Features & Benefits:
- High-quality transmission diffraction grating mounted in a custom low profile 1.25 inch filter cell
- Low profile (5.2 mm above the thread) filter suitable for use in close coupled filter wheels
- Anti-reflection coated glass protects the grating surface
- High efficiency 200 lines/mm blazed design
- Spectrum direction marked on the filter cell
- Optimised for larger aperture longer focal length telescopes with larger camera sensors
- Star and spectrum can be recorded in the same image, aiding identification and calibration
- Can be used with filter wheels designed for unmounted filters using the optional mounting kit
