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Multispectral Specimen Index

Catalogue comparing light reflection, absorption, and structural signatures across:

  • Visible (380–700nm),
  • Near-Infrared / NIR (700–1000nm)
  • Ultraviolet / UV (300–400nm)

Wavebands using full-spectrum sensor rigs and bandpass filters.

To be added / notes

  • UV re-emissions (i.e. visible light (neon colours) from UV, what most people think of)
  • NIR-bandpass filter (falsecolour from my DSLR to contrast visible light, my other NIR photography)

Botanical & Flora

Specimen Visible (VIS) Near-Infrared (NIR) Ultraviolet (UV) Spectral Notes
Mountain Ash mtn-ash-vis.jpg mtn-ash-nir.jpg mtn-ash-uv.jpg High NIR foliage bounce; UV berry absorption.
Rose Hips rosehip-vis.jpg rosehip-nir.jpg rosehip-uv.jpg Cuticle wax UV bounce vs dark NIR contrast.
Himalayan Blackberry him-blkbry-vis.jpg him-blkbry-nir.jpg him-blkbry-uv.jpg Dynamic NIR leaf bloom; drupelet UV signatures.
Oregon Grape oregon-grape-vis.jpg oregon-grape-nir.jpg oregon-grape-uv.jpg Heavy waxy leaf coating UV scattering.
Morning Glory / Moonflower moonflower-vis.jpg moonflower-nir.jpg moonflower-uv.jpg Floral throat UV bullseye target guide.
Lavender lav-vis.jpg lav-uv.jpg Trichome/essential oil UV reflectivity.
Lavender Yarrow yarrow-lav-vis.jpg yarrow-lav-uv.jpg Cultivar pigment response vs core UV guide.
Himalayan Balsam him-balsam-vis.jpg him-balsam-nir.jpg him-balsam-uv.jpg Petal absorption gradient into UV band.
Black-Eyed Susan susan-vis.jpg susan-uv.jpg Striking UV absorber center target.
Daylily daylily-vis.jpg daylily-uv.jpg Anther/petal contrast & UV guide spots.
Meadow Dandelion meadow-dand-vis.jpg meadow-dand-nir.jpg meadow-dand-uv.jpg Strong UV absorption pattern across florets.

Found Objects & Feathers

Specimen Visible (VIS) Near-Infrared (NIR) Ultraviolet (UV) Structural Notes
Blue Jay Feather bluejay-vis.jpg bluejay-nir.jpg bluejay-uv.jpg Tyndall structural blue drops out in NIR (melanin base remains).

Body & Optical Applications

TBA - better photos to demonstrate, placeholder.

Specimen Visible (VIS) Near-Infrared (NIR) Ultraviolet (UV) Bandpass/Absorption Notes
Sunscreen Application Invisible in VIS/NIR; (Note: Chemical/carbon-based i.e. oxybenzone absorbs and is jet-black, mineral-based sunscreens are reflective.)
Clear Corrective Lenses Transparent in VIS/NIR; opaque UV-blocking coating block.
project/spectrum.1785748507.txt.gz · Last modified: by wikarai