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Table of Contents
Related Manuals for Takahashi FOA60-K
Summary of Contents for Takahashi FOA60-K
- Page 1 Instruction Manual TAKAHASHI...
- Page 2 Fluorite Ortho Apochromat. This telescope is a doublet apochromat with ideally positioned lenses: one fluorite lens, and another new lens used by Takahashi for the very first time in this telescope. This combination has achieved a delicate correction of the spherical aberration, and can produce images with almost no color aberration.
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Page 3: Warning & Caution
Warning & Caution WARNING WHEN THE TELESCOPE IS DIRECTED TO DANGER THE SUN, ITS LIGHT AND HEAT ARE BOTH INTENSE AND DANGEROUS. NEVER TRY TO VIEW THE SUN. DOING SO WITHOUT P R O P E R E Q U I P M E N T M AY C A U S E PERMANENT BLINDNESS. -
Page 4: Table Of Contents
Table of Contents Warning & Caution ----------------------------------------- 3 Table of Contents ------------------------------------------ 4 Specifications ----------------------------------------------- 5 Tube Assembly Layout ----------------------------------- 6 Set Up Procedures ---------------------------------------- 7 Focusing ----------------------------------------------------- 10 Finder Adjustment ---------------------------------------- 11 Observation ------------------------------------------------ 12 Accessories ------------------------------------------------ 13 What is Fluorite? ------------------------------------------ 19 Care &... -
Page 5: Specifications
Specifications Configuration --------------------------- Fluorite Ortho Apochromat Doublet Effective Aperture --------------------- 60mm all surfaces hard-multi-coated Effective Focal Length --------------- 530mm Effective Focal Ratio ----------------- 1:8.8 Resolving Power ---------------------- 1.93” Limiting Magnitude ------------------- 10.7 Light Gathering Power --------------- 73X With Flattener 0.93× Effective Focal Length ------------- 495mm Effective Focal Ratio ---------------- 1:8.2 Image Circle -------------------------- φ... -
Page 6: Tube Assembly Layout
Tube Assembly Layout Dew Shield Cap Dew Shield Dew Shield Lock Screw Main Tube 6x30 Finder Scope Focuser Housing Focusing Knob Finder Bracket Drawtube 50.8(2") AD Ring (FOA-60) 50.8(2”) Adapter (SKY-90) Drawtube Clamp 50.8(2”) Extension Tube L 50.8(2”) Sleeve Coupling S 31.7(1¼”) Eyepiece Adapter Eyepiece Adapter Cap - 6 -... -
Page 7: Set Up Procedures
Cap Bolt the tube assembly. The tube holder can be used with all Takahashi mounts. If using this equipment for astro-imaging, the heavier duty the mount, the better. Tube Holder... - Page 8 ◆ Balancing ◆ Retractable Dew Shield Now that the telescope has been attached The dew shield of the FOA-60 is retractable. to the mount, it is necessary to balance To transport, it can be retracted and when the load in the R.A. and the Dec. When observing, it can be extended to stop stray unbalanced, the clamps and the gearing of light coming into the tube.
- Page 9 Abbe 4mm - 32mm ▼Erfle Plastic Ring With 3-group 5-element optics, 60 degree apparent field of view, almost no flare and ◆ Takahashi Eyepiece ghost, available in: ・31.7mm (1¼”) barrel A wide variation of eyepieces are available Er-28mm from Takahashi.
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Page 10: Focusing
Focusing A f t e r i n s e r t i n g a n e y e p i e c e i n t o t h e ◆ Focusing Process telescope, it is necessary to achieve Remove the dew shield cap and the the best possible focus. -
Page 11: Finder Adjustment
Finder Adjustment In the view field of a telescope, the image ◆ Finder Alignment Procedures is seen highly magnified so it is so difficult 1. Set up the telescope for visual use to get a desired object in the field of view. according to the system chart and attach Also when photographing an object with a a low power eyepiece. -
Page 12: Observation
DSLR camera with the is advisable to use a high quality 90-degree T-Mount DX-S, which is available for EOS prism. The Takahashi 90-Degree Prism is a or Nikon. quality multi-coated prism, which allows the In imaging the lunar surface, it is well... -
Page 13: Accessories
Accessories Takahashi offers a wide variation of system parts for the FOA-60, including: ◆ Diagonal Mirror 50.8 (2") ◆ Diagonal Prism 31.7(1¼”) MC When the Diagonal Mirror or the Diagonal Prism is used, the light path length will be longer; so to get focus, you must turn the focusing knob more. - Page 14 ◆ 31.7(1¼”) 2X Barlow Lens This can extend the focal length of the 31.7(1¼”) Eyepiece FOA-60 by 2X in visual use, keeping the aberration to a minimum. Barrel size is 31.7mm (1¼”) and it can be used with the Diagonal Mirror 50.8 (2") by way of the Adapter (DM).
