My Astro 28X class at California Cavern, Spring '08.
In the Rock Shop, ready for the descent
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May 29, 2021
This field class has now been approved to be - once again - a real field class! Not just an on-line class. As of this moment, the school is still sticking to the old CoVid rules, but the CDC has now advised that anyone who has been vaccined against CoVid no longer needs a mask. I'm hoping that officially is approved for this class as well. Your instructor and his helpers have been vaccinated. Under the existing rules, you'll cook your own meals, but I'm hoping that changes as well, as I really enjoy fixing group meals that keep everyone together for educational and socializing purposes.
The campground we like (Wakalu Hep Yo) is now open, it is first come / first serve with no reservations, so we will be particularly keen on having any people who want to arrive early and grab ~3 campsites for us. Contact me through my campus email or Canvas for more on that.
You'd find your way to our proposed campground used on the prior 2017 Fall Astro 25 trip. You'd be camping in your own tents, Students are responsible for their own meals on this trip, due to CoVid. We may or may not be able to get into the California Caverns but even if not, there's a creek which tunnels through limestone (Natural Bridge natural area) which is very interesting and has many of the formations seen in California Caverns, and a great place to enjoy cool water on a hot summer day. I'd have my usual micro-lectures on the trails as we hike to this spot (just a 2-3 mile hike round trip), and there's the Stanislaus River itself we can enjoy right at camp. We'll have volunteer telescope operators as in the past. For sure you'd have yours truely with Cabrillo Observatory equipment!
I will continue to update this page. Check back regularly.
Our first meeting was tonight.Because of the CoVid-delta outbreak and rapid and accelerating rise in cases in the U.S, and because my students have failed mostly to let me know what their vaccine status is, the class has now become a parallel on-line class, and a field trip class. Students can opt for one or the other. The turnout for the Zoom session meeting tonight which was an important attendence point, was low. I've asked all students now to inform me of their decision: on-line, or field trip, via Canvas. If I hear nothing from a student by this Thursday July 29, they are likely to be dropped by the instructor.
Liability Waivers
All students attending the camping trip must sign and return the liability waiver, linked here, and in our Canvas page under 'files' as well.
July 28, 2021
Below is our plan for the In-the-Field version of this class. Due to the resurgent Delta Variant of CoVid, it's been decided we will offer a parallel on-line-only version of this class, which is still in process. For both the field trip and the on-line classes, your grade will depend largely on your scores on the exams, which will be offered on Canvas. You MUST pay attention to the Canvas pages for this course! But more detailed information and images are to be found here, on our website for the course.
Aug 5, 2021
Here is a published table of the PDF's of the lectures for this class, for your use when you start on the quizzes published in Canvas and which will largely determine your grade. Note there are also some YouTube versions of these, me lecturing!
Supplementary Table of my Presentations and YouTube lectures
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This field astronomy course will keep us busy both staring upward at the universe, and staring deep underground at the amazing geologic processes happening in limestone caverns. With the recent discovery of possible running water and also limestone formations on Mars, the processes we'll study here may happen more widely on other planets.
Here's a link to the formation of Caverns. and some recent work using them for studying paleo climate change. We camped near here and explored the caverns as part of Astro 28X back in Spring '08. Check out the photos from that adventure. Farther up Hwy 4 back in '01 for Astro 28E; before I was so meticulous about digital photo-recording everything. However, check out the pix I did get at the link. We also went here just last year, in 2017, and had a great adventure. See the pictures here.
On-Line Zoom Pre-Trip Meeting. July 25 7-9pm (Zoom recording)
This is our pre-trip meeting. This is the official beginning of the class, so any adds must be done before or during this class. We'll discuss the campground, rules for avoiding CoVid, directions and the fact you'll need to bring your own food - I'm forbidden from cooking for my students on this CoVid-affected trip. And then a zoom lecture on planetary formation in stellar clusters and nebulae. I will need to distribute on-line, liability waiver forms. Students attending the camping trip need to sign a liability waiver and return it before the trip. Here is the PDF of the PowerPoint I presented. We also had our first lecture on astronomy. It was on the formation of stars and planets, linked here.
