Re: [Numpy-discussion] Finding Star Images on a Photo (Video chip) Plate?

On Fri, May 28, 2010 at 8:31 PM, Anne Archibald wrote: > On 28 May 2010 23:59, Wayne Watson wrote: > > That opened a few avenues. After reading this, I went on a merry search > with > > Google. I hit upon one interesting book, Handbook of CCD astronomy (Steve > B. > > Howell), that discusses PSFs

Re: [Numpy-discussion] Finding Star Images on a Photo (Video chip) Plate?

On 28 May 2010 23:59, Wayne Watson wrote: > That opened a few avenues. After reading this, I went on a merry search with > Google. I hit upon one interesting book, Handbook of CCD astronomy (Steve B. > Howell), that discusses PSFs. A Amazon Look Inside suggests this is mostly > about h/w. I tried

Re: [Numpy-discussion] Finding Star Images on a Photo (Video chip) Plate?

That opened a few avenues. After reading this, I went on a merry search with Google. I hit upon one interesting book, Handbook of CCD astronomy (Steve B. Howell), that discusses PSFs. A Amazon Look Inside suggests this is mostly about h/w. I tried to figure out how to reach the scipy mail list,

Re: [Numpy-discussion] Introduction to Scott, Jason, and (possibly) others from Enthought

Fri, 28 May 2010 12:13:57 -0500, Travis Oliphant wrote: [clip] > I think this makes sense so that we can reschedule NumPy 2.0 for > September and still provide a release with the Python 3k changes (I am > assuming these can be done in an ABI-compatible way). As far as I remember, the Py3 changes d

Re: [Numpy-discussion] Finding Star Images on a Photo (Video chip) Plate?

On 28 May 2010 21:09, Charles R Harris wrote: > > > On Fri, May 28, 2010 at 5:45 PM, Wayne Watson > wrote: >> >> Suppose I have a 640x480 pixel video chip and would like to find star >> images on it, possible planets and the moon. A possibility of noise >> exits, or bright pixels. Is there a know

Re: [Numpy-discussion] Finding Star Images on a Photo (Video chip) Plate?

On Fri, May 28, 2010 at 5:45 PM, Wayne Watson wrote: > Suppose I have a 640x480 pixel video chip and would like to find star > images on it, possible planets and the moon. A possibility of noise > exits, or bright pixels. Is there a known method for finding the > centroids of these astro objects?

[Numpy-discussion] Finding Star Images on a Photo (Video chip) Plate?

Suppose I have a 640x480 pixel video chip and would like to find star images on it, possible planets and the moon. A possibility of noise exits, or bright pixels. Is there a known method for finding the centroids of these astro objects? -- Wayne Watson (Watson Adventures, Prop., Ne

Re: [Numpy-discussion] Gauss-Newton Method in Python?

Let (Xi,Yi) be the positions of your stars on the sky. i in the 1 to N range. Let (Xj,Yj) be the positions of your stars images (PSF) on your picture. i in the 1 to N range. You can parametrize the distortion this way: Xj_param = Px(Xi,Yi) Yj_param = Py(Xi,Yi) where Px and Py are the two polynomial

Re: [Numpy-discussion] Gauss-Newton Method in Python?

I'm doing plate reduction on astro photos. There's non-linearity in the lens.  Basically, one is trying to estimate several lens parameters by look at a field of known stars versus ones measured on a photo plate. The author states it can be solved by taking first  derivatives to linearize matte

Re: [Numpy-discussion] Gauss-Newton Method in Python?

What problem are you trying to solve. The leastsq algorithm in scipy is effectively Gauss-Newton when that is appropriate to the problem. Chuck On Fri, May 28, 2010 at 12:36 PM, Wayne Watson wrote: > Is Subject method available in Python? > > -- >Wayne Watson (Watson Adventures, Pro

Re: [Numpy-discussion] Installing audiolab on python 2.6

*ok problem solved i close the topic sorry i just had to reinstall libnsdfile correctly thanks* 2010/5/28 arthur de conihout > Hi > I reinstall it on a different machine i got the same error with the nsdfile > no warning anymore with audiolab . > I followed these points: > > Requirements¶

Re: [Numpy-discussion] Installing audiolab on python 2.6

Hi I reinstall it on a different machine i got the same error with the nsdfile no warning anymore with audiolab . I followed these points: Requirements¶ audiolab requires the following softwares: -

[Numpy-discussion] Gauss-Newton Method in Python?

Is Subject method available in Python? -- Wayne Watson (Watson Adventures, Prop., Nevada City, CA) (121.015 Deg. W, 39.262 Deg. N) GMT-8 hr std. time) Obz Site: 39° 15' 7" N, 121° 2' 32" W, 2700 feet There are no statues or memorials ded

Re: [Numpy-discussion] Introduction to Scott, Jason, and (possibly) others from Enthought

On May 27, 2010, at 6:51 AM, Ralf Gommers wrote: On Wed, May 26, 2010 at 12:23 PM, Travis Oliphant > wrote: On May 25, 2010, at 5:06 PM, David Cournapeau wrote: > On Wed, May 26, 2010 at 6:19 AM, Charles R Harris > wrote: > >> Sounds good, but what if it doesn't get finished in a few mont

Re: [Numpy-discussion] curious about how people would feel about moving to github

Neal Becker wrote: > I prefer python, so I prefer mercurial > > http://hg-git.github.com/ Dag Sverre ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion

Re: [Numpy-discussion] curious about how people would feel about moving to github

I prefer python, so I prefer mercurial ___ NumPy-Discussion mailing list NumPy-Discussion@scipy.org http://mail.scipy.org/mailman/listinfo/numpy-discussion