Since its re-deployment at El Leoncito in February 2006, the Argentine airglow spectrometer has completed six more years of remarkably successful data acquisition. The instrument presently looks like this (status: 2 Dec 2011).
Since September 15, 2009, we can now access the latest data each day, via the internet. However, processing and uploading to WDC/DLR is normally done on a weekly schedule.

1. Elastic adhesive coupling in micrometer head drive broken
2. Filter tilt unit axis block glue broken
3. Binary port input from upper tilt limit sensor dead
4. Freon escapes from solder leaks in evaporator part of detector cooling system
5. Supply line to last PM dynode open contact (only capacitive voltage division active)

1. Mechanical problem of filter tilt mechanism was caused by electronic failure.
2. Input port failure has been repaired.
3. The two broken couplings in tilting filter drive were repaired.
4. Inspection of the micrometer screw and contact steel ball showed very little wear.
5. Traces of wear on the micrometer head tip were retouched / steel ball replaced.
6. DIN connectors were replaced by rugged MIL STD versions; cabling layout improved.
7. Filter tilt, pulse amplification, and counting systems again fully operational.
8. 16 MHz 286/7 motherboard replaced by 20 MHz 386/7.
9. Replacement of hard disk after partial failure, with complete recovery of contents and directory structure.
10. Failed input port on controller card repaired by installing additional 74LS244 IC (with some spare ports).
11. Installation of stepping motor control unit directly in distribution box, eliminating several cables/connectors.
12. Detection and repair of freon leak in evaporator (union of entrance capillary and evap coil).
13. Detection and repair of second (principal) freon leak in capillary; resoldered with copper sleeve.
14. Successful cooling test performed.
15. Long bolts put on bottom plate as stands for handling in lab.
16. Mechanical support added to high voltage supply resistor in preamp chamber.
17. Replacement photomultiplier installed, optical alignment checked.
18. Photomultiplier dark count checked and found very low.
19. Neon spectra taken to check spectral scan range.
20. Instrument spectral calibration complete.
21. New wavelength calibration included in control software.
22. Last dynode contact problem repaired.
23. Instrument transported to site
24. El Leoncito instrument setup and performance check campaign, Feb 3 - 7, 2006
25. A simple daylight sensor (sky-looking photoresistor connected to the PC printer port) avoids daytime measurement in case of instrument clock failure (also for monitoring RTC drift, weather conditions, etc.)
26. The internet server for data access (since September 2009) is now used for RTC time correction.