The blue metallic box below the acquisition/guider box contains the filter wheel(s), labelled on the East and West sides. Each wheel has 8 filter positions; position 1 is the reference and position 8 is always empty, so that with two wheels installed, one wheel should always have position 8 in the beam (unless one wheel contains neutral density filters). '''Filters must not be removed from the filter wheels.'''
Throughout 20222023, the filters in the 1-m wheels will be as follows:
{| class="wikitable" border="1"
* Remarks: Any applicable notes, e.g. the RA & Dec zeropoints for the specific coordinates used.
== Current known issues Troubleshooting ==
'''Telescope pointing The table below describes some problems/time server error'''you might encounter. Some can be tackled by the observer (see column 4). If the suggested steps to be followed by an observer fail, please call a technician.
If you encounter telescope pointing problems, check the time and date displayed on the {| class="wikitable" border="1"|-! Symptom! Cause! Solution! Who to call|-| The TCS, as the cause could GUI disappears/won't open| The 40inch_lodestar_source_extract service needs to be the time serverrunning on ioserver1. If | Check if the date/time process is wrongrunning, please call the electronics technician for assistance.if it is reported as "inactive (dead)" then restart it and check again:
'''The ssh io@ioserver1.suth <br>systemctl status 40inch_lodestar_source_extract <br>systemctl start 40inch_lodestar_source_extract <br>systemctl status 40inch_lodestar_source_extract| IT or electronics standby.|-| Telescope pointing problems| There may be a time server error.| Check the time and date displayed on the TCS. If it is incorrect, phone for assistance.| Electronics standby.|-| Dome Shutter obscuring the telescope''' At times, the | The dome does not find its position, and therefore does not follow the telescope correctly. To avoid this, it is always a good idea to point | Point the telescope to Zenithzenith (with dome in auto), or rotate the dome so that it can establish its position by passing through some of the cardinal points.| Observer|}
==Webcam==
