<!--== Commissioning Aids ==
== SHOC on Lesedi vs. other SAAO telescopes ==
If you notice any funny effects with the SHOC interface running in Chrome (e.g. image not displaying, red lines being deposited in the plot area by the cursor), '''run SHOC from Firefox''' and these should be resolved.
SAAO has two Andor cameras, interchangeably referred to as SHOC. The one largely dedicated to Lesedi is "shocndisbelief" ("shocnawe" is usually on the 1.9- & 1.0-m). Shocndisbelief has a roving bias issue in the 1MHz mode (a differential count level occurs, the number of rows affected varying with time) so it is recommended to operate in 3MHz readout. SHOC's field of view is larger on Lesedi than on the other telescopes (5.7x5.7 arcmin<sup>2</sup>), with a platescale of 0.33"/pixel, so the appropriate binning is usually 1x1 or 2x2.
On the Advanced tab of the SHOC control browser, set both "Flip X Axis" and "Flip Y Axis" to OFF to set SHOC's image display to North up and East to the left on Lesedi.
The login for SHOC on Lesedi is given in the Lesedi User Resources google doc.
=== Filters ===
At present, SHOC has one 8-position filter wheel, containing UBVRI, a clear filter to match the focus of the Bessell filters, and two empty slots. The SHOC software identifies the filter in each position. '''Filters must not be removed from the filter wheel.'''
=== Data ===
To retrieve your data from the SHOC PC during your run, use this command from the PC on which you which to view the images:
rsync -avzP shoc1m@shoc1m.suth.saao.ac.za:/data/lesedi/shd/YYYY/MMDD/SHD_YYYYMMDD.nnnn.fits .
where YYYY is the year, MMDD the month and day, and nnnn the file number.
=== Centre of rotation on SHOC ===