9005.80.40 - Optical telescopes

HTS Code 9005.80.40 specifically covers optical telescopes that are not otherwise classified. This category encompasses instruments designed to magnify distant objects using lenses or mirrors, for terrestrial or astronomical observation. The defining characteristic here is the primary optical magnification function, distinguishing them from instruments with different primary purposes.

This heading differentiates itself from sibling category 9005.80.60.00 ("Other") by its specificity. While "Other" acts as a residual category for instruments within the broader 9005.80 group, 9005.80.40 is dedicated to distinct optical telescopes. It should be noted that this classification excludes radio-astronomy instruments, which fall under different chapters or headings.

Within this category, further subdivisions exist to refine classification based on the type of light the telescope is designed to detect. Subcategory 9005.80.40.20 is for telescopes specifically designed for use with infrared light, requiring specialized optical components and detectors. Subcategory 9005.80.40.40 captures all other optical telescopes not falling under the infrared designation, covering a broad range of visible light and other non-infrared spectrum observing instruments.