000822
Tohmura, Kawakami, Shinoda

NHK observations


1.HeI10830 scan dark filament near W-limb

GA=17.284 (10830 2nd)
filter: RM90
f=73, lamda=326
slit=80micron, exp=5sec
step=2"
no binning

df1_000-099 07h24m-08h41m telescope drift
df2_000-064 08h46m-09h05m exp.time short
df3_000-099 09h10m-10h39m pause at 065, 96th incomplete

flat: dfflat1 with diffuser exp=60sec
      dfflat2 slot,ND03+40  exp=5sec
dark: dfdark1 exp=60sec
      dfdark2 exp=5sec