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Summary of Contents for NPZ TAL-100RS
- Page 1 TAL REFRACTING TELESCOPES TAL-00RS TAL-25R INSTRuCTION mANuAL...
- Page 2 NPZ Optics State Corp. (Novosibirsk Instrument-making plant) D. Kovalchuk 79/2 Novosibirsk, 630049 RuSSIAN FEDERATION Fax +7 3832 26594 prinsib@sol.ru; www.npzoptics.com...
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Page 3: Table Of Contents
Table Of CONTeNTS Page General instructions......4 Technical specifications ...... 5 Inventory list ........ 6 Construction of the telescope .... . . 8 Preparing telescope for observations .... Assembling the telescope ...... . . Balancing the telescope ......2 Aligning the finder scope ...... 1 3 Power supply and hand controller ..... 1 4 Polar alignment ........5 Calibrating the setting circles ..... . . . 7 Observations ........8 Visual observations ....... . 8 Astrophotography ....... . . 9... -
Page 4: General Instructions
GeNeral INSTruCTIONS Warning! Never observe the Sun directly through your telescope or its finder scope - permanent eye damage could result. Do not let children hold observations through telescope without adult’s control. The telescope is designed for visual observations of celestial ... -
Page 5: Technical Specifications
TeCHNICal SPeCIfICaTIONS Specification Tal-100rS Tal-125r aperture, mm focal length, mm 000 25 focal ratio 1:10 Telescope magnification, x 40; 60; 45; 80; resolving power ,3" " limiting visual magnitude ,2 2,0 Finderscope magnification, x finderscope aperture, mm ,25";2" ,25";2" focuser о о... -
Page 6: Inventory List
INVeNTOry lIST Component Tal-100rS Tal-125r Telescope finderscope: Polar axis finderscope 6 equatorial mount MT-3S (MT-3S-2D): with counterweight 2.2 kg with counterweight 3.7 kg Tripod: wooden metal Power supply Hand controller Power cord (10 m) Spare parts and accessories: Plossl eyepiece f’=6.3mm Plossl eyepiece f’=25mm Reticle T-adapter M42x0.75 Instruction manual Optional accessories:... - Page 7 Component Tal-100rS Tal-125r Ultra wide angle eyepieces (80°): f’=15mm (1.25’’) f’=20mm (2’’) f’=24mm (2’’) f’=25mm (2’’) Direct observation lens: PP-45° (1.25”) PP-45° (2”) 2x Barlow lens 3x Barlow lens Guide eyepieces 12.5mm (1.25’’) Off-axis guider (2’’) Color filters M28.5x0.6: black neutral yellow blue green Color filters M48x0.75: black neutral yellow blue green Power cord extension cable with car adapter (10m)
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Page 8: Construction Of The Telescope
CONSTruCTION Of THe TeleSCOPe The telescope consists of three main parts: optical tube assembly (OTA) (1), German equatorial mount (2), a pier or tripod (3). The optical tube is a basic component of the telescope. It includes all main optical units such as a primary mirror, a corrector and an eyepiece unit with focusing mechanism. A Refractor Telescope: parallel beam of rays enters the tube of the telescope and is projected at the focal plane of the eyepiece (2) with the help of achromatic eyepiece (1). For comfort observations eyepiece ... - Page 9 All lenses surfaces are covered with antireflecting coating. The eyepiece unit includes a focuser with an eyepiece tube. Focuser of frictional type consists of an axis with handwheels (1) for shifting an eyepiece tube. Smoothness of an eyepiece motion is regulated with a screw (2). Screw (3) fixes an eyepiece tube in the adjusted position. The equatorial mount is designed for pointing the telescope at the celestial objects and tracking their movement.
- Page 10 For the first sight-in on the object, loosen the telescope’s Dec. and R.A. locks (1) and move the teles- cope to center an object in the field of view. The fine alignment is done by manual Dec. slow-motion controls (2) on Dec. axis, and R.A. slow- motion controls (3) embedded into the clock drive. The polar axis has embedded polar axis finderscope (optional) (4) and is fixed in a tripod (pier) mounting head with a latitude dial. The pier serves for holding an equa- torial mount with an OTA. It consists of the tube and three attachable legs. The tripod can be better used on a rugged terrain.
