BM-90mm F500 I

Name: BM-90mm F500 I
Brand: Barride Optics
Author: Barride Opitcs-First

Refractor OTA

Additional information

Product Details:

Feature:

1.Doublet air-spaced design

2.Inner extinction working procedure to reduce inner reflex and astigmatism, enlarge image’s sharp

3.Fully Multi-coating, green coating
4.Aluminum-magnesium alloy structure

5.Retractable dew shield

Specification:

1.Optical Aperture:90mm

2.Focal length:500mm F/5.5

3.2″ 10:1 two speed Crayford focuser

4.Metal mounting ring

5.2″ to 1.25 connector

6.Black shockproof soft bag