The third flight of the Medium Scale Anisotropy Measurement ( MSAM1 ) , in June 1995 , observed a new strip of sky , doubling the sky coverage of the original MSAM1 dataset .
MSAM1 observes with a 0 \fdg 5 beam size in four bands from 5–20 { cm } ^ { -1 } .
From these four bands we derive measurements of cosmic microwave background radiation ( CMBR ) anisotropy and interstellar dust emission .
Our measurement of dust emission correlates well with the 100 \micron IRAS Sky Survey Atlas ; from this comparison we determine an effective emissivity spectral index between 100 \micron and 444 \micron of 1.46 \pm 0.28 .
Analysis of our measurement of CMBR anisotropy shows that for Gaussian-shaped correlation functions with \theta _ { c } = 0 \fdg 3 , we place a limit on total rms anisotropy of 2.2 \times 10 ^ { -5 } < \Delta T / T < 3.9 \times 10 ^ { -5 } ( 90 % confidence interval , including calibration error ) .
The band-power limits are \langle \delta T \rangle \equiv \langle l ( l + 1 ) C _ { l } / 2 \pi \rangle ^ { 1 / 2 } = 50 ^ { +16 } _ { -1 % 1 } \hbox { $ \mu$K } at l = 160 , and \langle \delta T \rangle = 65 ^ { +18 } _ { -13 } \hbox { $ \mu$K } at l = 270 ( 1 \sigma limits , including calibration error ) .
The corresponding limits with statistical errors only are \langle \delta T \rangle = 50 ^ { +13 } _ { -9 } \hbox { $ \mu$K } and \langle \delta T \rangle = 65 ^ { +14 } _ { -10 } \hbox { $ \mu$K } respectively .
These measurements are consistent with a standard adiabatic cold dark matter model ; we discuss constraints on h , n , and the redshift of reionization .