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Page 11: Preparing Telescope For Observations
PreParING TeleSCOPe fOr ObSerVaTIONS aSSeMblING THe TeleSCOPe Take a tripod out of the package. Place the pier on a firm plain surface. Regulate the needed height with help of pullout legs, which are fixed by knobs (1). The pin (2) should be oriented to the North. The tripod is equipped with an accessory shelf (3) for comfort observation. Take the equatorial mount out of the package and place it on the top of the tripod. -
Page 12: Balancing The Telescope
Place the finderscope bracket (1) in the wedge slides. Fix the finder- scope with six thumbscrews (2). balaNCING THe TeleSCOPe To provide a smooth motion of the telescope and reliable operation of equatorial mount drives, the balancing of the telescopes is required. Place the polar axis in the horizontal position (0° on the latitude dial), using the width adjustment mechanism (1) with the loosen slow-motion control (2). Enable unrestricted motion of the polar axis, turning the handle (1) counter clock-wise. Slide the counterweights along the counterweight shaft until they counterbalance the OTA. -
Page 13: Aligning The Finder Scope
alIGNING THe fINDer SCOPe High magnification of the main telescope makes it difficult to find a required celestial object in the sky because of the small field of view. This is why the telescope is equipped with a low-power finder scope with a wide field of view. The finder scope makes it easier to locate the object you want and then to observe it in the field of view of the telescope. However, for the proper use of the finder scope, it must be aligned with the main telescope, so that both the finder scope and the telescope point at the same position in the sky. Place the crosshair (2) into the eyepiece f’=25mm (1) and then insert the eyepiece in the focuser tube (3). Point the telescope at the distant object (at least 400 meters/yards away), and then center it in the telescopic field of view using the reticle. Fix telescope in this position with the R.A. and Dec. locks. -
Page 14: Power Supply And Hand Controller
POWer SuPPly aND HaND CONTrOller Warning! always connect power supply to the mount using the power cord with power supply disconnected from the power outlet. use only original manufacturer’s power supply fuse or analogue (consult your dealer). always disconnect all the power, if replacing the power supply fuse. -
Page 15: Polar Alignment
If the telescope is used in the Southern hemisphere, the direction of the clock drive rotation must be changed. This is done with help of switcher inside the hand controller. Open the hand controller cover and place the inside switch with «N/S» (North/South) markings in the required position. POlar alIGNMeNT Due to the Earth’s rotation, celestial objects move in the telescope field of view (the higher telescope magnification - the faster those movements appear). Polar alignment of the telescope allows more comfortable observations, because you can follow objects by moving the telescope about one axis, the polar axis (or Right Ascension (R.A.) axis), which is in parallel with the Earth’s axis. Release the latitude lock (1). Using ... - Page 16 For visual observations point the R.A. (polar) axis of the telescope Polaris towards Polaris ( UMi). See the α picture. With this level of pointing accuracy, very little use of the Dec. slow-motion control is nece- ursa major ssary for celestial objects tra- cking. Less correction is required, when polar alignment is done more precisely. more precise polar alignment is required for astrophotography. MT-3S mount equipped with ...
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Page 17: Calibrating The Setting Circles
CalIbraTING THe SeTTING CIrCleS R.A. and Dec. axes have setting circles, which enable observer to locate an object in the sky by its celestial coordinates – right ascension (R.A.) and Declination (Dec.). Calibration of setting circles is done after polar alignment of the telescope. Level the Dec. axis (put it in the horizontal position) and by rotating R.A. setting circle put it in a «0» (zero) position (see picture). For the Dec. setting circle calibration find a bright star from the star atlas, and bring selected object to the center of the telescopic field of view. -
Page 18: Observations
– first in the finderscope and then in the main telescope field of view, when observing through the eyepiece. Use focus knobs to focus, when changing eyepieces. Provided eyepieces give several magnification options for an observer. Tal-100rS Plossl f'=25 mm Plossl f'=6.3 mm Tal-125r Plossl f'=25 mm Plossl f'=6.3 mm... -
Page 19: Astrophotography
aSTrOPHOTOGraPHy Astrophotography is executed with compact reflex camera with objective thread M42x1 (M42x0.75 thread camera adapter is also supplied with the telescope). To mount the camera on the teles- cope, take the mirror (1) and a camera adapter (2) away and unscrew the camera objective. Screw the camera adapter into the focuser drawtube. Attach the T-ring (T-adapter) to the camera and thread it onto the ca- mera adapter. -
Page 20: Maintenance
MaINTeNaNCe In order to keep telescope in good operating condition one should provide good care and maintenance for the instrument. Please note that lens or mirror surfaces should be cleaned as infrequently as possible, only when absolutely necessary. Optics self-cleaning only permitted after expiration of manufac- turer limited warranty! Keep telescope clean and protect it from any physical damage. Use a clean, soft cloth to remove dust from all metallic surfaces. Then wipe them with a cloth wetted in acid-free vaseline and dry with a napkin. Wipe the objective and eyepiece lenses by dry linen napkin. Grease spots remove by cotton cloth, wetted with the pure spirit (alcohol). Use the cotton cloth, wetted with the pure spirit (alcohol), without pressure to clean the secondary mirror surface, having removed dust from their surfaces by soft brush first to avoid small scratches. Keep the dust cover on the front of the telescope and the end cap ... -
Page 21: Collimation (Alignment) Of The Optics
COllIMaTION (alIGNMeNT) Of THe OPTICS In case of accidental mirrors misalignment or after cleaning optical parts, telescope collimation might be necessary. Set the Plossl f’=6.3 mm into the OTA. Point the telescope to any star of magnitude. Take away the cup (1) and secure star diffraction image with help of four knobs. Star diffraction image should have round kernel and not more than 2 round rings. Breaks and kernel form change are not allowed. -
Page 22: Storage
STOraGe The telescope must be kept in a clean, dry (humidity must not exceed 80%), 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 23: Acceptance Certificate
aCCePTaNCe CerTIfICaTe Telescope ____________ , serial # ___________ Equatorial mount, serial # _____________ Passed the product approval and found serviceable. Manufacturing date __________________ Signatures _____________________... -
Page 24: In The Northern Hemisphere
Appendix A brightest stars visible in the Northern Hemisphere Declination r. a. Visible Star Constellation 2000.0 2000.0 magnitude о Alpheratz α And Andromeda 2.07 о mirach Andromeda 2.07 β And о Polaris ursa minor .97 α umi о Mirfak Perseus α Per .79 о Aldebaran α Tau Taurus 0.87...
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