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Observations 

At  high  magnifications,  along  with 

increase  of  the  visual  sizes  of  the 

object, the atmosphere become more 

significant,  that  appears  as  distortion 

and  blurring  of  images  of  the  distant 

objects,  blinking  and  blurring  of  the 

stellar images. 

There  can  be  the  nights  with  poor 

images  of  celestial  bodies  because 

of  the  atmospheric  turbulence.  It  is 

possible that at this time you will not 

be able to observe the details of the 

planets  and  the  Moon  under  such 

conditions.

Observations  with  the  telescope 

through the window are meaningless 

as an uneven surface of window glass 

distorts images.

Cover  the  telescope  when  work  is 

finished  and  to  protect  it  against 

precipitations.

Choose  the  sky  object  interest  you. 

Point the telescope tube in the direction 

of  the  object.  Find  an  image  of  the 

object in the finder's field of view and 

set the object in the centre of the field 

of view.

Insert  the  eyepiece  (not  included 

into the set) into the eyepiece tube. 

With  the  help  of  handwheels  of 

eyepiece assembly, achieve the best 

sharpness of the image.

Using  various  eyepieces,  you  can 

get different magnifications.

Visual 

observations

Summary of Contents for TAL-125-5APO

Page 1: ...TELESCOPE TAL 125 5 SERVICE MANUAL...

Page 2: ...elescope 8 Adjustment of optical axes 8 Observations 10 Visual observations 10 Photographic observations 11 Maintenance 12 Telescope alignment 13 Storage 14 Acceptance certificate 15 Due to continuous...

Page 3: ...of 30 C to 30 C 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 indicated in the...

Page 4: ...iameter mm 125 Focal length mm 940 Aperture ratio 1 7 5 Resolution limit 1 Limiting stellar magnitude 12 0m Finder visual magnification x 6 objective lens diameter mm 30 Focusing device 1 25 2 Tube le...

Page 5: ...actic mount 3S 2D with a counterweight of 3 7 kg Pole finder 6 23 Hand controller Power supply unit Metal tripod Cable 10 m Pier C75R 1000 mm Barlow Lens 2 Eyepieces 1 25 f 6 3 mm f 7 5 mm f 12 5 mm f...

Page 6: ...mm 1 25 f 20 mm 2 f 24 mm 2 f 25 mm 2 Prism for direct observation PP 45 1 25 Eyepiece guide 12 5 mm 1 25 Light filters 28 5 0 6 black neutral yellow blue red green Light filters 48 0 75 black neutral...

Page 7: ...focal plane of an eyepiece 4 For observation convenience the eyepiece assembly is inclined relatively to the telescope axis by 90 with the help of flat diagonal mirror 3 There is a finder integrated...

Page 8: ...he sky that is why the telescope is equipped with an optical finder with a wide field of view With the help of the finder you can easily find the necessary object in the sky and then observe it in the...

Page 9: ...finder s reticle by turning it in spherical joint of the bracket 1 and fix this position with the help of the screw 2 In future it will be enough just to check the coalignment of the optical axes of t...

Page 10: ...uch conditions Observations with the telescope through the window are meaningless as an uneven surface of window glass distorts images Cover the telescope when work is finished and to protect it again...

Page 11: ...ecting mirror 1 and bushing 2 unscrew the camera objective lens Screw a reducing bushing 2 in the camera Insert the camera 1 with a reducing bushing into the eyepiece tube 2 and secure them by the scr...

Page 12: ...ctive s and eyepiece s lenses with 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 et...

Page 13: ...additional alignment of the telescope can appear after optics cleaning or accidental misalignment The telescope alignment should be held by specialists as it requires special skills and qualification...

Page 14: ...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 15: ...______________ is fit for operation Date of issue ______________ 20 ___ Signatures _________________ Manufacturer Federal State Unitary Enterprise Production Amalgamation Novosibirsk Instrument Makin...

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