Penultimate Penrose

My printed tile map.  It identifies the fat and skinny rhombus tiles so that I knew how many to make and how to place them.  It was generated based on a simulation of  an edge length of 250mm and a gap width of 6mm, adding up to a nice binary number.

I suspended this project in order to go on a roadtrip to capture pictures of the night sky in the beautiful deserts of the Southwest.  I am currently working on them, and hope to share them soon, but the Penrose tile floor project carries a higher priority—we want our screen porch back while it is still summer!

Having prepared my tiles to the best accuracy I could coax from my woodworking tools, I now faced how to place them on the floor.  As before, I considered the advice from Ken Adelman, who recommended “dis-aligning” the pattern from the rectangle of the room, to avoid difficult or awkward-looking tile fragments at the edges.  He also recommended identifying a center point and creating reference lines radiating at angles that match the pentagonal symmetries of the tiling.

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The Wall of Books

This is adapted from a tribute that my father made at the memorial of his father, Theodore Olson, after whom we are both named, who died in 2002 at the age of 97.  I post it here for the online access of posterity, and to provide a portrayal of the scientific mindset of a family patriarch that influenced not only his students, but his entire family and several generations beyond.  Here is my father’s rendition of our family history.


The start of this story goes back almost 150 years. In about 1860 in Norway, Hans Opjörden left home and went to Oslo. Hans had the misfortune to be the second son in his family, and that meant that his older brother would inherit the family farm. Hans left home and headed off to Oslo, where he went to work in a shipyard building boats. After a while he decided he really wanted to sail on the boats instead of just building them. At this time Norway was a province of Sweden.  Shrewdly, Hans changed his name from Opjörden to Olson (with a Swedish spelling) and got Swedish sailing papers.

He went on several voyages and along the way befriended a shipmate named Peter Magnus Peterson.  We can imagine a conversation between them based on what subsequently happened.  Hans confided that he’d really wanted to be a farmer but had no prospects of getting land—and that being a sailor was not his “dream job”, but was good paying employment. 

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A New Home for Nightscapes

“Climber Trails”, from my gallery of film startrail classics.

The internet has evolved tremendously since its early days when I first tried to use web pages to show the results of my nighttime photography.  Back then, our (dial-up) Internet Service Provider (ATT) offered a home page and a URL subspace to their customers.   I took advantage of it and crafted some pages to hold my pictures and stories.  Later, I acquired my own domain, nightscapes.net, found a host, loaded my stuff onto it and even got some professional help to re-organize when it became unwieldy. 

I learned that maintaining a website can be a lot of work; the technology evolves, links and scripts break, web page conventions, html standards and visitor expectations change.  I’m not a programmer (despite a lifetime of doing it), and my interests are in the art and science of images, not the latest network and browser technologies for supporting the latest desktop/laptop/tablet/phone displays.

So I was excited to discover a website service oriented toward photographers, a platform with a small army of support people who maintain it, with features that display photographs at their best, regardless of display or browser, keeping up with the latest updates to internet programming standards.  They offer additional services for professional photographers (“buy print”, etc), and at an earlier time I might have subscribed to them.

But I am happy now to keep the shopping cart icons suppressed and not distract from the images themselves.

I have transferred my collection of nightscapes accumulated over the last two decades, over to smugmug, where you can find it at thorolson.smugmug.com.  I know people don’t power-browse through large collections of pictures, so I consider this to be really more of an archive, to continue my project of making a digital coffee table book of my favorites.

But I will also use the site to display my more recent work, as I complete it.  It will be a relief to have a way to do so without the overhead of manually creating and integrating new web pages for them. 

I intend to make posts to this, my personal website, when I add new photographs.  I invite you to subscribe or “follow” me, which will send you an email when new posts are made.  If you are intrigued by the types of pictures I like to take, well, I take enjoyment in sharing them and would love to have you as a follower.


Monuments at Night, Nov 6

Mitten at midday

I am at the end of my designated time for this expedition.  I must now return from whence I came, to a civilization density that can host a technical conference, and will also develop the latent images captured on my film from this remote beautiful place.

As I reflect on the past few days I realize that there are more things that I would like to do.  I never did get to the Goulding Museum, or to the trading post near there (which I was told by the traveler couple was closed on the weekend).

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Monuments at Night, Arrival

Mars over Mittens, Twilight at Monument Valley
Nov 1, 2005, Monument Valley AZ
Pentax 6×7, Provia 400, 30 sec at f/3.5

I have long been fascinated by the landscapes of the southwest, and in particular the peculiar rock formations found in Monument Valley, a unique area straddling Arizona and Utah.  I am not the only one that finds them intriguing: it is a very popular photographic and film-making target.

When a business trip took me to a conference in Phoenix, I decided to prepend a personal trip to this Navajo Nation Tribal Park to take pictures of the night sky.  My plans were ambitious; I wanted to take wide angle star trail photos featuring the famous buttes, but also, knowing how remote and dark this area would be, to take guided astrophotos of some deep sky targets. 

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