cosmology needs you!

[Lerner]

Volunteer wanted to help with cosmology research. I and my colleagues are continuing research on the surface brightness of galaxies, which is a key test of the expansion of the universe. But, due to other commitments on their time, we need help with some tasks. We need a computer-savvy volunteer to down load and do some preliminary processing of images of a couple of hundred galaxies from the GALEX NUV catalog. No astronomical experience is required, just computer skills. The volunteer’s work will be acknowledged in any paper that emerges from the research and we’ll share early results with the volunteer.

If interested, please contact Eric Lerner at elerner@igc.org.

[Aeronaut]

Just emailed you from my emc account.

[tcg]

Count me in. I have am a fair hand with a computer and I am also an amateur astronomer and astrophotographer.

[Breakable]

I will send an email as well.

[pluto]

G’day

Count me in

[Breakable]

It would be nice to get a sample image for analysis,
then we could to decide upon the analysis algorithm,
agree on output format,
implement multiple detection/analysis programs during the weekend,
and then compare the results, so they would be more reliable.

[Breakable]

Sorry, but I could not wait and made a prototype for analysis. I hope this helps to clear up some misunderstanding:
1)What formula to use for brightness calculation. I used RGB average.
2)How to detect galaxies. I do remove of dark space, and take clustered pixels as galaxies
3)What kind of output. Tab separated? What kind of parameters?
4)Need batch processing?
5)Maximum size of images?
6)Memory constrains?
It might be slow, inefficient, and ugly, but should work.
Source included (not commented).

Usage:Extract Debug.zip, and run GalaxyAnalysis.exe

Attached files

Debug.zip (33 B)  GalaxyAnalysis.zip (20 B) 

[Lerner]

Hey breakable, I’m busy during the week making FF-1 go. Just be patient. We actually have all the algorithms we need. Problem is it just takes time to download the right galaxies. So ,at the moment we don’t need programming. But you will get to look at really far-out images of galaxies.

[pluto]

G’day

How old do you need to me to become an OLD Timer?

[Breakable]

Again sorry for my impatience

[Aeronaut]

pluto wrote: G’day

How old do you need to me to become an OLD Timer?

Any age you please, Pluto. It’s strictly how many posts you’ve made.

[Brian H]

Aeronaut wrote:

G’day

How old do you need to me to become an OLD Timer?

Any age you please, Pluto. It’s strictly how many posts you’ve made.
Eventually you croak.

[pluto]

G’day

Well, well, well and a frog will follow.

So that makes me an old timer with moving parts.

[Rezwan]

pluto wrote: G’day

Well, well, well and a frog will follow.

So that makes me an old timer with moving parts.

Congratulations! And I love the frog expression. I shall adopt it for appropriate occasions.

[Brian H]

Rezwan wrote:

G’day

Well, well, well and a frog will follow.

So that makes me an old timer with moving parts.

Congratulations! And I love the frog expression. I shall adopt it for appropriate occasions.
Careful! Croaking can be fatal.

[Author]

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