Engineering 2012MayJun

Computer OSes

• May 27: Debian Lenny source packages were moved to archive.debian.org. FB updated the packages to reflect this.

• May 27: aptitude on wolverine found more than 65535 (16bit limit) packages to update, causing a bug. FB updated the apt cache size, then updated the distribution source by source.

• May 27: current status = we have the final versions of all Debian Lenny packages (gcc 4.3.2, python 2.5.2, pygtk 2.12.1, gtk 2.12.12)

• May 28: also upgraded lothlorien to ease work on CHAMP

CHAMP -- hardware

• May 26: Larry started pumping CHAMP

• May 27: vacuum ~ 2e-3

• May 28: vacuum reached 1.0e-3, so not quite ready for pumping.

• May 29: CHAMP cool, pressure ~7e-7

• May 29: Despite attempts to reproduce hardware crashes/freezes from last run, none have happened so far.

CHAMP -- software

• May 28: fixed CVS that had been erased from ctrscrut due to a HDD failure in Jan/Feb. Fixed all memory leaks on spooler and astropci reported by cppcheck, especially realloc issues. Reintroduced star info and uv info to spooler, hopefully compatible with CHARA libraries (tests TBD).

• May 29: worked on spooler code, now fully functional, i.e. star + uv info (though this uses partially the old method). Tried unsuccessfully to reproduce the "negative ftnum bug".

• May 30: cleaned up a lot of the python code and debug of automatic calibration -- would need consecutive spots to fully try.

• May 31: continued Pico automatic calibration and automatic spiral search. Spot detection routine not robust yet but spiral search works on single spot. Made backup of code + added to CVS the new spooler code.

• Jun 1-2 : been working on the aligment GUI, fixed many bugs, see

https://www.astro.lsa.umich.edu/intra/research/monnier/internal/index.php/CHAMP_bugs_to_fix

Final final cophasing of MIRC+CHAMP with CHARA

Work on June 10, 2012 (JDM/XC)

REFS: MIRC IR6 87750, CHAMP IR6 is not adjustable

BEAMS RETRO MIRC CHAMP

5&6 5.720 mm IR5: 55250 IR5: 136685

4&5 5.841 mm

3&4 5.375 mm

2&3 5.940 mm

1&2 5.024 mm

Starting 5:07pm

Prep: Homing RETRO

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BEAM 5-6

MIRC Quality Control checks

Beam 5: 66 cts peak / 732 cts, FWHM 7.6 mu (Fluxes here are xchan / fringe quad)

Beam 6: 51 cts peak / 642 cts, FWHM 7.1 mu

FRINGES (VIS~90%, very little dispersion):

ir5 67750, ir 6 87750, retro 4.723.

Goal: FIX IR6 87750, RETRO 5.720mm, adjust IR5: 55250

CHAMP alignment:

Beam5 image quality is great.

Beam5 R6 comment says "image clean" but actually two spots. I will choose bottom one (top one seems to lead to failure)

Beam6 L6 image looks very elongated... vignetting? ugh.

Looking for fringes... FOUND: champ IR5 136685, RETRO 5.720

Nightly Log

• UT June 8, 2012

got lab fringes on beams 1,2

got sky fringes on beams 1,2 (w1-s2).

mirc found fringes with S2 at 5.8mm, we had to move s2 to 7.1mm, so a change of 1.3mm (hmmmm?)

but we tooks some data 2012Jun08/champ0001-0002 and later background files.