(IAAC) IC1396 & Trumpler 37 - Inst: 7" f/15 Maks-Cas, 80mm f/3.2 finder
Observer: Randy Moench
Your skill: Intermediate
Date and UT of observation: 12/26/97 19:30 MST; 12/27/97 02:30 UTC
Location & latitude: Poudre Park, Colorado, 40d 41'
Site classification: Rural
Limiting magnitude (visual): 5.9
Seeing (1 to 5 - best to worst): 4
Moon up (phase?): No
Instrument: 7 inch f/15 Maksutov-Cassegrain with 80 mm f/3.2 finder.
Magnification: 83, 109, 148, 193.
Filters used: Orion Skyglow, Lumicon UHC and OIII.
Object: IC1396 and Trumpler 37
Category: Open cluster with nebulosity.
Object data: Mag: 3.5, Size: 154.0'x140.0', Number of stars: 50, Mag. of
brightest star: 3.8 F,eL neby,incl. Struve 2816.
RA/DE: RA: 21h 39m 6s Dec: +57° 47' 00"
Description: A beautiful triple star association marks the center of my 52'
field of view. The brightest star in the association appears to be SAO33626
according to my skycharting software - SkyMap. To my eyes the brightest
appears to be then "center" star of the three having the most "yellow"
appearance. Each star in the triplet offers a different color making it a
real gem. The cluster is designated Trumpler 37 in the heart of IC1396.
Other notable doubles lie in the 31' field of my 18-mm eyepiece. Above
(east?) of the triple lies a pair with quite unequal magnitudes. The
companion was best seen with averted vision, becoming more apparent at 193
times with my 13.8-mm eyepiece. Another faint pairing lies below and right
(SW?) of the bright triple.
No nebulosity was detected in either the widefield 80-mm refractor or the
7-inch Maksutov using Skyview, UHC or OIII filters.
Conspicuous in the 5-degree field of the 80-mm finder was mu Cephei,
magnitude 4. A very yellow/red star. Probably the reddest I've seen to
Northern Colorado Astronomical Society