The Outsider's Inside View post#005-Show and Tell


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Profile KevinDouglasPhD
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Message 520022 - Posted: 19 Feb 2007, 21:25:33 UTC

Today's a holiday, so the SSL is very quiet. I'm not clear as to whether it's President's Day because it's Washington's birthday, or if it's a generic holiday in honour of all presidents, or what. If the apostrophe was placed to read Presidents' Day, then I'd assume this day was for two or more presidents. As it is, I don't have a president, but the province of Alberta has a holiday today called Family Day. My family's sick with the flu, so I'm better off having a holiday at work.

My 89th SETHI cube just finished, and I expect 3 more will finish by tomorrow, before Matt and Eric go to work on sidious and ewen. Maybe even 5 will finish, but that's pushing it. Here is a picture of the HI sky, with the positions of my 144 SETHI cubes overlaid:

The data are from the Leiden-Argentine-Bonn (LAB) survey. If we zoom in a bit, we can look at how much overlap there is between cubes, as well as my naming scheme:

As for what SETHI does compared to LAB, here are two images of the same region. The first is LAB, the second is SETHI:


As you can hopefully see, the angular resolution of SETHI is much better. Unfortunately there are bad pixels caused by RFI and such, but at least we are getting a clearer view of the HI sky. The data from GALFA will improve this view even more. Here are a couple other images, this time comparing LAB to data from the Canadian Galactic Plane Survey:


These images show the effect of having a factor of 10 or so in resolution. These images are also a lot cleaner than the SETHI data, but it probably cost 1000 times as much money to produce those data too.

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Message 520034 - Posted: 19 Feb 2007, 21:47:17 UTC


Thank You for the Posting (Update) . . . Here's hopin' that your Family gets

better soon Kevin. Your Visual Aspect of this work you are doing - reminds me

of my 'Visual Music Score' Research @ McGill University (1972).

Beautiful Artworks you're producing there Sir . . . can't wait 'till the day

comes i understand all this with clarity ;)

Keep the Science comin' and Thanks again.



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Message 520082 - Posted: 19 Feb 2007, 22:38:17 UTC - in response to Message 520034.


Your Visual Aspect of this work you are doing - reminds me
of my 'Visual Music Score' Research @ McGill University (1972).


Thanks, Nobody. McGill, eh? They do quite a bit of radio astronomy work, especially in pulsar research. It must've been cool to be in Montreal in the 70's - what a hockey dynasty the Canadiens were back then (esp late 70s). I don't know if you're still there, but that's a terrific city, probably my second-favourite in Canada after Vancouver. Too bad the Habs aren't doing so well lately...

Visual Music Score sounds cool too. In my teens I used to love reading sheet music along to songs by Metallica and Guns 'N Roses, in those guitar tablature books. What a nerd I was. Can you describe your research a little more (this is show and tell time, after all)?

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Message 520149 - Posted: 19 Feb 2007, 23:42:23 UTC - in response to Message 520022.

[…] As it is, I don't have a president, but the province of Alberta has a holiday today called Family Day.

Apparently the Tories neglected to add a day to the statutory holiday entitlement when they declared Family Day, so it’s mainly government, white-collar and union workers who actually get the day off. The rest of us here in the real world ;) are dependent on our employers’ generosity—so I’m working today, as I have every year since this ostensible holday was established …

[…] Here are a couple other images, this time comparing LAB to data from the Canadian Galactic Plane Survey:


I take it we’re looking at part of the Perseus Arm on the right there. Do any of the white ‘condensations’ correspond to the large visible emission nebulae (e.g. the “California” Nebula or the “Heart & Soul”) that are such popular widefield photographic targets from the northern Milky Way?
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Message 520166 - Posted: 20 Feb 2007, 0:01:08 UTC
Last modified: 20 Feb 2007, 0:08:13 UTC



Copyright 1972 a Leonardo Studios Production in Collaboration w/ McGill - Queens University Press


