TEC APO 140 - Baader Planetarium
Contents
1. TEC FINDERSCOPE BRACKET The TEC Finderscope Bracket is designed to hold a traditional 50mm optical finder or a Red Dot sight This new design requires only 2 k ar thumb screws for alignment It looks 9 and works in a much more elegant way The Finderscope Bracket contains the following parts Finder Base 1 that attaches to the focuser with two 8 32 screws Holding Knob 2 tightening this knob will hold the Finder Arm 3 with Finder Holder 4 to the Finder Base The Finder 9 is spring loaded with spring and screw covered by 1 Spring Cover 6 The Finder holder has two 10 32 set screws 8 on the objective side and two 10 32 Alignment Thumb Screws 5 A special insert 7 must be installed in the finder s body TEC performs this installation for free in any brands Please note that finder diameter Should not be larger than 2 When attaching the finder base to the focuser housing make sure to use screws of the proper length WARNING If the screws are too long they will contact the draw tube and damage its anodized surface Shown on above picture is the Astro Physics Finder bracket with Orion 9x50 finder This combination is less expensive and does not require insert installa tion The Red Dot sights could also be installed This installation requires fewer parts only a Finder Base and a Finder Arm with knob TELESCOPE CASES After you have finished observing2. 7 In the event that different equipment such as an optional Field Flattener or AP 2 7 threaded End Cap available from Starlight Instruments is needed at the end of the focuser the Draw Tube End Cap fig 6 12 can be removed by loosening the 3 6 32 socket head set screw and then unscrewing the back 8 The 2 inch Eyepiece Holder does not use traditional thumb screws This focuser uses an Eyepiece Collet Locking Nut fig 6 14 and an Eyepiece Collet Sleeve This design assures that the eyepiece or imaging equipment is always precisely positioned and held into place during imaging To secure your eyepiece insert the eyepiece into the 2 inch opening making sure that the nut has been turned counter clock wise to open the collet sleeve and push in the eye piece Tighten the Collet Nut clockwise until it is tight WARNING Failure to tighten the Collet Nut can result in personal injury and or damage to equipment Always make sure that the eyepiece is secured properly dur Ing use WARNING Never point to the sun without proper filtering or without the Front Cover in place Failure to do so can result in personal injury or damage to the collet locking sleeve and or optics The Collet Locking Sleeve is plastic and can melt if it gets too hot Possible fumes during melting can cause fogging or damage to the optics 9 If a finder base is to be attached to the focuser housing make sure that the screws being used are the proper length WARNING If th
3. 7 Ip 1 Front Cover made of Aluminum push pull type It protects the optics and holds the baffle during transportation 2 Retractable Sliding Baffle This feature makes the OTA shorter for handling and transportation The open end of the baffle is rounded to improve aerodynamics of the front end of telescope Rounded edge creates less turbulence compared to straight cut baffles 3 Baffle flange It holds the baffle with four 4 40 Button Head Screws 4 Tube assembly The tube interior is coated with special light absorbent coating and has 4 sharp edge baffles which block internal reflections 5 OTA Focusing Mounting Flange It is part 6 1 in the focuser description 6 Focuser See following Instructions written by Detlef Schmidt Starlight Instruments Inc The focuser s tube is coated inside with the same special coating as the tube assembly To remove cover put thumb and index fingers into the sliding latches and move them in the shown directions 7 Plug It is a small part that keeps the focuser end closed 2 FEATHER TOUCH FOCUSER MODEL 3545 Care and use of the Feather Touch 3545 The Feather Touch 3545 was a collaboration design effort between Telescope Engineering Co and Starlight Instruments for TEC s line of fine refractors It was designed to provide the user the with the best possible control while focusing using a 9 1 fine focus reduction assembly along with other features
4. after sale for unlimited time Yuri Petrunin TEC President TEC APO140 UPDATES RUN 2002 RUN II 2003 RUN III 2004 RUN IV 2005 QTY plan made 40 35 40 40 gt 100 gt 100 OTA weight 18 Ib 18 Ib 18 5 Ib 18 5 Ib Tube type drawn drawn machined machined Labeling no yes yes yes Color OTA Baffle white black white white white white white white Internal paint ultra flat black spray ultra flat black spray special coating special coating oO IN IN aN Internal baffles Rings latches fixed fixed adjustable adjustable Cover material style Plastic screw type Plastic screw type Al push pull Al push pull A virtually perfect textbook image both in and out of focus This is my first time to experience such perfection in this regard My subjective evaluation put the optics at 1 8 to 1 16th wave M T Japan 10
