Cometary Tales Astronomy & Astrophysics,Blog Check out some astronomy-related videos

Check out some astronomy-related videos

The Pixel Gravity crew are interested in astronomical phenomena outside the computer as well as creating simulations to run.  Check out some of our videos on YouTube:

https://www.youtube.com/watch?v=oUuR-HOxFwQ&feature=g-upl

This one gives you the entire Transit of Venus of 2012 in just ten seconds.  Have a look!

You might also like to read:

PassagePassage

Moon & Spica

Eclipsed Moon With Spica

 

 

A few weeks ago, we had a beautiful lunar eclipse visible in North America.  It was well worth sitting out to watch the Earth’s shadow advance until the Moon was completely covered and glowing with a warm red hue, then retreat until the Moon shone bright once again.  Here is a combination of a poem written for a workshop many years back, inspired by another lunar eclipse, with a few photos from this year’s event.  Multitudes of astrophotographers caught fine images of that eclipse.  This time, my equipment on hand was my hardy little point-and-shoot Lumix, which yielded many images suitable for artistic manipulation, especially with effects added by the drifting fog that interrupted our clear view.  Mars was in view as well, so I’ll include one image with Mars.  Can you spot it?

I watch the Mother walk my night,

spreading her darkness through my shadows.

She turns to me as the night turns, and I watch, I gaze,

rapt in the music of her light.

 

2014 April 14-15 Total Lunar Eclipse
Wrapped round and full in the stillness of this, my night,

she draws in light and darkness from the sky,

and sets them in my hands and at my feet,

until the whole land is an image of sky,

until I am full, full round and whole,

wholly wrapped in the music within my darkness.

 

Fog Rainbows
She waxes as the night wanes, and I gaze, gaze,

until I dream I am a fish which has never before known water,

and now, for the first time, breathes …

until I dream I am a child who has never known her name,

and now, for the first time, dreams …

 

Artist's Impression
dreams she stands with a woman, a stranger,

in a land which bears an image of sky.

The other, the stranger, is silent beside her,

while she speaks to the mother as a favored daughter.

As she speaks, I give back through my hands

the light and darkness which is the sky

until the land rests again beneath my shadows,

until the child knows me for herself.

 

Floating in the Ether
Even as we greet and join each other,

the Mother steps over the edge of the world.

Even as the stars first claim the sky,

I breathe the mist of my first morning.

 

Bloodshed Moon

 

Friday at BayCon 2013Friday at BayCon 2013

As exemplified by Thursday evening’s brief exposure to the timesense-warping effects of Triskaidekaphobicon, clearly the theory of attending BayCon is direct and clear, albeit a little boring, while the practice thereof is circuitous and exciting.  Here we will continue our study of these contrasts by once more comparing plans and realities with a half-day experience on Opening Day:

Time Frame What the Plan was What really happened
Friday afternoon Arrive early, go to opening ceremonies, then “Irreproducible Results” panel, then to a reading by Lois McMaster Bujold. Just couldn’t get out the door.  Forgot reading glasses, then key, then left door slightly ajar while trying to find my sunglasses (for driving), then became convinced (older/medical-issues) cat had sneaked out, so searched out front and called out back and looked under furniture.  Finally discovered cat hunkered down behind a chair.Arrived halfway through Irreproducible Results panel, but got a front-row seat & enjoyed panel, from nuts and bolts revelations such as that the staff of JIR are unpaid to the audience teaching JIR’s editor the song “There’s a Hole in My Bucket” and locating for him several online sources for flexible rubber with which to make graph paper.

I took a quick look at the Art Show, where they were nice enough to take care of my bag for me.  Theresa Mather‘s dragons were there.  Which one is it that I bought for Tirion?  I wondered, Should I bid on one of these dragon-butterfly prints?  I decided to come back later and sign up as a bidder.

All of the cat-oriented artwork reminded me that I was worried about my cat (not to bore anyone with a pet’s medical issues, but no-one was home to check on Manta that day), but didn’t want to miss the reading.  So stayed put for that.

Bujold read a piece she doesn’t really plan to publish at present, a work-in-progress that may or may not become part of something, but it’s a “Miles” story, so she knew it would please her fans.  The humor bits got big laughs.  And she was good about doing a little Q&A while waiting for late-comers to arrive. Turns out that one intellectual goal for “Curse of Chalion” was to work out a society in which religion had a basis in physical reality.

By then, it was after five, but decided to drive home to check on the cat –through Memorial-day weekend traffic.  The freeway was a parking lot from San Thomas Expressway to, probably, LA.  So, enjoyed elaborately costumed Fanime fans thronging streets of downtown San Jose on the unfreeway route home.  Made pretty good time, actually.  Oh, yes, and the cat was fine.  Time for a quick freezer-cleanup dinner and half an episode of “Castle” before evening sessions.

