Variable Aperture Control

A precision-engineered accessory designed to continuously vary the aperture of a telescope's objective lense. It effectively controls the deapth of field and improves clarity. Adjust to cut the marginal rays and allow only the paraxial rays to enhance spectroscopic performance in experiments of Resolving Power of prism and grating.

FEATURES:

Robust Circular Holder with 3-point fixing screws for stable mounting Integrated Iris
Diaphragm for adjustable aperture control. 

A far better choice against the commonly used half closure types.

Versatile Compatibility – fits securely onto the collimator or telescope of most spectrometers and telescope used for resolving power experiments.

Enhanced Spectral Output – allows fine control of aperture and incoming light, improving spectral resolution and clarity.