About this product
Model: tak_tsk06410
Part Number: TSK06410
Takahashi FS-60CP Optical Tube with 50.8mm to 31.75mm Adapter
The Takahashi FS-60CP is an f5.9 doublet fluorite APO Refractor telescope with a 60mm objective diameter.
The multi-coated fluorite rear lens and eco-glass front element provide maximum light transmission and high contrast.
The new CP version of the FS60 has been created to work with Takahashi's new high-performance 4 Element Fluorite Full Format FU 0.64x Focal Reducer.
The telescope's wider rear enables the use of a larger, stronger focuser than the standard FS60CB Telescope.
Takahashi designed the FS60CP to work at F3.8 with the FU Reducer at a focal length of 230mm. With the FU Reducer, the FS60CP becomes a high-performance astrograph.
The FS60CP is also compatible with the 1.04x FC/FS Multi-Flattener and the 1.7x CQ Extender.
For visual use and focusing on infinity, the scope will require a star diagonal or the separately available 50.8mm Extension Tube.
The FS60CP has been designed with deep sky imaging in mind.
This non-standard reducer forced Takahashi to significantly rework the FS-60CB's mechanical design (the FS-60CB's original tube is not compatible with a larger and more robust focusing system). The Focuser has been replaced by the larger, stronger focuser used on the SKY-90.
This assembly offers the possibility of screwing the reducer (with M64 thread) and natively adapting an eyepiece holder to the 2" (50.8 mm) barrel, which the FS-60CB did not allow.
This change in rear configuration, therefore, gives access to new assemblies, either with a 2" push-fit or with a classic M56 thread- The adaptation of certain existing accessories sometimes requires modifying an assembly: for example, imaging with the standard FC/FS MFL1.04X (Multi Flattener) field corrector requires the installation of an L30 extension tube [TKA18006].
The optical tube mount is also revised. Tube Rings (optional) and a Vixen-type dovetail (optional) replace the standard Takahashi Tube Holder.
Mounting is done via the wide (95mm) rear. The dovetail has numerous holes to facilitate balancing, regardless of the imaging train set up at the focus.
NOTE: The tube rings and dovetails shown in photos are not included but are available to buy separately.
FS60CP System Chart
The FU 0.65x reducer is an optical innovation. It comprises 4 lenses, one of which is made of fluorite, a first for this type of amateur instrument. It eliminates the residual chromatism that could persist with the C 0.72X reducer; chromatic aberration is further reduced by half compared to the old model. The field is perfectly flat, covering the surface of a 24x36 full-frame sensor. The spot radius, 3 µm RMS, is homogeneous from the centre of the field to the periphery. The size of the lenses and the change in position of the reducer in the telescope increase the illumination of the field at the focus by approximately 80%, including at the periphery.
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