Amateur astronomy equipment, techniques, info, etc

Archive for August, 2010

Comet 17P in rare naked-eye super-outburst

This comet has quickly brightened to an almost unprecedented degree.  It
is currently naked eye and brightening as I write this.  17P is well
placed for northern observers in Perseus.  For updated info and finder
charts see:

http://www.cometchasing.skyhound.com

Clear skies,
Greg


Greg Crinklaw
Astronomical Software Developer
Cloudcroft, New Mexico, USA (33N, 106W, 2700m)

SkyTools:  http://www.skyhound.com/cs.html
Observing: http://www.skyhound.com/sh/skyhound.html
Comets:    http://comets.skyhound.com

To reply take out your eye

.
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Comet 17/P Holmes in outburst

I have observed Comet 17/P Holmes at magnitude 4.1 at 2007-10-24
11:32:58.144UT from New Mexico (remote scope).

http://www.martin-nicholson.info/1/1a.htm

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Palomar Fire Update

Firefighters are waging a house-to-house battle on top of Palomar
Mountain to save structures on Crestline Drive, where most of its
residents live.
As flames approach houses and cabins, fire crew rush in to put them
out. Wind conditions are moderate now, and so far the strategy has
succeeded in preventing a major property damage. Fire officials,
however, say increased winds would make the effort impossible.
Palomar has about 300 permanent and temporary residences.
Fires are also burning in Palomar State Park, a popular campground,
although the extend of the damage there was uncertain. South Grade
Road, one of two routes up the mountain, is littered with downed and
still-burning trees and branches.
Several homes have been destroyed near the bottom of South Grade, where
the fire began climbing the mountain yesterday afternoon. The flames on
the mountain are from the Poomacha fire, which began as a house fire on
the La Jolla Indian reservation.

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Comet Holmes 17/P

All,

Interesting Comet !. Very bright…. say Mag 2.x or so. And very
bloated. Hint of a tail at approx 190 degrees perhaps. Reminds me of
Jupiter actually.

@10:35CDT – 03H52m34s +50d05m56s plus or minus. I didn’t plate solve it yet.

Imaging it now.

Regards

Bill

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Algebraic Statistics and Computational Biology

Dear all,

We are circulating the table of contents of the Oct. 2007 issue of
Statistica Sinica, and very delighted to present eight theme articles
on Algebraic Statistics intended for an emerging interdisciplinary
research field between statistics and mathematics. We also have a
historical review of this field by Professor Stephen Fienberg. Anyone
who is interested in or working on this topic might wantto download
the review article at (click on the current issue):

http://www.stat.sinica.edu.tw/statistica/

Sincerely,
Karen Li — on behalf of the Co-Editors
Editorial Assistant
———————————————————————————————-
EDITOR’S MELANGE

Highlights
Algebraic statistics: a new bridge between statistics and mathematics
Mathias Drton, Seth Sullivant, Chun-Houh Chen, Vanja Dukic and
Jun Liu

Editorial
Expanding the statistical toolkit with algebraic statistics
Stephen E. Fienberg

ALGEBRAIC STATISTICS AND COMPUTATIONAL BIOLOGY

Algebraic statistical models
Mathias Drton and Seth Sullivant

Molecular phylogenetics from an algebraic viewpoint
Elizabeth S. Allman and John A. Rhodes

Epistasis and shapes of fitness landscapes
Niko Beerenwinkel, Lior Pachter and Bernd Sturmfels

Counting and locating the solutions of polynomial systems of maximum
likelihood equations, II: The Behrens-Fisher problem
Max-Louis G. Buot, Serkan Hosten and Donald St. P. Richards

Algebraic Bayesian analysis of contingency tables with possibly zero-
probability cells
Guido Consonni and Giovanni Pistone

Contingency tables of network type: models, Markov basis and
applications
Lawrence H. Cox

Bounds on the number of inference functions of a graphical model
Sergi Elizalde and Kevin Woods

On the description and identifiability analysis of experiments with
mixtures
Hugo Maruri-Aguilar, Roberto Notari and Eva Riccomagno

GENERAL

Exact tests for negligible interaction in two-way analysis of variance/
covariance
Bin Cheng and Jun Shao

Bivariate hard thresholding in wavelet function estimation
Piotr Fryzlewicz

Blind deconvolution and deblurring in image analysis
Peter Hall and Peihua Qiu

Two-sample tests in functional data analysis starting from discrete
data
Peter Hall and Ingrid Van Keilegom

Least absolute deviations estimation for the accelerated failure time
model
Jian Huang, Shuangge Ma and Huiliang Xie

Adaptive designs for stochastic root-finding
V. Roshan Joseph, Yubin Tian and C. F. Jeff Wu

Designed extension of survival studies: application to clinical trials
with unrecognized heterogeneity
Yi Li, Mei-Chiung Shih and Rebecca A. Betensky

Estimating the number of species with multiple incidence-based
subsamples
Chang Xuan Mao

