Thursday, August 14, 2008

Mask sent ... again

Basically a day with redoing the Gemini mask ... first finding stars that are bright enough but not too much, what gets into the range of our science objets ... a bad thing, I don't wanna loose candidates!!

Besides that some discussion on the code for KG project.

Now train home!

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Wednesday, August 13, 2008

The mask is back ... haunting me

So! News of the end of the day, I need to change the alignment stars of the Gemini mask, what means rethinking the whole setup ... it's pulling my feet during the night!

The new version of the last cluster is running, after PSF construction.

The rerun of the failed models is still going.

Organizing the tables to the joint analysis with the velocity fields. Matching objects, checking goodness of fits ...

Studying to my theoretical test for the drivers license on monday, all set, now I need to finish studying. This is happening for a while already, but now is the last rush ...

A very nice lunch with Magda Arnaboldi (ESO) and Ortwin Gerhard (MPE) and a discussion on how can we join our techniques. A proposal is being drafted already for next period.

Basically that, a busy day that ended with nice weather and a good bike ride to take the rust away.

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Monday, August 11, 2008

Mask sent

Mask finished and sent. No issues about shrinking or not. Sent the mask made over the i' image and they have the i' image, so they'll make it work.

WCS matching of a field and a very nice discussion about our nice surprise code, let's call if from now on as KG project.

A lot to do, not enough time ... train was not very productive today.

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Friday, August 08, 2008

Finished?

So, is the mask finished? Almost!

Did everything, Rodrigo Carrasco (Gemini) replied and told me the "secret" that is not so clear in the help page, improved the object selection with help of Iskren Georgiev (AIfA), one of the co-I's, took me the whole day to make things work properly and to finish the mask.

The software doesn't work exactly in real time. You should prepare things first in IRAF, then include somehow info in the header, then find out how to deal with it's automatic way of putting slits ... each step take a while and a lot of "re-doing" ... until I finished the mask.

Great, before sending, let's check in the other image (different filter) to see how it looks like ... and it seems that this other image is a bit "shrunk" ... yes, slits on the right side of the image appear at the right of the objects and at the left side, at the left of the objects ... not much, but enough to look light, something we really need, since the objects are quite faint.

In summary, I asked Rodrigo about it and I'll have to wait for his reply ... of course something would go wrong ...

Meanwhile let's enjoy the olympic games ...

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Thursday, August 07, 2008

Still on masks ...

Yes, the whooooole day on that.

First WCS correction (FORS images are ALWAYS wrong) and it "almost" matched the Gemini images (also WRONG). Since I can't correct the Gemini ones, I had to treat them for small objects photometry, matched the two photometric catalogues, hunted the lost objects, and got a final candidates catalogue. 

Processed it as Gemini suggests (a mixture of codes and programs that the way I don't like) and put it into their mask program (the one that doesn't accept "on the fly" slits, only catalogued ones).

Defined "priorities" AND NOTHING. There's still no way to display the slits on screen!!! Looked at their help page and there was suppose to be a button that says "PLOT SLITS", but it's missing in my version ... either they took it away and didn't update the help page, or it "felt" when I downloaded it ...

Summary: gotta finish that by tomorrow to be processed on time, wanted to have finished that on tuesday, so it was an almost "LOST" week (not the series) and I have other projects to take care ... and they are URGENT!

Mails to some potential saviours (Eduardo Cypriano, experienced Gemini observer, and Rodrigo Carrasco, GMOS-S responsible). Let's see who can help me ...

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Wednesday, August 06, 2008

Masks

Day in between pediatrician and installing the software to do the masks for GMOS and all it's requirements.

After that I could notice how bureaucratic it is, at least the way I'm using it.

Tomorrow I'll try it again, and see if I get less error messages ...

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Tuesday, August 05, 2008

Spectroscopic candidates ...

So, selecting spectroscopic candidates.

We have the Gemini pre-imaging, but also some VLT imaging of this particular group, and I had first to calibrate them and then select the candidates.

Now comes the mask part.

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Friday, August 01, 2008

Pre-imaging

Gathering of yesterday made today a bit of a "slow" day!

Anyway. We've already got the pre-imaging from Gemini, so now express reduction, candidates identification and mask designing to increase the observability of this project.

Also solve one more issue in my cool coding. My C is kind of rusty and old fashioned ... too old fashioned for the needs of this code. So I'm doing a brute-force version of the code in IDL to work on a controlled sample, then I'll port it to C with help of some expert friends.

Probably I just polished the last problem. Now is checking how it looks in C.

To finish the week, today Fernanda and Matheus arrived here and we're gonna spend the weekend in Munich, including a new gathering with the PhD gang :-)

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Monday, July 28, 2008

Gemini Phase II, II - the saga continues

Today I had the keyboard of my macbook replaced. The edge of it start to crack, as usual in macbooks, but warranty is warranty.

Working on the details of the phase II of Gemini. Tomorrow last details and then, phase II of VLT.

Also some coding, a lot of it, in a conceptual mode, to check the logic.

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