> see my Gallery @ McGill - Queens University Press


> Regarding the Visual Electronic Music Scores (of the Future) that were eventually Published by the Alumni Society @ McGill -

the Graphic above is one of the works that developed out of that Research. Bengt Hambraeus (Karlheinz Stockhausen was his Mentor)

was also Lecturing @ the McGill Music Facility at that time and i Lectured on the 'Philosophy of Poetry' - to Graduate Students in

Psychology. Will have to send the further Research Notes and Contents to you one of these days. I understand that Dr. Anderson did

Research in Music (though he states he's not doing any nowadays). i have also Collaborated with Drew Lesso, (he Studied w/ Stockhausen

during the 70's - while i was @ McGill) and he & i met @ a Los Angeles NightClub (Called 'Al's Bar) - which i Managed and we Showcased

many bands (as in 'The Ramones', 'Go-Go's', and most of the Punk Bands of that era). Drew and i virtually Studied @ the same time -

though he in Germany, and i in Montreal - with the two 'Fathers of Electronic Composition' . . . go figure - that we would meet in

Los Angeles and strike up a Conversation - that not only took us back in time - but envelopes today (the Present) with our being

very good friends and Collaborators in Music and Art. History can be so entertaining and as well - rewarding.


< i am @ Present - working on my Artwork (includes Visual Music Scores) and working for the Past Seven Years on a re-write of a film

called 'It All Came True' - a 1940's Bogart / Warner Bros. Gangster Flick . . . one day the Script will be finished ;)


note: In the 70's - i used to hang out @ 'Your Father's Mustache' - an 'Establishment' Club where

Frank Mahovlich # 27, Left Wing, Toronto Toros & J.C. Tremblay # 3, Defenseman, Quebec Nordiques

used to come to after the games (@ the Forum) . . . there were many a time when their Hockey Sticks, which they brought with them - and would use

whenever anybody thought they'd like to say anything derogatory regarding the game or the TeAms . . . what brawls (drunken) that would break out -

same as the ones they eventually brought onto the Forum floors during the games - oh boy . . . don't need to go here - it's a funny past . . .




< ps - i live in Cherokee Woods (Indian Trail, North Carolina) . . .


richard w lubrich jr aka nobody @ SETI / BOINC since February 29 2007



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Message 520512 - Posted: 20 Feb 2007, 21:44:40 UTC - in response to Message 520149.

I take it we’re looking at part of the Perseus Arm on the right there. Do any of the white ‘condensations’ correspond to the large visible emission nebulae (e.g. the “California” Nebula or the “Heart & Soul”) that are such popular widefield photographic targets from the northern Milky Way?


The California Nebula's a few degrees below that image (coords are around l=160, b=-12). The Heart & Soul Nebula are a few degrees further along the Perseus arm, around l=135 degrees. Here's an HI view of that part of the Galactic Plane:

I know the Heart & Soul nebulae better by what is imaginatively called the W3/4/5 region. Here's an image of the dust temperature for that region. It really shows the nebulae quite nicely:

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Message 520593 - Posted: 20 Feb 2007, 23:22:35 UTC
Last modified: 20 Feb 2007, 23:26:19 UTC

warning, joke ahead
Sethi finds signs of aliens and alien crafts

The alien (or atleast his/her head) can be found at 1.50GL and 133 degrees.


The classic "disc" flying saucer (slightly askew) can be found at 3 GL and 131.5 degrees.

Other saucers (top/bottom view of craft) can be seen centered around 1.5GL and 134 degrees (just above aliens head).

Job complete, I guess we can all go home now. Oh wait, I am home.

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Message 520603 - Posted: 20 Feb 2007, 23:53:03 UTC - in response to Message 520166.

History can be so entertaining and as well - rewarding.


Thanks for the background info, nobody. It's interesting to think of music as a visual art in addition to an aural one. Who's that jazz musician whose song titles look like weird flow charts?

My 94th SETHI cube is done. Only 50 more to go!

