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sjrankin.bsky.social

@sjrankin.bsky.social

1.3K followers 41 following 83 posts

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sjrankin.bsky.social @sjrankin.bsky.social · 16/08/2026

Short video from Perseverance images of a solar eclipse by Mars' moon Phobos (which is shaped like a potato, kind of).

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sjrankin.bsky.social @sjrankin.bsky.social · 09/08/2026

Colorized Curiosity image taken on the slopes of Mount Sharp of a smooth rock (which to me looks like extruded mud) and a nearby rock with sharp-looking protrusions. The smaller image shows the protrusions more clearly.

Curiosity image of a rock on the lower slopes of Mount Sharp with relatively sharp-looking protrusions sticking almost perpendicularly away from the rock (based on the shadows). This image looks vaguely like a Martian puffer fish...

Relatively smooth-looking rock with sharp edges on the lower slopes of Mount Sharp in Gale Crater, taken by Curiosity. To the lower right is a rock with sharp-looking protrusions.

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sjrankin.bsky.social @sjrankin.bsky.social · 09/08/2026

Image from Curiosity on Mount Sharp of a rock with thin layers. The layers are flaking off and have subtle color differences. I colorized the original mosaiced image with OpenCV then used Photoshop to manipulate the colors.

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sjrankin.bsky.social @sjrankin.bsky.social · 29/07/2026

Panorama of Perseverance images with a dust devil in the distance.

Crop and heavily processed image from a panorama of Perseverance images taken in the delta leading into Jezero Crater with a dust devil in it. In this crop, the dust devil is at the center as a light-colored vertical column. There are many low hills in the foreground and mid-ground of the image, and a larger hill in the distance. The overall image is grainy (due to image processing).

Panorama of two Perseverance rover images taken in the delta leading into Jezero Crater on Mars. Despite being a delta, there is no water in the image (Mars having desiccated long ago). The overall scene is dusty with a light beige sky. Small to medium size rocks are in the foreground with small and medium sized hills throughout the image. In the very hazy distance is a tall hill/small mountain. About 1/4 from the left near the boundary between the surface and the sky, you can just make out a light-colored column, which is a dust devil.

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sjrankin.bsky.social @sjrankin.bsky.social · 25/07/2026

Slightly cropped image from Perseverance in the delta leading into Jezero Crater of a scalloped-looking rock. It reminds me of rocks I saw as a child clambering around streams in the foothills of the Sierra Nevada.

Very lightly cropped image from the Perseverance Rover in the delta leading into Jezero Crater of a scalloped-rock with smooth curves and a round hole. The hold is partially filled with fine sand. The rock looks similar to those rocks in streams with fast moving water that shapes the rocks over thousands of years.

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sjrankin.bsky.social @sjrankin.bsky.social · 12/07/2026

Two panoramas from Curiosity that I used OpenCV to colorize. (Well, I used OpenCV on the individual images then created a panorama...)

Colorized panorama of Curiosity images from the lower slopes of Mount Sharp in Gale Crater of an embankment with hills in the background and a pale, tan sky overhead. Each image was colorized (via OpenCV) individually then combined into a panorama with Photoshop.

Colorized panorama of Curiosity images from the lower slopes of Mount Sharp in Gale Crater looking up the side of Mount Sharp. Chaotic terrain is in the distance on the right. The sky is pale tan in color. Each image was colorized (via OpenCV) individually then combined into a panorama with Photoshop.

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sjrankin.bsky.social @sjrankin.bsky.social · 08/07/2026

Panorama of colorized (via OpenCV) Curiosity images of what looks like a meteorite sitting on the lower slopes of Mount Sharp in Gale Crater on Mars.

Panoramic close-up view of a shiny gray object, probably a meteorite, sitting on rust red terrain. The individual images were taken by the Curiosity Rover on the lower slopes of Mount Sharp in Gale Crater on Mars recently (as of 8 July 2026).

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sjrankin.bsky.social @sjrankin.bsky.social · 03/01/2026

Our old cat Assam (named after the tea) when we lived in Hokkaido, video made in July 2016 when she was about 18 or 19 years old (we adopted her as an adult in 1999).

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sjrankin.bsky.social @sjrankin.bsky.social · 23/12/2025

Combined NASA/JPL SPHEREx visible and infrared images of the sky (mostly dominated by the Milky Way).

NASA/JPL SPHEREx whole sky image created from combining the visible light image version and the infrared light image version into one image.

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sjrankin.bsky.social @sjrankin.bsky.social · 20/11/2025

Picture I took in Yubari, Japan in late November of 2016 of snow hats on mountain ash berries.

Photo of snow on top of groups of mountain ash berries in Yubari, Japan in late November of 2016.

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sjrankin.bsky.social @sjrankin.bsky.social · 18/11/2025

Panorama I created from Perseverance navcam images of peaks in the delta in Jezero Crater, along with her tracks. I also altered the colors to be more appealing (and less scientific).

Panorama of Perseverance navcam images showing her tracks on the dusty ground in Jezero Crater with peaks and rises and hazy Jezero Crater in the background. I altered to color to bring out more non-orange colors. Personally, I like the scene - for some reason, it appeals to me.

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sjrankin.bsky.social @sjrankin.bsky.social · 05/10/2025

Panorama I created of Perseverance images of what looks like a stalactite on its side. In Jezero Crater, Sol 1644.

Panoramic view from Perseverance images of a rock in Jezero Crater that looks like a stalactite on its side, lying on the ground.

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