Observing Report
MAESTRO Engineering run
July 25-29, 2007
From: Jill Bechtold
Executive
Summary
We have had a very successful run, far exceeding my expectations.
Highlights include:
1. Safe transport from Steward Observatory to the MMT loading
dock, with no thermal stress to the CaFl lens.
2. Safe transfer of the instrument from the loading dock to the
chamber, through the hatch.
3. Mounting of the instrument and counterweights on the
telescope.
4. Balance testing and adjustment, so that we can rotate the
spectrograph and tip the telescope.
5. Cabling of spectrograph electronics, Th-Ar power supply, CCD
electronics and dry nitrogen purge.
6. Successful installation on alewife computer of (1) ruby code
to run spectrograph stepper motors and lamps, and
(2) IRAF/ICE to control CCD.
7. Focus of Th-Ar spectrum on CCD, with FWHM = 2.0 pixels in both
spectral and spatial directions with a .3 arcsec slit.
Negligible astigmatism.
8. Focus of guide camera on slit plate, and control of the guide
camera on the hoseclamp computer with Lesser/
Schmidt gui.
9. Extensive flexure tests using the Th-Ar lamp in the f/5
topbox. Mechanical flexure is less than expected, and will be
easily controlled.
10. Generation of documentation of proceedures.
So far, we haven't been able to open the dome because of fog and
rain. (Saturday, July 28, 2007)