Friday evening Find out what a “boffer weapon” is and make one in the new DIY Room.  Then go upstairs and learn some Regency dancing.  Maybe get in to panel on talking to people. Boffer-making was not in the DIY room.  I had to go alllll the way to the “Ballroom” and creep past the big room where they were having the “meet the guests” reception.  Way too scary in there.   In the farthest room, kids were whapping each other with foam objects.  Aha, that’s boffing.

But no one was making weapons.Wandered about. Became “brave” and strolled nonchalantly through the reception.  Darn, there had been food.  Extroverts were  happily chatting each other up.

Wandered back to boffers room to watch the swordplay.  Maybe the “make your weapon” thing is over?  I wondered.  The program said they started at 6 and it was already nearly 8.  Suddenly, someone called out, “Who wants to make a weapon?”  Apparently, I had arrived at exactly the right time.

Two hours later, I was working on the trickiest duct-taping tasks on three swords at once, after two teen sisters frantically realized they must dash off to what they described as “Mom’s Concert” and begged for coverage while they were away.   Another hour later, and they were back in time for adding the blade tape and the final decorations.  Clever girls.

So finally 11:30 rolled around and I had myself a lovely PVC and pipe-insulation and duct-tape sword.  But not prepared to wield it yet–too exhausted.  Parked my sword in the car and wandered about a bit.  Regency dancing was already up to a lesson on the Congress of Vienna waltz, which I can’t do with my broken shoulder yet, and which they use as the final dance.

Oh, well.  Time to go home.  Big plans for tomorrow.

 

There are anime fans at BayCon, too.

There are anime fans at BayCon, too.

Day Zero: Get Thee To FlagstaffDay Zero: Get Thee To Flagstaff

There is no simple way to orchestrate the travel here.  Yes, planes fly to Flagstaff, not the same airlines as fly to the big airports but their small-scale partners.  There’s a shuttle bus from Phoenix, and if you were facing a long layover the van could even be faster.

A view of the Grand Canyon we did not see on our flights (courtesy of Google Earth)

But we arrive in Phoenix with plane tickets in hand and actually welcome a half-hour flight delay, because it allows us a chance to buy lunch.  I even have time for a stroll through the overpriced-souvenir shop, where I hand over $2 for a pair of elastic bands someone in the shop has put out to support a fundraiser for improving water supplies in Haiti.  Seems appropriate. And the chance to put up our feet for a half-hour is welcome, as we’re already tired.  We actually began yesterday, on Day “-1”, with a five-hour drive to rendezvous with Clark’s friend, who lives near Reno, so we could all travel together the whole way.  Our Day Zero expedition consisted of a drive from the pine forests of Plumas County to the desert flats of Reno’s outskirts, a freeway jaunt to the airport (chauffered by another friend), a big plane to Phoenix, a little plane to Flagstaff, then a search for the airport shuttle.  We will have a powerful case of deja vu on Day Fourteen.   You’ll see.

Flagstaff’s airport is a fabulous, small airport.  My favorite kind.  One baggage claim zone.  No trouble meeting a shuttle bus right outside.  As it happens, the other folks sharing the van are another couple going on our trip.  And they have obtained an intelligence report from the rafting company, OARS, that we five will be the only “guests” staying on the raft trip for the full fourteen days.   The rest of the group will leave halfway (and hike out), to be replaced by a new batch of folks for the second week.  So we will actually get to spend a full fifteen days with Todd and Eliza.  Oh, yeah, and until such time as the members of our trip group authorize me to use their names, I will be using fake names, just in case I goof up and say something upsetting or someone turns out to be in Witness Protection.  I won’t do the same for the crew, since I want to actually give them the props they deserve.  In fact, I’d hope this whole piece could be considered a humungous letter of reference for each and every person on the crew.  I’d initially given myself permission to use my own and my husband’s names, but he protested, so here goes.  He is herewith dubbed “Clark”.  And what to call Childhood Friend?  How about Lana?  And surely that makes me “Lois”.  The only funny thing about this, is that I actually have a friend called Lois–so, hey, Lois, you can tell people this is you.  (Fair warning, though, I’m not the heroine of this story!)

The key element of Day Zero is the evening briefing from the Trip Leader.  We gather in one of the Radisson Hotel’s conference rooms.   (The Midway guests also will have a briefing, but not by the Trip Leader , as she will be a mile downhill at the time.)  So we meet our first authentic River Guide.  This is Billie Prosser, who’s been whitewater rafting since she was a teenager, over fifteen years now, much of that time in the Grand Canyon.  These days, she chooses to do only a few of these Grand Canyon trips a year, giving herself the chance to work on other rivers and also to have time for a private trip, as time permits, to enjoy the Canyon without having to take care of people like us.

