TEC APO 140 Owner'S Manual Download | Manualshive

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TEC

TEC

APO

APO

140

140

OWNER’S MANUAL

2005

“This telescope is closer to optical perfection more

than any instrument I have ever used before.”

R.Renzi, Italy.

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Summary of Contents for APO 140

Page 1: ...TEC TEC APO APO 140 140 OWNER S MANUAL 2005 This telescope is closer to optical perfection more than any instrument I have ever used before R Renzi Italy ...

Page 2: ...al 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 lb Tube assembly diameter 5 9 150 mm Baffle dia 7 178 mm TA length shortest 34 864 mm Balance point position 14 1 350...

Page 3: ...r 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 f...

Page 4: ...ing capability using a 9 1 Planetary Reduction Assembly coupled to a fine focus knob fig 6 9 The fine focus knob should be used once the image is close to focus and final tweaking is required 2 The two coarse focusing knobs fig 6 8 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 Th...

Page 5: ...ing 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 7 In the event that different equipment such as an optional Field Flattener or AP 2 7 threaded End Cap available from Starlight Instrumen...

Page 6: ...me 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 different methods including test 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 ...

Page 7: ...ratching the tube DOVETAIL PLATE The Dovetail Plate like all other accessories for this telescope is CNC machined for lightness 320g and rigidity from aluminum stock and then black anodized for a tough corrosion free surface Though having the same width and hole pattern as Losmandy plates the TEC Dovetail Plate is only 9 long The shorter length not only allows it to be lighter but also provides yo...

Page 8: ... parts only a Finder Base and a Finder Arm with knob 4 3 2 1 8 7 6 5 9 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 Spring Cover 6 The Finder holder has two 1...

Page 9: ...late 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...

Page 10: ...ted field dia 1 6 3 long extension tube is required for straight through viewing 4 5 FOCUS TRAVEL With the 2 diagonal focusing tube is in the middle position Unvignetted field dia 1 4 camera depth 85 0mm With the Field Flattener focusing tube is in the middle position Unvignetted field dia 2 4 2 5 9 FOCUSING DIAGRAM ...

Page 11: ...40 100 100 OTA price 4000 4250 4600 4750 OTA weight 18 lb 18 lb 18 5 lb 18 5 lb Tube dia 152 4mm 152 4mm 150 1mm 150 1mm 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 Internal baffles 3 4 4 4 Rings latches fixed fixed adjust...

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