Cooling

The long hoses for the PTR have arrived. Priority was given to work on the dome cooling this summer. When the long hoses are installed, NOTCam will be running with the PTR also when mounted on the telescope. This should keep the detector at a more stable temperature and limit bias drifts. A preliminary solution has been found to limit spilling of LN2 during night time. It is however, still recommended not to point much below airmass $\sim$ 2.