Our campground is at Wakalu Hep Yo Campground, entrance just a few yards before the Sourgrass Crossing over the Stanislaus River - We've enjoyed this site on several Astro 25's in the past. It is first come / first served at this time and the campsites best for astronomy were unoccupied (which is typical - most campers like to be under lots of trees). Still, I will want to get up there ASAP on Friday to grab spots. We have JP and probably Kirk and I trying to get their early and secure our preferred campsites along the little ridge above the campground road on the right side. A new restriction this Summer '21 is that we are permitted NO cooking! That means we'll have to bring already prep'd meals, or otherwise food not needing cooking. That's a bummer! But, it's mega-fire season.
My Astro 28X class at California Cavern, Spring '08. |
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In the Rock Shop, ready for the descent |
Get onto Hwy 4 going into the Sierra and pass through Arnold up to Dorrington. At Dorrington, look for Boards Crossing Rd. The Google Earth 'streetview' image of the intersection is below. Turn right onto Boards Crossing Rd, which winds through residential forested area and then splits into Forest Rte 5N02 and Boards Crossing. You want to take the left branch = Forest Rt 5N02, which leads to the campgrounds on the river after another ~2 miles. However, note that it's possible at thie no-reservations campground that is may be full before we get there, in which case our second choice is the Boards Crossing campground a couple miles back up and then down the road you came in on, down to "Boards Crossing" primitive campground. It would be a good idea to bring enough water for your personal needs in case we end up there. Here's the map
Here's the turnoff as you come up Hwy 4 at Dorrington, to turn right and head down to our campground possibilities |
The map to our campground possibilities. #1 is the upper area, with the Wakaluu Hep Yoo campground and SourGrass Campground. If those are full and you don't find me, I will try to post a note on the message board and tell you to go back down to the river, cross the river and we'll make the day-use area our focus, camping in the dispersed camping area behind the day use and along the trail above the river. |
Google Earth view of our Wakaluu Hep-Yo campground. The turnoff into the campground is just before you cross the river, on your left. If you cross the river you've gone too far. Drive up along the campground road and look for either a red van (Kirk's) or a white Cabrillo College van, or telescopes! |
The Stanislaus River near the bridge |
Another shot near our campsite |
If somehow (very unlikely) Wakaluu Hep-Yo campground is full, our secondary choice camp area is at the bottom of this image at the Sourgrass day-use area. It's dispersed camping, which means we just occupy what we want. There may be other campers here as well. |
Arrive at our campsite by around 6pm, if you're late, no worries. I can't fix you dinner so that aspect is moot! After you enjoy what dinner you brought, we'll take out the scopes and enjoy the beauties of the summer night sky. We'll study the galaxies and planets that grace the Summer '21 evening sky. Jupiter and Saturn will be rising in the East, and Venus will be setting in the west. The great Andromdea Galaxyis high. in the east. Our little "Local Group" - consisting of the Milky Way, Andromeda, and a posse of little groupie dwarf galaxies, are on the outskirts of the Virgo Supercluster (cluster of clusters!) of galaxies. Bring your chocolate chip cookies to enjoy around the scopes! Our astronomy club members Kirk B and JP Lane are planning on joining us with their monster 12" and 17" Dobsonian telescopes, and probe for distant quasars and some of the farthest objects possible for any amateur astronomer to ever see, BILLIONS of light years away!
The Delta Aquariid meteor shower produces about 15 meteors per hour beginning about midnight, and we can also hope to see a few early bright long Perseid meteors, which peak on Aug 12.
Alas, we are strictly forbidden to have any campfires. Bring warm clothes as we'll be above 4,000 ft elevation and it can get cool at night, even in late July.
Saturday Plan
7:30am Breakfast: Bring what suits you. I've promised my non-student helpers I'd make granola for them, but I am forbidden due to CoVid college rules from preparing any food for students.
10:30am After we clean up Breakfast, we'll carpool / drive the 45 minutes or so along the picturesque winding roads a few miles northwest of Arnold for either a guided tour of California Cavern labelled "Cave City on your map if it's open (might not), or if CoVid restricted, we'll hike to Natural Bridge on Coyote Creek and study similar formations in an underground stream environment. It's a beautiful spot, and cool too. If we go to California Cavern, students are responsible to pay the $18.50 fee - ( Group discounts for school groups of 20+ are available but likely not our small group). That's paid individually at the Cavern. Please bring $18.50 cash if we decide we want to do this tour. I'm making that a group vote decision, given our small group and other options.
