Focus pyramid

The focus pyramid was re-calibrated for both the HR and the WF camera. Only minor adjustments to previous values were found. The earlier mentioned inconsistencies between manual focusing and the focus pyramid may be related to variations in seeing which makes it hard to determine the correct value manually. It is currently recommended to focus with the pyramid in the Ks band and then use the pre-determined offsets for the other filters. The filter focus offsets were recently re-determined to a high accuracy in very good seeing.