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UltravioletPhotography

Hesperis matrionalis [Dame's Rocket]: More Examples


Andrea B.

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Blum, A.G. (2017) Hesperis matronalis L. (Brassicaceae) Dame's Rocket. Flowers photographed in ultraviolet, visible and infrared light. http://www.ultraviol...-more-examples/

 

Seal Cove, Mount Desert Island, Maine

22 July 2017

Wildflower

 

Synonyms:

na

 

Comment:

Dame's Rocket can vary widely in colour from light or dark pink/magenta to reddish-purple to white. This white variant is moderately UV-reflective -- or, equivalently, moderately UV-absorbing. The center reproductive parts are UV-dark with brighter pollen.

Rørslett (2013) first showed Hesperis matronalis on UVP in ultraviolet(1). Blum (2013) showed an example of UV-variation in Hesperis matronalis(2).

 

References:

1. Rørslett, B. 2012. Hesperis matronalis L. (Brassicaceae). Dame's Rocket. Flowers photographed in visible and ultraviolet light.http://www.ultraviol...s-dames-rocket/

2. Blum, A.G. (2013) A UV Variant Example of Hesperis matronalis L. (Brassicaceae) Dame's Rocket. Flowers photographed in ultraviolet and visible light. http://www.ultraviol...ariant-example/

3. New England Wild Flower Society (2017) Hesperis matronalis L. Dame's Rocket. https://gobotany.new...ris/matronalis/

 

 

Equipment [Nikon D600-broadband + Carl Zeiss 60mm f/4.0 UV-Planar]

 

Click photos to view at 1200 pixels width (or height) in an expanded browser.

 

Visible Light [f/11 for 1/200" @ ISO-400 with Onboard Flash and Baader UVIR-Block Filter]

Like other Brassicaceae, Dame's Rocket forms seed bearing cases called siliques.

hesperisMatronalis_visFlash_20140722sealCoveMdiME_23508pn01.jpg

 

Ultraviolet Light [f/11 for 5" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]

A long exposure was used to permit a bit of sunlight to boost the UV-flash.

hesperisMatronalis_uvBaadSB14_20140722sealCoveMdiME_23512pn01.jpg

 

 

Visible Light [f/11 for 1/1.3" @ ISO-400 with Onboard Flash and Baader UVIR-Block Filter]

hesperisMatronalis_visFlash_20140722sealCoveMdiME_23526pn01.jpg

 

Ultraviolet Light [f/11 for 15" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]

A long exposure was used to permit multiple UV-flashes.

hesperisMatronalis_uvBaadSB14_20140722sealCoveMdiME_23536pn01.jpg

 

Infrared Light [f/11 for 1/200" @ ISO-100 with Onboard Flash and B+W 092 IR-Pass Filter]

hesperisMatronalis_092IrFlash_20140722sealCoveMdiME_23544pn01.jpg

 

 

Visible Light [f/11 for 1/100" @ ISO-100 with Onboard Flash and Baader UVIR-Block Filter]ax

Abaxial view of the flowers.

hesperisMatronalisAbaxial_visFlash_20140722sealCoveMdiME_23562pn01.jpg

 

Ultraviolet Light [f/11 for 15" @ ISO-400 with SB-14 UV-modified Flash and BaaderU UV-Pass Filter]

A long exposure was used to permit multiple UV-flashes.

hesperisMatronalisAbaxial_uvBaadSB14_20140722sealCoveMdiME_23570pn01.jpg

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I especially appreciate the second image in this post; which helps to prove/display UV absorbance vs reflectance within the image. This has me thinking about making a miniature or at least very small calibration target which can be easily included in UV images without being obtrusive to the composition.
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That's a good idea. In order not to sacrifice composition, a UV photo could be shown which contains some targetry to establish the reflectivity record -- and then another more "artistic" version without the target(s) could also be shown.
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