Seeing: 4-5/10. Transparency: 2/5
The depression of the spc's top is evident and the evening side looks slightly less bright. Chryse is (slightly whitish) light as well as Ophir-Candor, while the following area of Solis L is not light. Nilokeras and Lunae L are as usual.
By the use of a 32 cm Newtonian @ f25 (extended by Or 25mm eyepiece) equipped with Bitran's cooled ccd camera BJ-41L (Sony ICX 285AL).
Image data are
Top row (ω=045°W)
25 IR (820nm) images each exposed with 0.5 secs
10 R images each with 0.2 secs
10 G images each with 0.3 secs
15 B images each with 1.0 secs
25 L images each with 0.08 secs
Bottom row (ω=055°W)
25 IR (820nm) images each exposed with 0.8 secs
16 R images each with 0.3 secs
14 G images each with 0.4 secs
16 B images each with 1.5 secs
21 L images each with 0.1 secs
Filters used: IDAS interference RGB filters of Type 2.
The Akutsu Observatory is located at Karasuyama, Tochigi, Japan.