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When processing color images from my 2600MC taken with a dual-band HaO3 filter, I found that debayering in #PixInsight using DrizzleIntegration (CFA checked, 1x scale, 0.9x shrink) resulted in better color rendition and less green noise than the non-drizzle images. This worked even though my data weren’t undersampled (though they were still well-dithered).
Thought that was interesting.
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A 24h timelapse showing the dramatic nyctinastic movement of a calathea (also known as a rattlesnake or prayer plant).
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A wider view of the #fluorescence from these flowers under 365nm #UV light, showing a more varied range of colors than just blue.
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While working on more multispectral images, I noticed the ethereal blue #fluorescence of these flowers under ultraviolet light.
This was done with 10 seconds of light painting with a 365nm UV flashlight, captured using an unmodified mirrorless camera.
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A false-color #multispectral photo I took of a larkspur with UV and IR light mapped on top of a regular visible-color photo. Inner parts of the flower petals reflect more UV than others and thus show up in blue. Other parts absorb UV but reflect IR, resulting in the red colors seen in the inner part of the flower and stems. Many flowers use this contrast to help pollinators (who often can see UV) to distinguish key parts of the flower.
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Another #multispectrum image showing #infrared and #ultraviolet light in red and blue, respectively. Note how the blue UV light glitters and reflects from the edges of the petals, while the interior of the petals and the stalk in the background glows red from reflected IR (the “Wood Effect”).
#IRphotography #infraredphotography #uvphotography #photography
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Latest #multispectrum image, showing what a flower might look like if we saw beyond visible light into the UV and IR spectra.
I’ve mapped IR light to red and UV light to blue, and added them to the existing red and blue data from the ordinary RGB image (included for comparison). Notice how the spots on the petals reflect IR light (and thus glow red), and how outer parts of the petals reflect more UV (blue).
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A #outrun-style, false color infrared image.
Here, IR = red, red = blue, green = cyan, and blue = green. #IRphotography #photography
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My first image from my hacked-together #multispectral (IR, UV, and visible light) camera. Near IR is in red, visible light is in green, and UV is in blue.
The camera itself is a monochrome camera I normally use for solar imaging, while the lens is just a regular Nikon 50 f/1.8D. Between the two is an electronic filter wheel with IR pass, IR cut, and UV pass filters.
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Out stargazing in the mountains last night when my dog noticed we had a visitor. Never seen a tarantula in the wild before- they’re super cool! A quick #kagi search suggests that it’s a California ebony tarantula.
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Walking my dog last night and thought the full moon looked a little lopsided. Turns out it was grazing the edge of the Earth’s shadow- I’d completely forgotten about the penumbral lunar eclipse!
(Also a shout-out to the #lightroom app’s camera- this was first time I’ve ever been able to get a properly exposed picture of the moon from my iPhone)
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Some picules, the tendrils rising above the surface of the solar chromosphere, visible through an H-alpha filter.