Statistics of DIMM, OAO, NAOJ from 2005 to 2007

[2009.03.09]

Here I show some statistics of measurements by the OAO DIMM (Diiferential Image Motion Monitor) from year 2005 to 2007.

Notes

• There were two DIMMs running. The first one (DIMM1) was installed in the small enclosure close to the 91 cm telescope dome. The other one (DIMM2) was installed on the east side of the observatory, several hundred metres away from the 188cm and 91cm telescopes. The operations were basically made with DIMM1, but sometimes when DIMM1 enclosure was in trouble, DIMM2 was used.
• Measured Fried parameters were converted to FWHM values of a point source in optical wavelength, observed at zenith.
• Median, standard deviation and peak values were derived with 3-σ clipping.
• Sometimes there are only a few (or even one) observing nights due to weather condition and troubles in instruments in one month. Please refer "monthly statistics" text files.

2005

• 2005/01-06(PDF)
• 2005/07-12(PDF)
• Monthly Statistics 2005(TXT)

2006

• 2006/01-06(PDF)
• 2006/07-12(PDF)
• Monthly Statistics 2006(TXT)

2007

• 2007/01-06(PDF)
• 2007/07-12(PDF)
• Monthly Statistics 2007(TXT)

Monthly Median and Peak Values