NPZ TAL-65 Instruction Manual Download

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TeChNICal SPeCIfICaTIONS



Aperture

65 mm



Focal length

500 mm



Telescope magnification and angular field

With eyepiece f’ = 5mm

°5'

With eyepiece and Barlow lens

0°5'

With eyepiece, Barlow lens and plug

0°5'



Resolving power

.''



Limiting visual magnitude



Right ascension turning angle

360° (4h)



Declination turning angle

±90°



Latitude adjustment range

0…90°



minimum observation range

~ 5 m



Dimensions, mm

OTA* length

470

Telescope height



Telescope weight

3.6 kg

*Optical Tube Assembly

Summary of Contents for TAL-65

Page 1: ... TAL 65 REFLECTING TELESCOPE Instruction manual ...

Page 2: ... NPZ Optics State Corp Novosibirsk Instrument making plant D Kovalchuk 179 2 Novosibirsk 630049 RUSSIAN FEDERATION Fax 7 3832 261594 prinsib sol ru www npzoptics com ...

Page 3: ... telescope for observations 8 Balancing the polar axis 8 Balancing the declination axis 9 Observations 10 Collimation alignment of the optics 12 Maintenance 13 Storage 14 Acceptance certificate 15 Dew to continuous product improvements specifications are subject to change without notice 09 03 Table of Contents ...

Page 4: ...e TAL 65 hereinafter referred to as the telescope is designed for visual observations of celestial objects The telescope can be used for individual observations by ama teur astronomers in the schools in the astronomic societies The telescope may be used at an ambient temperature ranging from 30 to 30 C and the relative humidity not more than 80 on the assumption of fair weather Read instruction ma...

Page 5: ...e and Barlow lens 90х 0 25 With eyepiece Barlow lens and plug 130х 0 15 Resolving power 2 2 Limiting visual magnitude 11m Right ascension turning angle 360 24h Declination turning angle 90 Latitude adjustment range 0 90 Minimum observation range 25 m Dimensions mm OTA length 470 Telescope height 620 Telescope weight 3 6 kg Optical Tube Assembly ...

Page 6: ... Inventory list 1 Telescope 1 2 Counterweight 1 3 Eyepiece 1 4 Barlow Lens 1 5 Plug 1 6 Black filter 1 7 Box 1 8 Instruction manual 1 Component pos Quantity ...

Page 7: ...lescope and is projected at the focal plane of the eyepiece 3 with the help of primary 1 and diagonal 2 mirrors It is necessary to use black filter 4 having established it on the eyepiece while observing the solar events The primary mirror is spherical the diagonal mirror is flat Both mirrors are covered with high reflection aluminum coatings with protective level For flash reduction the internal ...

Page 8: ...arlow lens then the eyepiece the maximum 130x magnification is obtained The more the magnification of the telescope the less the angular field of view This is why the observation is recommended to begin with the minimum magnification gradually increasing it The equatorial mount is designed for pointing the telescope at the interesting objects The mount with the optical tube are secured on the heig...

Page 9: ...sh the telescope on the flat hard surface Screw the axis with the counter weight 3 Place the polar axis in the hori zontal position 0 on the latitude dial Release the handle that fixes the polar axis Slide the counter weights along the counterweight shaft until they counterbalance the OTA Fix the polar axis Preparing telescope for observations To provide a smooth motion of the telescope and reliab...

Page 10: ...he telescope field of view the higher telescope magnification the faster those movements appear More precisely polar alignment is done less correction is needed For visual observations point the R A polar axis of the telescope towards Polaris α UMi See the picture The tripod should be fixed in this position while observation is hold This way the polar axis will be oriented to the celestial pole Us...

Page 11: ...hould be made with help of clamps 2 6 and slow motion controls 1 7 Set the eyepiece into the focuser 2 To change magnification use Barlow lens and plug see Const ruction of the telescope Slow motion controls 1 are used for best clarity When the sun is observed set the black filter 4 on the eyepiece 3 Minimum magnifications are used when the wide field of view is needed For example when star accumu...

Page 12: ...anges this is why let the mirror acclimatize first while observing outside in winter season Avoid observations through a window if the inside and outside temperatures differ more than 2 3 C Otherwise temperature differences cause images to look blurred and distorted so that observations are meaningless It is necessary to preserve telescope from vibrations and knock for high quality observations ...

Page 13: ...ction is off centered While carefully rotating one of the three alignment screws 1 check the direction of the reflection displacement Choose the screw and direction to center reflection All screws are glued with the glue Use a spirit to turn off the screw Collimation alignment of the Optics Collimation alignment of the optics is permitted only in case of absolute necessity and after expiration of ...

Page 14: ...rror surface and then rinse the mirror under a stream of water Wait till the water trickles away Swab remaining water drops from the surface with a dry cloth edge To clean the secondary mirror use the same procedure Use only quality optical lens cleaning tissue and optical lens cleaning fluid specifically designed for multi coated optics to clean your eyepieces and finderscope Lens or mirror surfa...

Page 15: ...dust free place with an ambient temperature between 5 and 40 C Avoid collision and shaking of the telescope It is prohibited to store acids alkalis and any chemically active substances which may produce evolved gas or vapor harmful for the optics at the same place with the telescope ...

Page 16: ...viceable Manufacturing date __________________ Signatures _________________________ NPZ Optics State Corp Novosibirsk Instrument making plant D Kovalchuk 179 2 Novosibirsk 630049 RUSSIAN FEDERATION Tel 7 3832 283183 Fax 7 3832 261594 prinsib sol ru www npzoptics com Acceptance certificate ...

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