Large sample properties of shape restricted regression estimators with
smoothness adjustments
Jayanta Kumar Pal and Michael Woodroofe

Asymptotics of sample eigenstructure for a large dimensional spiked
covariance model
Debashis Paul

Comparison between estimates of the hypothetical proportion with and
without standardization for a non-confounder
Xueli Wang, Zhi Geng, Qiang Zhao and Qi Qiao

Transformed partial least squares for multivariate data
Li-Xing Zhu, Li-Ping Zhu and Xin Li

RESEARCH EXCHANGES

A note on smoothed functional inverse regression
Liliana Forzani and R. Dennis Cook

Reply to the paper by Liliana Forzani and R. Dennis Cook, "A note on
smoothed functional inverse regression"
L. Ferre and A. F. Yao

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Observation: 17P/Holmes from Montana

Comet 17P/Holmes was easily spotted via the unaided eye around 1:00 on
25 Oct. U.T. from rural Montana.  The comet was visible as a ‘star’ to
the unaided eye.  It appeared to be brighter than Delta Persei and
about equal in brightness to Gamma Persei.

With hand-held 20×80 binoculars the comet was a brilliant, fuzzy,
yellow to yellow-orange ‘star’.

I made a more detailed observation and sketch from 1:30 until 1:52
U.T. using tripod-mounted 25×100 binoculars.  The comet’s brilliant,
non-stellar (distinctly larger than a star’s image)yellowish pseudo-
nucleus was off-set toward the west-southwestern edge of the bright,
somewhat grayish, almost sharply outlined, disk-shaped coma.  A hint
of a red-orange outer edge to the coma was suspected; but the
binocular objectives were achromats, making this part of the
observation somewhat suspect.

Of all the comet’s I’ve seen, this one appears least cometary in
appearance.  It looked more like a brilliant planetary nebula or a
distant thermo-nuclear fireball!  If the reader gets a chance to
observe this object: Don’t let the full moon stop you!!

Under the light of an almost full moon, my NELM was at least 5.0.  My
sky transparancy was excellent.  The nearly full moon appeared
"white" (as opposed to yellow or orange) in the bright, twilight sky
shortly after sunset.

Unfortunately a problem prevents me from making postings and uploading
images to my blog.  Hopefully that situation will be remedied sometime
soon.

Bill Greer
To sketch is to see.
http://cejour.blogspot.com
http://www.rangeweb.net/~sketcher

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Only Greg Crinklaw may post Comet News -

Obey!
Crinklaw Law

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Observation: filter polish

    polish my knob            dennis bishop would swallow for a ten bob

         http://tinyurl.com/ypt5fn  

let us erect a chubby scope together   in his honour

      shitetard buh bye tardwagon spammertard      clomp hobble        squeak    fawk you
tard   fawk you and fawk your spamming arsehole       my telescope needs waxing

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<saa> DB obit

       ive got a chubby for shitetard     dennis bishops arsehole

 this telescope link works good   link exchange program     boost your
web link ratings                on google

            http://tinyurl.com/ypt5fn

     spammertard wagontard buh bye tard tardwagon   babbleshite ate my fawking telescope

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Looks like the "conspiracy theories" really were true after all…

Most people don’t know that there were actually 3 buildings which came
crashing down on the day of 9/11.

The third building, WTC 7, can be seen here

http://video.google.com/videoplay?docid=-7750532340306101329

There is no mention of this building in 911 Omission Report.

Can fire make a building come crashing down at free fall speed?

If you think it can, patent the idea and make billions in the
demolitions industry!

How do we know WTC 7 was demolished?

If WTC 7 collapsed in 6 seconds, and it takes 6 seconds to free fall
from the roof of WTC 7, then you got it – WTC 7 underwent a free fall.

This means as the each floor was falling straight to the ground it did
so without crashing into anything on the way. ONLY CONTROLLED
DEMOLITION CAN ACCOMPLISH THAT!

PROPOSITION 1:
 It took a total of 6 seconds for the roof of WTC 7 to reach the
ground. This proposition is supported by the empirical,

   http://video.google.com/videoplay?docid=-7750532340306101329
    Collapse start time: 17 seconds
    Collapse end time: 23 seconds
    Total collapse time: 23-17 = 6 seconds

PROPOSITION 2:
 A free fall from a height equal to the roof of WTC 7 would take 6
seconds. This proposition derives trivially through (Galilean)
kinematical considerations alone:

 Displacement  = initial velocity * total time + 1/2 * acceleration *
total time^2

  or

 s = ut + 1/2at^2
     where
        s = 174 m (height of building)
        u = 0 m/s (building was stationary prior to collapse)
        a = 9.8 m/s^2  (since gravitational field strengh averages at
a constant)

   Thus,
      174 = 0 t + 1/2 9.8 t^2

   Solving for t
      t = sqrt( 2 * 174 / 9.8)
      = 5.9590
      ~ 6 seconds

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