At the meeting, we also get our first glimpse of our fellow travelers all together.  We are heavily loaded with Californians and Canadians.   There are three women from Canada—their menfolk didn’t want to come.  There’s two father-son duos: one a dad and his athletic teenager, the other a Bechtel project technician taking a voluntary layoff to make the trip with his dad, a (putatively) retired actor and writer.  The Fab Five (Todd & Eliza and the three of us–Lois, Clark, and Lana) are all from California.   The actor, who takes care during the meeting to firmly establish that he’s the most-senior member of the troupe, has also brought along a childhood friend—a woman he hadn’t seen since high school.  While he keeps us entertained, I get the vague feeling he sort of expects someone to recognize him.  Then there’s another triad…a husband and wife and one of their friends.  Is that sixteen?

We get a quick summary of what to expect in the morning.  The crucial item is to have our gear packed and in the lobby by quarter to seven and be ready to leave by seven.  There’s a little last-minute advice on what to be sure to bring.  In case something’s been forgotten, there’s a WalMart in walking distance.  We’re advised to bring lots and lots of moisturizer.  I ask for a definition of “lots”, which it seems is a 16 oz bottle per person per week.  Oh, my goodness, I didn’t bring that much, so we have a trip to WalMart in the plans already.  We’re issued our “drybags”, each labeled with our own personal real names.  (Amazingly, they don’t know to use the fake names I will make up in the future for this blog.)  And Billie gives us a five-minute seminar on how to seal the drybags.  This is important, as all of our clothing and personal items go in this bag, which will then be tied onto a raft and frequently doused with water.  We’re each also issued a small drybag.  The big bag is inaccessible except in camp.  The day bag serves to keep dry what we need to keep dry but have access to during the day.  And we’re allowed to bring whatever we like in our daypacks as well, provided we understand that these will get drenched in larger rapids or if it rains.  The drybags don’t have our personal names on them.  Instead, they each have an identifying name written in Sharpie,  to individualize them.  We just each have to remember our bag’s name.  Mine is “Turpentine Broom”.  Lana’s is “Grease Bush”.  And Clark selects the distinctly memorable “#73”.  Mine is the best.  Here is all about Turpentine Broom  and Grease Bush.  I expect we’ll encounter these plants on our journey.  In the meantime, the names help, as the bags come in only a few colors.

I’m relieved to hear there will be a bag for boots, as this will make room in my kit for all that moisturizer.  Others are relieved to hear that their beer and wine orders have been filled.  Some are anxious to double-check on that after the meeting.  Billie has the checklist.  Evidently, this is a common anxiety.

Then we are off to WalMart.  Yes, our first act upon crossing the moment into our trip environment is to walk down a suburban city street, past a dark and quiet Home Depot, an active supermarket, and a Bank of America with lights glowing invitingly above its ATM, to shop in the megabehemoth of a store that was launched just a few miles from Clark and Lana’s home town.   But oh, they do indeed have It All.  More sunblock.  I must have more sunblock.  Moisturizer, per Billie’s recommendations.  Handy dry facewash cloths to get all that sunblock off.  And a tripod.  What was I thinking, leaving home without a tripod?  And a little mini flex-tripod for Clark.  Sweet.  Now all we have to do is haul this all back to the hotel and get everything crammed into our bags.

And, well, the bag-cramming takes a little while.  Maybe more than a little while.   Part of it is deciding which things are OK in the backpack (maybe in a Ziploc bag, maybe not), which need to go in the daybag, and which can be done without and stuffed in the main drybag.  I have the extra variant that I really have 2 daypacks. One is a one-shoulder sling pack that keeps my cameras and other hiking essentials from bearing down on my healing shoulder and when not in use tucks into the main pocket of my large daypack.  The main daypack takes my raingear, a dry set of fleece sealed in ziplocs, my tripod, and other handy items.  It’s big, it’s bulky, I will make Clark carry it as much as possible.  But it all fits.  And while I fancy myself adept at this sort of thing, it is Clark who is already proving to be better at sealing the big drybag.  He says it is just that he can squish it down better, being a bit heavier, but I think there is more to it than that.  I will keep insisting on doing my bag myself for about four more days.  Then I will give up and let him do it for me.

One last shower and a thorough hair washing.  It will be 2 weeks without a shampooing, at least for me.  I do not want to look at the setting on the alarm clock.  It is just too awful to contemplate.

 

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