Two fun little clusters in Cygnus are NGC 6910 and M29. Both are small little knots of stars that do not stand out from the Milky Way in low power wide field views. Even so with higher magnification they provide us nice views of small open clusters. Do you see the Rocking Horse or the Cooling Tower? Clue: the Rocking Horse is upside down and the Cooling Tower is on its side. Note that the Trumpler Class is how I would rate it in a five-inch Mak Cass telescope. This classification seems to vary with the size of telescope used to derive it. In other words, If someone were to determine the Trumpler Classification with a much larger telescope, you may come up with a different classification due to more stars being visible.
buddybarbee 