(IAAC) OBJECT: NGC2264 (Xmas tree cluster) INST: 16" f/4.59 NEWT
Observer: Todd Gross
Your skill: Intermediate
Date and UT of observation: 12/16/97 08:10GMT
Location & latitude: 22 miles west of Boston, Ma. 42.3N
Site classification: Suburban
Limiting magnitude (visual): 4 (estimated) 4 (est) in vicinity of object
Seeing (1 to 10 - worst-best): 3-4
Moon up (phase?): Yes, 85%
Instrument: 16" Newtonian-dob w. 96/99% coatings f/4.59 f.l. 1865
Magnifications: 69x (27 Panoptic)
Filters used: none
Object: NGC2264, Christmas Tree cluster
Object data: Open cluster
Size(s): About 65 arc min.
Position: RA 6:41 DEC +9:53
Personal "rating" (at this aperture, and sky condition): C+
The Christmas tree cluster was a large loose cluster at this
magnification. Looking like an upside down triangle (inverted)
with another line of stars running parallel alongside the triangle.
Took up the entire fov in a 27mm panoptic.
Near the apex (but not quite the top) of the triangle was a much
brighter member of the cluster, giving the appearance of an upside
down Christmas tree, but I think lower magnification would have
brought this out more.