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Takahashi TOA-130S/F specifications

Optical specifications

Spec. TOA-130S TOA-130S
Optical design Triplet Ortho Apochromat
Optical mounting Air spaced
Glass types SD/ED
Optical coatings Fully Multi-Coated
Aperture 130mm
Resolution 0.92"
Visual limiting magnitude 12.7
Light grasp 469x
Standard
Focal length 1000mm
Focal ratio F/7.7
Image circle NA
Photo field NA
With TOA-FL35 flattener
Focal length 980mm
Focal ratio F/7.5
Image circle 40mm
Photo field 2.3°
Photo format DSR/DSLR 35mm camera
With TOA-FL67 flattener
Focal length - 1000mm
Focal ratio - F/7.7
Image circle - 88mm (60% non-vignetted)
Photo field - 5.3°
Photo format - 6x7 camera
With TOA-RD reducer
Focal length 750mm
Focal ratio F/5.8
Image circle 50mm 45mm (60% non-vignetted)
Photo field 3.8°
Photo format DSR/DSLR 35mm camera

Mecanical specifications

Spec. TOA-130S TOA-130F
***Retractable dew shield
Focuser diameter 68.6 mm 101.6 mm
Tube length (mini/maxi) 1015mm - 1145mm (with standard accessories)***
Tube diameter / with dew tube 155mm / 179mm
Tube weight 10.5 kg 11.4 kg