5. and are looking for a safe place to store your telescope the best place would be a case We have two types avail able Scopeguard Case shown on the left a foam fit ted carrying case that will keep your scope in the best condition for years You can even keep the Tube rings and plate on the OTA this set up fits in the Case The second case shown below is Aluminum trans portation case made in Germany It has hard foam AF interior with a few special sections that allow to AT hold the APO140 with rings plate and Finder with bracket without removing it 2 AP diagonal 5 of 2 eyepieces Dimensions of AL case are 10 x 13 5 x 37 Weight net 13lb Weight with scope rings plate finder bracket AP diago nal 2 eyepieces appr 40lb ACCESSORIES Eyepiece Turret with Mahogany case Precision holder for five 1 25 eyepieces Diagonal mirror made of Sitall or Quartz Case safely holds six 1 25 eyepieces and I Turret Case dimensions 5 5 x 8 25 x 10 75 weight 2lb This new component will let you gt oT INSTRON change your favourite eyepieces bn How very fast just click from one to S F the next one and enjoy observing Latest updates for this manual or new accessories are available on our web www telescopengineering com and on TEC scopes users group http groups yahoo com group tec scopes 8 FOCUSING DIAGRAM Focusing tube is completely IN Unvignetted
6. socket head cap screws The position of the pinion assembly relative to the rack is precisely adjusted by Starlight Instruments using 4 flat bottom set screws internal to the pinion assembly to provide the minimum amount of backlash between the rack and the pinion for ease of operation The other adjustment that is made is to align the pinion axis to be parallel to the rack face NOTE It is possible to reverse the pinion assembly for left handed preference but Starlight Instruments does not recommend the user reversing this assembly because of possible misalignment resulting in a loss of performance or possible damage Please contact Starlight Instruments or TEC if this change is desired 3 4 The Feather Touch 3545 focuser is assembled to the OTA via the Focuser Mounting Flange fig 6 1 and the Focuser Locking Collar fig 6 2 Loosening the focuser Locking Collar allows the focuser to be rotated to any position relative to the telescope for ease of use Once the focuser has been positioned it can be locked by turning the Locking Collar by either grab bing the grooves on this collar or by grabbing the optional Locking Stems and rotating the Locking Collar clockwise until it is tight The Locking Stems help to provide a better grip for tightening the collar They can however be replaced with the 10 32 Button Head Cap Screws for a cleaner look if that is desired NOTE The focuser can be removed by loosening the Locking Collar and unscrewing i
7. TEC APO 140 This telescope is closer to optical perfection more than any instrument have ever used before R Renzi Italy OWNER S MANUAL 2005 IMPORTANT PLEASE READ THIS MANUAL BEFORE USING YOUR TELESCOPE SAFETY WARNINGS Do not look at the sun through the telescope Viewing the sun through the telescope without special equipment Solar Filter will cause permanent visual impairment and telescope parts damage Do not disassemble Disassembly of telescope could result in personal injury and telescope malfunction CONTACT INFORMATION If you have any questions or need assistance please contact us Phone 303 273 9322 e Fax 303 273 0204 E mail tec telescopengineering com e Web site www telescopengineering com User s group site http groups yahoo com group tec scopes Address Telescope Engineering Company e 15730 West 6 th Ave Golden CO 80401 USA TEC APO 140 TECHNICAL SPECIFICATIONS Clear aperture 5 5 140 mm Focal length 980 mm Focal ratio 7 0 Image scale 3 5 arc min mm Resolution theoretical 0 8 arc sec Focuser Feather Touch 3545 Eyepiece holder 2 Collet type Focusing range 4 5 114 mm One turn focus travel Coarse 21 5 mm Fine 2 3 mm Back focus distance 6 7 170 mm Focuser load capacity 10 Ib Tube assembly diameter 5 9 150 mm Baffle dia 7 178 mm TA length shortest 34 864 mm Balance point position 14 1 350 mm 25 mm from the focuser flan
