The Guide's Journey

This was originally posted on my website here but as my business has grown and I've added more bios to that page I feel like it's no longer fitting to have such a long life story posted there (also kinda embarrassed any time someone reads the whole thing and says something like "MOOOON" to me)

Hey there I'm Luke! I'm so glad you're here on my site reading about me! I have a degree in astrophysics, over 8 years experience in educational astronomy and I have been running AstroTours.org for over three years now. ​ I was born in Denver Colorado and have been amazed with the Rocky Mountains' sky my whole life. One of my father's favorite stories from my infancy is when he took me outside on a full moon night and I pointed up at the moon and said "ball". My father got real tickled by this and said "Very good Luke! That is a ball, we call that ball the Moon!" to which I said "MOOOOOOOOOON!". some time later I hadn't seen the moon in a while so I came to my father distressed saying "MOOOON gone gone" and doing a gesture that usually meant I was looking for food. My father laughed and showed me the moon again later that day. ​ I've owned a few telescopes but still my favorite one was given to me by my grandfather when I was in middle school. It is a 4 inch Mak-Cassegrain telescope, it's very portable so I've taken it everywhere with me and if you come on a tour with me I'll show you how to use it and learn the sky with it as I did. ​ After graduating from high school I took a year to work on a US Forest Service wild land fire hand crew which gave me the opportunity to go to remote places all over the United States and sleep under some really dark skies. ​ Upon completion of my season on the hand crew, I was offered a job as a fire lookout. Stationed in the forest on a mountain outside of Lake Tahoe with large binoculars! I would use the binoculars to spot fires during the day and look at the skies at night.

​ I went on to study physics at the University of Colorado. After visiting Volcanoes National Park and the Mauna Kea Observatory in Hawaii, I was inspired by the incredible night skies to add astrophysics and geophysics to my degree.

​ I worked a few odd jobs while studying, such as spending a summer on a commercial tuna fishing vessel off the coast of Oregon. This work was dependent on the tides and required me to get familiar with the phases of the moon.

During the school year I would volunteer at the Denver Museum of Nature and Science where I ran telescopes for solar observing and special events. I joined a club that met weekly to learn how to use the planetarium and develop content to be shown in the planetarium. ​ I graduated in 2016 with a major in physics and a minor in astrophysics and geophysics. I completed an independent study in quasar research and a senior project using magnetism to launch payloads in to space. ​ After graduation I went to Australia on a work visa and worked odd jobs all around the continent. My two favourite jobs being a tour guide for "Space Gandalf" at Astro Tours Broome (AstroTours.net) and an astronomer at the Gravity Discovery Centre in Perth WA (gravitycentre.com.au). Both of these jobs required me to showcase the wonders of the night sky to tour groups.

Space Gandalf and I setting up telescopes.

When my visa expired in Australia and I had to return to America and looked all over for a similar job here. I quickly realized that nothing similar exists in Colorado which lead me to create AstroTours.org! I'm so very excited to see what comes next and what this business teaches me!

I look forward to seeing you on one of my tours!

Book a tour today at AstroTours.org/booking

Seasonal indicators

You made it to summer! June 21st 2021 is the first day of summer and you can tell by using the "summer triangle". Rising in the east at sunset there are three distinctly bright stars (Vega, Altair, and Deneb) which make up the summer triangle. This triangle has been a seasonal indicator for centuries in the northern hemisphere; when you see this triangle rising in the east you can know it’s summer time. Here we are at the start of summer and sure enough the summer triangle is right on the eastern horizon at sunset!

Mid June 2021 (6/15/21) sky at astronomical twilight (about 10:40pm) With "summer triangle" highlighted.

Earth has two solstices and two equinoxes, and June 21st 2021 was "summer solstice" the longest day of the year (in the northern hemisphere). This is also the day that the sun is highest in the sky (in the northern hemisphere). Because the Earth's daily rotation around its axis is tilted from the yearly rotation around the sun there’s times where the sun is directly above the equator (equinox) and times the sun is above the tropic of Capricorn/tropic of Cancer (solstices). Jun 21st the sun was above the tropic of cancer making it the summer solstice in the northern hemisphere and the winter solstice in the southern hemisphere.

