the telescope viewfield The position circle 7 on the declination axis which shows the declination of the object s fig ured from 0 to 90 with a division value of 2 The circle I on...

Страница 10: ...10 Fig 5 Tools and accessories 1 solar screen 2 cap diaphragm 3 cap 4 holder for camera 5 Barlow lens 6 eyepiece 7 light filtes 8 screwdriver 9 napkin 10 blind 11 reticle 1 2 3 4 5 6 7 8 9 10 11 ...

Страница 11: ...unting 1 circle of hour 2 polar axis 3 crew of axis brake 4 folding clips 5 handwheel of low motion 6 declination axis 7 circle of declination 8 counterweghts 9 hadle 10 bracket with cale of latitudes 1 2 10 9 5 8 7 6 5 4 3 ...

Страница 12: ...hich the finderscope is positioned The tube axis is set in the required position with the help of the equatorial mounting 4 2 Optical train The reflecting telescope is provided with the Newton optical system fig 7 The parallel beam of rays enters the telescope tube falls on the primary mirror 1 with the focal length of 805 mm and after reflect ing from it in the diagonal mirror 3 refracts at 90 an...

Страница 13: ...13 Fig 7 Optical train of telescope 1 primery mirror 2 eyepiece 3 diagonal mirror 4 finderscope 1 2 3 4 ...

Страница 14: ...14 Fig 8 Diagram of setting Barlow lens Eyepiece Barlow lens Eyepiece Focusing mount Focusing mount ...

Страница 15: ...es are placed then it should be mounted on the tube in two rings and fixed by means of six setting screws provided on the saddle For obtaining the required magnification of the telescoped the re spective eyepiece or the eyepiece with Barlow lens 5 fig 5 is insert ed in the eyepiece tube 5 2 Telescope balancing For smooth motion of the telescope and reliable operation of the micrometer screws it is...

Страница 16: ... holding the axis of declinations to see to it whether the telescope is in balance about the polar axis If it is not in balance move the counter weight 8 fig 6 along the axis of declinations by rotting it on thread When mounting the various devices on the telescope for example the camera it is required to balance the telescope addition ally ...

Страница 17: ...axes of the telescope and finderscope is checked The celestial sphere together with the astronomical objects performs the visible motion about the celestial axis Therefore the telescope is provided with the equatorial mounting Being set correctly this mount ing makes it possible to perform the celestial object tracking After pointing the telescope to the object the observer can keep the object in ...

Страница 18: ...n After precise setting of the polar axis one can set the declination and hour circles which must help to search the objects invisible with a naked eye or even through the finderscope First of all one should set the hour circle which is rixed on the polar axis For this purpose after the fine setting of the polar axis one un screws the screw of the brake of the polar axis and sets the declina tion ...

Страница 19: ...otation With this purpose the Barlow lens and the eyepiece with the reticle possessing great magnification are inserted in the eye piece tube Near the viewfield centre of the camera one chooses the bright star to which the telescope is pointed To keep the star on the reticle cross hairs is the problem for an observer for the whole period of exposure As the cross hairs of the telescope is not illum...

Страница 20: ...old seasons are possible when all tele scope parts acquire the ambient temperature For air circulation inside the telescope tube there is a hole plugged with a stopper in the cell of the primary mirror In operation the stopper should be unscrewed from the cell But in observations the great disturbance of atmosphere may take place at nights that leads to bad images of the celestial objects It is qu...

Страница 21: ...rewing the screws which fix the cell to the tube Without removing the mirror from the cell the mirror surface is wetted considerably with pure medical alcohol with the help of a cotton wool tampon By using the came tampon one wipes slightly the wet mirror without excessive effort and puts it at once under the stream of pure water After removing alcohol in this way one puts the mirror on its edge u...

Страница 22: ... mirror The image of the diagonal mirror must be positioned precisely in the middle of the primary The reflection of an observer s eye see fig 9 must be seen at the centre of the diagonal mirror reflection In adjustment it is required to correct the position of the diagonal mirror or primary one If the image of the primary mirror in the diagonal one must be concentric as well The change the positi...

Страница 23: ... of primery mirror in the diagonal mirror 4 reflection of diagonal mirror in the primary one 5 observe s eye The adjustment of the telescope is delicate and is carried out only in case of emergency when it is clear that tile telescope is misadjusted and its mirrors and reflections from them are not concentric ...

Страница 24: ... in the hearted premises with relative humidity of maximum 80 at air tem perature from 5 to 40 C The impacts and sharp shaking should be avoided It is forbidden to store the telescope together with acids alkalies materials which liberate moisture or chemically active gases and va pours ...

Страница 25: ...onomer telescope serial No is found fit for service slushed and packed in accordance with the established re quirements Slushing compound is effective for one year Signatures ___________________ ___________________ Date of manufacture and slushing ...

Страница 26: ...8 Lynx xUma 11h 15 6m 31 49 4 4 4 8 2 9 Ursa Major xBoo 14h 38 8m 13 56 4 6 4 6 1 2 Bootes eBoo 14h 42 8m 27 17 2 7 5 1 3 0 Bootes mDra 17h 04 3m 54 32 5 8 5 8 2 2 Draco tOph 18h 00 4m 08 11 5 4 6 0 2 0 Ophiucus 70 Oph 18h 02 9m 02 31 4 0 6 0 2 4 Ophiucus e1 Lyr 18h 42 7m 39 37 5 1 6 2 2 7 Lyra e2 Lyr 18h 42 7m 39 37 5 1 5 4 2 2 Lyra dCyg 19h 43 4m 45 00 3 0 6 5 2 2 Cygnus mCyg 21h 41 9m 28 30 4 7...

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