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Message 520610 - Posted: 21 Feb 2007, 0:08:47 UTC
Last modified: 21 Feb 2007, 0:18:02 UTC

After thinking about my joke post a while, I had a more serious thought. I assume the clouds are outside our planetary system? If so, could the background
IR perform like "backlighting" to show solid objects between us and it? Could it be used to search for NEA/NEOs?

I was joking with myself thinking about how NEO's are found by looking at position shifts of objects on film/screen over time. The joke part was they keep
talking about identifying them by seeing their sideways shift. heck, if there is a sideways shift then for a while, we're OK. I'm worried about the ONE
that doesn't appear to move at all, but gets larger as it's headed for me. LOL

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Message 520613 - Posted: 21 Feb 2007, 0:16:53 UTC
Last modified: 21 Feb 2007, 0:18:21 UTC

nevermind, I thought out my own answer. It would be no, atleast not until scantimes could be greatly increased. The collection period to
fill in the data would be too great for moving close objects.

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Message 520795 - Posted: 21 Feb 2007, 5:27:46 UTC - in response to Message 520022.

[quote]Today's a holiday, so the SSL is very quiet. I'm not clear as to whether it's President's Day because it's Washington's birthday, or if it's a generic holiday in honour of all presidents, or what. If the apostrophe was placed to read Presidents' Day, then I'd assume this day was for two or more presidents. [quote]

For most of my lifetime (66 years), there were two holidays in February; one celebrated Washington's birthday, and the other was for Lincoln's birthday. At some point after Martin Luther King Jr was assinated, the January holiday in King's honor was added, and the two presidential holidays in February were merged into one, on Washington's birthday, I believe. That way, employers still offered the same number of holidays per year, but also honored King.

Another topic: I have recently become more and more impressed with the scientific knowledge of some members of the crunching community as well as the Seti folks. These recent posts are to me, just amazing (and way over my head). I had grown so tired and disgusted with the "let's quit Seti" movement and all that inane chatter that I had quit reading the boards. I only read what Matt and Eric posted. These recent posts are way more informative and positive in nature.

To Matt: Yes, your posts to the front page are very helpful and appropriate, in my opinion. Thanks.

Whit

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Message 521639 - Posted: 22 Feb 2007, 17:16:03 UTC - in response to Message 520610.

After thinking about my joke post a while, I had a more serious thought. I assume the clouds are outside our planetary system? If so, could the background
IR perform like "backlighting" to show solid objects between us and it? Could it be used to search for NEA/NEOs?


To be backlit, I would think the foreground object would have to be colder than the IR background. These dust clouds are around 15-30 K, while objects in the solar system are typically on the order of 100 K. I think using IR as well as optical telescopes to track NEOs would be a good idea though, since you might be able to detect the blackbody radiation of the object itself, in addition to sunlight reflecting on its surface.

I was joking with myself thinking about how NEO's are found by looking at position shifts of objects on film/screen over time. The joke part was they keep
talking about identifying them by seeing their sideways shift. heck, if there is a sideways shift then for a while, we're OK. I'm worried about the ONE
that doesn't appear to move at all, but gets larger as it's headed for me. LOL


Yes, that's a sci-fi movie waiting to be made. Such an object would have to have a remarkable orbit, one that stays in the same place on the sky as the earth rotates, even as it gets very close to us. That would be one intelligent NEO...

So yesterday Eric and Matt went to work on several machines, which required me to stop my SETHI crunching, and actually froze my workstation for most of the day too. So I worked mostly on my upcoming seminar and I went down the Hill to talk to some other radio astronomy people for a while too. Everything seems to be mostly back in working order. Apparently the memory donated for ewen could not be installed, so perhaps it'll be put to good use somewhere else. At least ewen now has its disk space properly partitioned, and the gigabit switch between ewen and some of the other machines I use (lando, thumper) seems to be working well. So I hope that speeds up my SETHI processing. I have 20 running right now, and hopefully I can bump that up to 25 once Matt's done checking things out with sidious. I only have 49 SETHI cubes left to go, so sometime in March I just might get through all this. But now that ewen's got more disk space, I have to concentrate on GALFA data some more.

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