Relationship of Earth's axial tilt to the tropical and polar circles

Solstice is used to officially denote the start of summer and has been used for centuries. Stonehenge was used to measure the sunrise/set at the extreme points in the sky to mark solstices. You can do this at home stand in a easy to remember place like the center of your patio and watch the sun set over the next month or so. The first time you look take note of where and when the sun sets. you can do this by placing something like a rock/bottle out on the edge of your patio where you see it set or just take note of what distant trees/mountains/landmarks it sets behind. Check back a month or two later (standing in the exact same location you started with) and you should see the Sun setting slightly south of where it set during your first observation. If you keep laying out stones marking where the sun sets all year you'll eventually have made your own stone hinge from your observations (if you can check back on September 22nd that will mark fall equinox).

Stonehenge measuring sunset

The ancient Egyptians used the second brightest star in the sky (only second to the Sun) Sirius to denote the start of summer. When Sirius is seen rising in the morning with the sun (as it is now) it was the hottest days and coincided with the flooding of the Nile. On occasion you might hear hot days referred to as “dog days” this actually comes from Sirius the “dog” star and dates back to ancient Egypt. It was thought that the Sun and Sirius (the two brightest stars in the sky) shining together is what made the days so hot. Because Sirius is in the constellation Canis major, the “big dog” in the sky it was natural to call hot days “dog days”. It's been hypothesizes that the "ventilation" chambers of the great pyramid in Giza were actually designed to line up with the position of Sirius. The Egyptians could have used this to make astronomical observations, much like Stonehenge was used with the sun.

Orientations of the ventilation channels of the great pyramid with the stars Thuban, and Sirius "Sirio".

Another seasonal indicator is the Big Dipper/North Star. If you're above ~35 deg latitude (as we are in Colorado) you can see the big dipper year round in your northern sky. The North Star is fairly easy to locate using the Big Dipper with the two stars at the end of the vessel of the dipper pointing right at it (see pictures below). The Big Dipper always points to the north star, like a spoke of a bike tire rotating around the north star once a year. You can use this yearly rotation to get an idea of what time of the year you’re in. Most basically if the Big Dipper is to the West of the North Star it’ll be hot (summer) and East of the North Star it’ll be cold (winter). You can further divide it by using if the Big Dipper is above the North Star at sunset it’s Spring and below the North Star at sunset means it’s fall.

My personal favorite seasonal indicator is Orion vs Scorpio. The story is that Orion has a restraining order on Scorpio. Scorpio is responsible for Orion’s death so when the gods were placing the constellations in the sky Orion made it clear he didn’t want to be anywhere near Scorpio so they placed them on opposite sides of the sky. Because they are on opposite sides of the sky, Orion is only seen in the winter night sky and Scorpio is only seen in the Summer. I can use this to see when I have skiers/people most familiar with the winter sky on the tour in the summer because they’ll ask “where’s Orion? I always see Orion”. This was also seen in the southern hemisphere there’s an Australian Aboriginal song called the “Maysong” the gist of the song is that when “the hunter” (Orion) goes to sleep and the “scorpion” (Scorpio) rises in the east that’s the best time to go salmon fishing. The song is called the Maysong because it’s describing what happens in the sky in the month of May when we transition from having Orion in the sky to having Scorpio.

If you want to learn more star lore and get an up close look at these seasonal indicators book an Astro Tour today

Meet AstroTours.org's newest tour guide!

I'd like to welcome Christina to Astro Tours! Christina has been training with me for the last couple months and has already well surpassed where I was when I first started Astro Tours! Christina has been studying astrophysics for some time now. Here's her story in her own words:

Christina aligning telescopes

Hello! My name is Christina and I am an astrophysics major at the University of Colorado. I have always been very passionate about the night sky and particularly sharing the wonderful mythologies and science surrounding our constellations and the objects within.

I am currently involved with a research group at the university that is looking into the effects stellar flares have on exoplanetary atmospheres and what that might mean for the habitability of those planets.

The Crab Nebula (Christina's favorite deep sky object)

My favorite object to talk about is the Crab Nebula! I am fascinated by the astrophysical processes surrounding the life cycles of stars, particularly supernovae, and I enjoy describing the various civilizations that viewed this event when it occurred and the impact it may have had in their lives.

Come learn more about our universe at AstroTours.org/booking