Takahashi TOA-130NS Triplet Ortho Apochromatic 130mm Triplet Refractor
The triplet TOA-130NS is the first of the new Ortho-Apochromat Series. Pictured on optional mount, not included. This 21st century innovation employs a newly designed triplet using special elements to produce the highest order of color correction, hence the name Ortho-Apochromat and is packaged in a short 32” tube with the lens shade retracted.
This instrument will be offered with the classic 2.7” focuser. For those wanting to use a medium format camera, this focuser, coupled with the dedicated flattener, will produce a fully illuminated 70mm circle with a usable 92mm diameter.
The high order of color correction of the Ortho-Apochromat Series produces images with saturated color and thanks to the numerous knife-edged baffles, an image with amazing contrast.
The TOA-130 is perfect for visual, CCD and photo imaging. The f/7.7 focal ratio with a 1000mm focal length is long enough, using the LE-ED 2.8mm Takahashi ocular, for high magnification observations of the Moon and planets and yet will produce a 2.5° field at 20x when used with the field flattener.
Focal length with flattener 999mm
Focal ratio with flattener f/7.68
Image circle 92mmǾ
Photographic field 5.3°
Focal length with reducer 754mm
Focal ratio with reducer f/5.8
Image circle 52mmØ, 25mmØ
Photographic field 3.8°
Backfocus from end of OTA 258mm
Diameter of main tube 155mm
Length of tube w/adapters removed 812mm (32")
Diameter of dew shield 179mm ø
Dew shield retractable
Tube weight 10kg (22lbs)