- Page 15 ◆ Flattener 0.93X ▼Imaging System The Flattener 0.93X with 2-group 2-element with the Flattener 0.93X keeps the sharp image at the center of the field of the FOA-60 as it is. At the same Effective Focal Length : 495mm time, it can correct the edge aberration Effective Focal Ratio : f/8.2 at the prime focus and can shorten the Image Circle : φ...
- Page 16 FOA-60 to 900mm (f/15.0), offering highest counter-clockwise to separate them. optical performance of all Takahashi optical 2. Attach the Extender 1.7XR to the focuser systems. Over the full range of the visible unit by turning it clockwise until attached.
- Page 17 ◆ Extender ED 1.5X ◆ Extender Q 1.6X (50.8/2") The focal length of the FOA-60 is as short as The T-Mount DX-WR is required to attach a 530mm. In order to get high magnifications, DSLR. Use the T-Mount optionally available, eyepieces with shorter focal lengths must according to the camera model.
- Page 18 So, rebalance it according magnified imaging, and can also simply to the instruction of the Takahashi adjust the magnifying rate, as you like, by m o u n t s . I f t h e D e c . c l a m p s a r e sliding the magnifying tube.
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Page 19: What Is Fluorite
What is Fluorite? In 1979, Takahashi became aware of The fluorite element with its excellent the superior optical performance of a performance is used in various high quality telescope that used a fluorite element objective. Chemically the fluorite element is... -
Page 20: Care & Maintenance
Care & Maintenance ▼Optical Axis T h e n u s i n g c o t t o n s w a b s s l i g h t l y Before shipment, the optical axis of your moistened with telescope lens cleaner, telescope has been precisely adjusted dab the surface, changing cotton swabs... -
Page 21: System Charts
System Charts ◆ Visual/Imaging System Chart ▼Standard Accessories 10. TKP28001 50.8 (2") AD Ring (FOA-60) 13. TKP00113 50.8/2” Sleeve 14S. TKP00103 Coupling S 46. TKP00101 31.7(1¼”) Eyepiece Adapter 69. TKP35110 50.8 (2") Adapter (SKY-90) 71L. TKP31112 50.8 (2") Extension Tube L To the Extender 1.7XR system ▼Optional Accessories... - Page 22 ◆ Extender 1.7XR System Chart ▼Standard Accessories 10. TKP28001 50.8 (2") AD Ring (FOA-60) 13. TKP00113 50.8 (2") Sleeve 14S. TKP00103 Coupling S 46. TKP00101 31.7 (1¼”) Eyepiece Adapter 69. TKP35110 50.8 (2") Adapter (SKY-90) 71L. TKP31112 50.8 (2") Extension Tube L ▼Optional Accessories 27.
- Page 23 ◆ Extender ED 1.5X System Chart ▼Extender Q 1.6X (50.8/2") System Chart ▼Standard Accessories ▼Optional Accessories 10. TKP28001 50.8 (2") AD Ring (FOA-60) 27. TKA00404 4-Turret Eyepiece Holder 13. TKP00113 50.8 (2") Sleeve 32. TKA01250 T-Mount DX-S (EOS) 14S. TKP00103 Coupling S TKA01254 T-Mount DX-S (Nikon) 46.
- Page 24 TAKAHASHI SEISAKUSHO Ltd. 41-7, Oharacho, Itabashiku, Tokyo 174-0061, JAPAN PHONE:+81-3-3966-9491 FAX:+81-3-3966-9524...