Dust in the APO 3.5m Enclosure

 Time series of particle counts.

 Time series of particle counts.

These are the first results from the Apache Point 3.5m telescope enclosure. The stippled areas indicate when the enclosure was open according to the APO observing logs. Each night shows a different behavior. The weather log indicates that on the night of 3/8 the sky was clear with variable winds mainly from WNW to N. On 3/9 the sky was mostly clear, with light winds mainly from the north. On 3/10 the sky was cloudy until midnight and clear afterwards, with variable winds mainly from the west. The lowest dust levels in these plots are similar to those from the microphotometer room (with the electrostatic dust filter off).


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Last updated March 13, 1996.