The sph is large, and conspicuous in B. M sirenum looks split because of cloud, but the images are not stable and so not sure.
Use is made of an f /7.7 Newtonian extended to f /50 having a 25 cm speculum equipped with an ST-5C (at -5ﾟC).
Image data are
15 IR images each exposed with 0.1 secs
15 R + IR Rejection images each with 0.2 secs
10 G + IR Rejection images each with 0.3 secs
20 B + IR Rejection images each with 0.5 secs
Filters: Koh-Ei-Sha's interference RGB filter of Type 3.
Observing site is located at Hatsuka-ichi, Hiroshima, Japan.