Takahashi TOA-150B Refractor

Starting Price: $15,070.00
Price as Configured: $15,070.00
Brand: Takahashi / SKU: TA-TOK15110
Special Order Item. Please contact us for availability and delivery times.
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TA-TKA32587S - Takahashi 645 FLT for TOA150
TA-TKA32587S - Takahashi 645 FLT for TOA150
About This Product

The newly designed TOA-645 field flattener provides an optimal optical solution for both TOA models, allowing them to be used at their maximum performance, without any compromise. The corrected image circle has a diameter of 60 mm. The optimal backfocus of each telescope is achieved by using an M72 extension ring specific to each model : #51L for the TOA-130, #51S for the TOA-150. The photo adapter with M54 thread, or CA Ring35, is also common.

The mechanical input of the TOA-645 flattener is with M72x1 female thread, which makes it compatible with the focusing system of the TOA-130NS as well as with that of the TOA-130NFB and TOA-150B but also with those of the former models.

The newly designed 645 flattener features two fully multi-coated lens elements in two groups and provides outstanding correction out to a 60 mm image circle. Being designed specifically for the TOA-130N and TOA-150B, RMS spot diameters of 1 micron on-axis are achieved. At a 30 mm diameter image circle, the RMS spot diameter is 2 microns, and at 43 mm it is 3 microns. Even out to the full diameter of 60 mm, the RMS spot diameter is 5 microns. With these spot sizes, images are nearly aberration on even the newest small pixel sensors.

$945.00 each
Price as Configured: $15,070.00

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Optical DesignDouble ED Triplet
Aperture150 mm
Focal Length1,100 mm
Focal Ratiof/7.3
Image Circle40 mm
Limiting Stellar Magnitude12.7
Light Gathering Power460x
Back Focus275.0 mm
Tube Length1,110 - 1,270 mm
Tube Diameter179 mm
Tube Weight33.5 lbs. (15.2 kg)
Tube AssemblyAluminum
FocuserRack and Pinion
Focuser SpeedDual Speed
Focuser Size4 inches
Warranty5 years