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Chelidonium majus [Greater Celandine]

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#1 nfoto

    Former Fierce Bear of the North

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Posted 19 December 2012 - 23:01

Rørslett, B. 2012. Chelidonium majus L. (Papaveraceae). Greater Celandine. Flowers photographed in visible and ultraviolet light. http://www.ultraviol...eater-celadine/

Chelidonium majus L.

NO: Svaleurt
SE: Skelört
DK: Svaleurt
FI: Keltamo
DE: Schöllkraut
EN: Greater Celandine


Specimen collected outside Oslo, Norway, 23 May, 2012

Attached Image: CHEL_MAJ_I1205230445_VIS.jpg
Visible light: Panasonic GH2, UV-Nikkor 105 mm f/4.5 lens, Baader UV/IR Cut filter

Attached Image: CHEL_MAJ_I1205230443_UV.jpg
Ultraviolet light (broadband 300-400 nm): Panasonic GH2, UV-Nikkor 105 mm f/4.5 lens, Baader U 2" (Venus) filter, Broncolor Minicom studio flash

Attached Image: CHEL_MAJ_I1205230450_UV340_Delta_10nm.jpg
Ultraviolet light (narrowband 335-345 nm): Panasonic GH2, UV-Nikkor 105 mm f/4.5 lens, BP340 filter, Broncolor Minicom studio flash. Black/white rendition.

There is no appreciable difference between the narrow- and broad-band UV captures so basically this species provides the same UV signature over the spectral range used by pollinators. Whether this is a general trend for flowers is not yet clear. Making narrow-band captures and in particular deep into UV-A/UV-B entails a significant loss of UV response by the camera so, technically speaking, broad-band records are less demanding and easier to accomplish.

[Last updated 26 Dec 2012]