TAKAHASHI TOA-130NFB ORTHO-APO TRIPLET Focusing motor In Ha channel

In Ha channel

Diameter 406 mm (16")

16mm diagonal) Quantum efficiency 80% Exposure range 30µs-3600s Read noise 1

The reduction of the optical length was measured with the 2" focuser of a Traveler 105mm/f6 Apochromat with a pair of 35mm ED eyepieces

which is recommended for removing the banding caused by Newton's rings

TAKAHASHI TOA-130NFB ORTHO-APO TRIPLET Focusing motor In Ha channelThe Takahashi TOA 130NFB is an Ortho Apochromatic triplet refractor with the highest possible correction of any refractor on the market. The unique optical configuration based on a highly air spaced triplet completely eliminates spherical aberration while having the best chromatic correction in the Takahashi range. With two S FPL53 ED elements, the air spaced triplet lens cell has a Strehl ratio of 99. 8% at the optimal wavelengths of human vision.