Directions to California Cavern.
Follow me in the Cabrillo College Van and / or use the maps here, which I'll staple together as part of our "map package" when I see you on-campus Oct 6. Coming up from the campground and onto Hwy 4, we drive down the mountain, looking for Avery-Sheep Ranch Rd, onto which we turn right....
Here is where we turn right, onto Avery-Sheep Ranch Rd. From here, it's 17 miles and 40 minutes to the Californina Cavern |
Stay on Sheep Ranch Rd as it winds through the hills and "T" ends at Sheep Ranch Rd. Turn right onto Sheep Ranch Rd |
Stay on Sheep Ranch to Mtn Ranch, and turn left, and left again on Cave City Rd to California Cavern State Historical Monument at "Cave City". |
Mapquest Route. Might be a little slower on a Friday afternoon, though. |
If/After the caverns, we'll visit and explore a really interesting pair of places, where a creek has dissolved its way right through two ridges, coming out the other side. It's called "Natural Bridge" and is at the bottom of a 1 mile hike down to this fascinating place. Here, Coyote Creek disappears into a giant limestone hole in the canyon. It's a great place to relax in the water, swim, and cool off while listening to some of my 'micro-lectures'. Myself; I plan to swim from one side to the other and back! There's supposedly an even better example another thousand yards downstream, which has a trail to it and we can explore that as well.
Natural Bridge Creek, disappears into a hole, but you can walk or wade to the other side, 30 yards away |
Map to Natural Bridge hiking trail. It's also the way towards Moaning Cavern, which we visited back in '08 |
Our goals: Study the process of precipitation and calcium carbonate formation. I'll connect this to how we can determine the tipping point for the melting of the Siberian Permafrost in paleo climate. Very clever, ingenious idea worked out and successfully carried out by by Dr. Anton Vaks and his team 4 years ago. This is a key piece of science showing how serious our current climate change future will be.
After returning to camp, we'll explore the Stanislaus River canyon right below our campsites. We'll study glacier and water carved granite formations and lecture on the processes that shape canyons on Mars, the Moon, Mercury, Titan, and Earth. I'll also lecture on the Milakovitch cycles and their grounding in the semi-chaotic nature of gravity in the solar system, the last great Ice Age, and we'll have some relaxation time swimming in the river.
At the telescope; we'll use our computer-controlled 8" scope to direct us across the heavens' best study objects |
Saturday evening - Dinner's on your own, alas.
Follow up with more telescopic explorations of the evening sky. Contrasting galaxy types, nearby star clusters and the structure of the Milky Way disk that we live in. Late in the evening, the incredible objects of the Fall Milky Way and the Sagittarius Spiral Arm will be in the West, and the supernovae remnant Veil Nebula high overhead. We'll study the birth (in luminous emission nebulae) and death (in a final exhalation of their last breath) of stars, with the Ring, Owl, and Dumbell nebulae. My lectures will focus on the discovery that we live in a Galaxy, Cepheids as cosmological distance indicators, the discovery of other galaxies, and that they are moving away from our own with a speed proportional to their distance (the Hubble Law) and implications for the origin of our Universe, and then to the quantum early universe and the new paradigm of the Multi-verse, and how it explains why life in our universe is natural and to be expected.
Sunday Plan
Breakfast and clean up, Then, we'll aim the 12" scope w/ filter at the sun and I'll lecture on the solar cycles, their relation to sunspots, and to Earth climate. We will do one more hike, down to the river. It would be short.
We should be done before noon. On the way back down, consider stopping at Calaveras Big Trees if you have never seen a Giant Sequoia - largest organisms on Earth (I'm not going to count the creosote desert bushes or tangled underground fungus!). We might want an official stop on the way back, but I'd have to find something worthy of our attentions. Either way, we should be back in Santa Cruz by late afternoon if you have studying to do, so no worries.
* masks
* Meals are, this time, the responsibility of individual students. I'll have some food for my astronomy club help only.
* thermal forehead reading on your first show-up. Students at ALL feeling symptomatic before arriving, will be sent home immediately from camp.
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Transport yourself on all drives, tent yourself except with close family members.
* I'll sanitize/wipe down wherever the telescope is touched after each observer.
