This filter transmits only light spectrum that comes from celestial bodies, and cuts other light, thus enhancing contrast and clearness of the image. This filter is also modified to transmit the light that comes from two tails of the comet providing natural colors of the object. This modifications makes Kenko Astro Type I more demanded among astronomers.
| Brand | Kenko |
|---|---|
| Name | Kenko Astro LPR Type I |
| Country of Origin | Japan |
| Frame material | aluminium |
| Coating | Hyper Multi Coating by Ion Assisted Deposition(IAD) technology |
| Glass | Optical |
| Glass thickness | 2mm |
| Glass color | transparrent |
| Screw pitch | 0.75mm |
| Front screw | Yes |
| Complectation | Filter, Light transmittance graph, manual, plastic round case. |
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