We successfully obtained polarized intensity (pB), polarization angle (pA), and degree of polarization (pD) of the solar corona after stacking five images per polarization. Using the ratio of the polarized intensity at 402.5 nm and 393.4 nm, we constructed a temperature map of the corona. The temperature distribution is consistent with known trends for the eastern limb. Temperatures are higher at the streamer and lower at the boundaries between the streamer and the cool polar corona hole. We observe several structures with consistent shapes along the thread of the streamer. The western limb and southern region display dubious temperatures, probably due to the contamination by light scattering from prominences.

(a) Polarized brightness at 402.5 nm by DICE, (b) at 393.4 nm by DICE, and (c) at 735 nm by K-Cor. (d) Total brightness (tB), (e) degree of linear polarization (pD), and (f) linear polarization angle (pA) at 402.5 nm. The DICE images were obtained between 17:36:33 UT and 17:36:36 UT, the K-Cor 735.0 nm image was obtained at 18:01:52 UT on 21 August 2017. The DICE pB and tB are derived from stacks of five images. We mask the region where the dynamic range of the 402.5 nm pB image is lower than 10,000. The white arrows in panel (b) indicate stray light by prominences.