Last night was a good session with my 6" f/8 triplet. As usual, I used my 7mm Delite for 173x. The seeing was somewhat better than it has been the last few months, probably 5 to 6 on the Pickering scale, with moments of 7.
STF 1770 m 6.9,8.2 sep 1.8" at PA 128. This is a very nice double to observe. Thought to be a binary.
STF 1795 m 6.9,9.8 sep 7.9" at PA 3. The companion looks fainter than stated, at least to me. Uncertain binary.
STF 1830 m 9.3,10.3, sep 10.6" at PA 312. 1830 is components e,f, of this system which includes STF 1831 m 7.2, 9.6 sep 5.8" at PA 138. There is another star, about mag 7, in between these two pairs, which are separated by 138". I did not observe the 12th and 13th mag components of this seven star system due to bright moonlight relatively nearby. The STF 1830 pair is optical, the close pair (STF 1831) is an uncertain binary, as are c,d. The two brighter stars are presumed a physical, though widely separated, connection.