8. andy plates NOTE From user feedback it is better and more safe to keep rings on the OTA all the time if possible this way there is no chance nd i O j i A J F j s paar i i z a m 7 00 hea i es for scratching the tube DOVETAIL PLATE 3 oH i na The Dovetail Plate like all other accessories for a this telescope is CNC machined for lightness 320g and rigidity from aluminum stock and then black anodized for a tough corrosion free Surface i Though having the same width and hole pattern 37 as Losmandy plates the TEC Dovetail Plate is only 9 long The shorter length not only allows it to be lighter but also provides you the convenience of being able to retract the Front baffle for storage without having to move the tO ore 7 OD a The upper and lower bases have the same threaded 1 4 20 holed pattern to fit TEC Astro Physics or Losmandy plates 4 08 n y k OTA inside the rings as would be the case if longer plates were being used The TEC Dovetail Plate is compatible with Losmandy WYO or Casady Saddle systems Two 8 32 security screws must be installed on each end of the Plate these security r screws prevent the dovetail and OTA from accidentally slipping off the E dovetail holder Mean cas G1 r 03 GA isin w aa Are Dalbes paaa T rarer 8 32 threaded holes for security screws atar DA imigh fia Finian ey 50 6
9. erent methods including test 1 2 3 plates autocollimation test with an artificial Star interferometry however we do not supply test results to avoid any kind of misinterpretations or numbers com petition between customers Each objective assembled in precision thermocompensation cell 1 that contains Three Lenses Sealed Construction 2 with a special oil between lenses and Threaded Ring 3 The Threaded Ring of each objec tive is engraved with serial number of OTA The optics are collimated at the shop dur ing assembly and do not require any addi tional adjustments Collimating assembling and sealing require special equipment and techniques and must be done only by quali fied technician WARNING NEVER TRY TO DISASSEM BLE THE OBJECTIVE DISSASSEMBLY OF THE OBJECTIVE WILL RESULT IN SERIOUS DAMAGE TO THE MOST EXPENSIVE PART OF YOUR TELESCOPE THE OPTICS s ACCESSORIES TUBE RINGS CNC machined black anodized aluminum compact and lightweight design with stainless steel latches set of two rings weights 750g Ring dimensions and hole pattern are shown in the sketch below Each ring contains Upper Base 1 Latch 2 and Lower Base 3 Latches for the scopes of the third and forth run are adjustable The screw 5 has a Phillips type head for easy adjustment the small nut 4 will hold screw in place after adjustment Rings can be attached to the mount with either TEC Dovetail plate AP or Losm
10. ey are too long they will contact the draw tube thereby causing dam age to the anodized surface of the draw tube WARRANTY Starlight Instruments Incorporated guarantees this product to be free of any defects in materi al or workmanship for 3 years to the original owner Disassembly of focuser outside of the described items voids all warranties Starlight Instruments Inc e P O Box 68282 Schaumburg IL 60168 0282 USA Phone 847 985 9595 4 OPTICS APO140 is an Aplanatic Oiled Triplet refractor with ED glass FPL 53 as a middle element The color correction is optimized for visual use with focus shift less than 0 02 from 436nm to 1000nm Calculated Strehl for e line 546nm is 0 99 Intereferometry of the first run 436nm lenses showed that the aver age Strehl is close to calculated tanm with a very smooth wave front and RMS less than 1 50 546mm The oiled design has only two air to glass surfaces The result is a higher contrast image because of much less scatter S007 and veiling glare due to inter nal reflections comparing to air spaced objectives The outside surfaces of front and rear lenses are coated with 7 layers of antireflective coating that reduce light reflection to the average 0 25 in range of 400 700nm Shown on the left is a sample of interferome try of typical objective with appr RMS less than 1 50 and wave front error less than 1 10 The lenses are tested during manufac turing with diff
11. field dia 1 0 d 7 0 BACK FOCUS n d g d 7 N a a i Focusing tube is completely OUT Unvignetted field dia 1 6 3 long extension tube is required _ for straight through viewing J gt 4 5 FOCUS TRAVEL A A z A 4 4 i With the 2 diagonal focusing tube is in the middle position Unvignetted field dia 1 4 7A sl i N N NX N N h N J i S a co A A A A A 4 A A A E With the Field Flattener focusing tube is in the middle position EEES Unvignetted field dia 2 4 i 7 E az NI N N SL p Sti ie e erhmhmh CL camera de 85 0mm y 4 4 y z 4 Ma F _ a i Pi Cleaning The tube assembly and front baffle are powder coated to clean them use water with a soap or mineral spirits paint thinner do not use Acetone or other strong chemicals Please contact us if you need the lens to be cleaned Handling Handling telescope around and it s transportation to the observing site requires careful handling If you find any problems or have any comments please call us for assistance Telescope Engineering Company is commited to serving it s customers
