Takahashi TOA-150 Tube assembly ONLY (Retractable Lens Shield)

Takahashi TOA-150 (Retractable Lens Shield)

	In the tradition of TOA-130, TOA-150 is the new addition to Takahashi\'s TOA line featuring 4\" focuser and retractable lens shield.   Includes TOK15110 TOA-150B tube ass\'y OTA

TOA-150 Specifications

Type : Triplet apochromat
Aperture : 150mm
Focal length : 1100mm
Focal ratio : F/7.3
Resolving power : 0.77\"
Limiting magnitude : 12.7
Diameter of main tube : 178mm
Length of main tube : 1290mm w/dew shield extended
                                1110mm w/dew shield retracted
Weight of main tube : 20kg w/5kg tube counter-weight
Focuser : 4\" rack & pinion
Finder scope : 7x50 w/FQR-1 & reticle illuminator

With 35-flattener
Focal length : 1080mm
Focal ratio : F/7.2
Image circle : 40mm (60% illuminated)

With 67-flattener
Focal length : 1090mm
Focal ratio : F/7.3
Image circle : 90mm (60% illuminated)

With Reducer
Focal length : 860mm
Focal ratio : F/5.7
Image circle : 50mm (60% illuminated)

With Extender TOA 1.6x
Focal length : 1760mm
Focal ratio : F/11.7
Image circle : 40mm (60% illuminated)

	Optical Tube Assembly
Effective Aperture	150mm
Optical Design	Triplet Ortho-Apochromat
Focal Length	1100mm
Focal Ratio	F/7.3
Tube Diameter	179mm
Tube Length	1110mm (1290mm extended)
Tube Weight	14.6 kg
Finder Scope	7x50, 6.3°
Resolving Power	0.77 arc sec
Limiting Magnitude	12.7
Light Collecting Power	459X