12. ge fig 5 OTA weight 19 Ib 8 6 kg for tube rings add 2 Ib Lens coatings Broad band 7 layers antireflection coating BBAR Price 2005 4750 Includes Optical tube assembly front cover plug OPTIONAL EQUIPMENT see www telescopengineering com for the current prices Tube rings 250 ScopeGuard case 350 Aluminum transportation case Germany 460 Finderscope bracket with base 120 7X50 finder Japan 120 AP finder bracket 60 TEC 9 dovetail plate 70 TEC 12 dovetail plate 90 Eyepiece Turret 500 Mahogany case for I Turret 150 Field Flattener 600 J OVERVIEW This manual has been written to help you enjoy using your TEC APO 140 refractor APO 140 has a number of features that in a given combination are rarely found in one scope Precision apochromatic objective with modern coating that makes lenses almost invisible Retractable baffle Light tube assembly FeatherTouch 360 rotatable focuser with coarse and fine focusing Collet type eyepice holder Line of accessories including Precision tube rings with adjustable latches Dovetail plate same width and fit as Losmandy plates Finder bracket with new principle of finder adjustment Choice of two kind of cases All parts of the telescope including optics coatings etc are made in the USA GETTING TO KNOW YOUR TELESCOPE The parts of the telescope and their functions are identified and described below 1 2 3 4 TEG APO 140 5 6
13. t completely and then pulling the focuser from the Adapter Flange This should only be done in rare circumstances and after contacting Starlight Instruments or TEC because of possible damage that may result 5 The Draw Tube fig 6 10 is fitted with 3 Stainless Steel wear strips fig 6 11 These strips provide very low friction between the Housing fig 6 7 and the Draw Tube fig 6 10 There is no lubrication required on these parts and an occasional cleaning of the Draw Tube and the Stainless Steel Wear Strips with a damp paper towel to remove any grit or dirt is advisable The design is such that as the focuser is racked in and out the wiping action of the Wear Strips on the mating surfaces tends to be self cleaning 6 The drag between the Focuser Housing fig 6 7 and the Draw Tube fig 6 10 can be adjusted in using two adjustment methods The Tension Adjustment Screw can be adjusted using a 3 16 inch Allen wrench Only a slight amount of rotation on this screw makes a notable difference Tightening this screw will allow larger loads to be lifted without the focuser moving from the dead weight that may be attached to it and it will also decrease the amount of deflection during positional changes during long exposures Generally the factory settings Should be sufficient for most applications In addition adjustment can be done in a simpler way by tightening a thumb screw not Shown in picture but easy to find under the pinion assembly
14. that make the use of the telescope simple and functional All efforts were taken to design it with the best available materials and technology to achieve long last ing functionality and reliability art Description 1 OTA Focuser Mounting Flange oar 2 Focuser Locking Collar 6 2 3 Locking Collar Stems 5 Tension Adjustment Screw 6 Finder Base Screw Holes Plugged with 2 8 32 Button Head Screws Focuser Housing Coarse Focus Knobs Fine Focus Knob 6 7 P 6 6 6 6 6 6 7 6 8 6 9 6 10 Draw Tube with mm scale 6 11 Stainless Steel Wear Strips oia 6 12 Draw Tube End Cap 6 13 Draw Tube End Cap Locking Screws 6 14 Eyepiece Collet Locking Nut 6 15 Eyepiece Collet Sleeve not shown 6 10 being under the plug fig 7 ii Description of Design Features 42 1 The Feather Touch 3545 achieves excel lent focusing capability using a 9 1 6 13 Planetary Reduction Assembly coupled to a fine focus knob fig 6 9 The fine focus Ad knob should be used once the image is close to focus and final tweaking is 6 15 required 2 The two coarse focusing knobs fig 6 8 7 on each side of the focuser allow quick rough positioning of the eyepiece or imag ing equipment They are coupled to the rack and pinion set and the fine focus knob 3 The assembly incorporating the focusing knobs the pinion and it s housing is called the pinion assembly not shown This assembly is attached to the focuser housing using 2 6 32
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