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(IAAC) OBJECT: M5 (globular) INST: 16" Dobnewt f/4.59, SKY: Suburban LM 5.1
Observer: Todd Gross
Your skill: Intermediate
Date and UT of observation: 02/07/98 10:00 GMT
Location & latitude: 22 miles west of Boston, Ma. 42.3N
Site classification: Suburban
Limiting magnitude (visual): 5.1 zenith estimated 4.7 near object
Seeing (1 to 10 - worst-best): 6
Moon up (phase?): No
Weather: Clear, snowcovered, scattered cirrus clouds
Instrument: 16" Newtonian-dob w. 96/99% coatings f/4.59 f.l. 1865
Magnifications: 169,267x Televue binovue
Filters used: none
Object: M5
Constellation: Ser
Object data: Globular cluster
Size(s): 17.4 arc min.
Position: RA 15:19 DEC +2:05
Magnitudes: 5.7
Personal "rating" (at this aperture, and sky condition): A+
Astounding! One of the best objects, if not THE best, viewed in
this sky, in this scope. Only used the binoviewer. Better than M13
because of the varied magnitude of the stars. Resolved to "above"
the dense, brilliant, intense (and lumpy) core. The brighter members in
the binoviewer truly seemed to leap out towards me in a false 3-D
effect, appearing closer than the weaker members. Object was
quite large and overwhelming.
Best magnification was at 169x, taking in the whole nebula and some of
it's surroundings, and yet resolving it fully. Even more resolution was noted
at the core at 267x, but it lost a tad of it's 3-D appearance closer in
like that.
Globular was symetrical and round. Truly more impressive than any 2-D
photograph, a different, more overwhelming feeling of awe through the scope!
- Todd
_________________________________
BOSTON TV METEOROLOGIST TODD GROSS
Weather/Astronomy Home Page: http://www.weatherman.com
Administrator, NE Weather Watcher Mail List, wxobs-sne@shore.net
Originator of the NE.WEATHER newsgroup
_________________________________
Email: toddg@weatherman.com Work Phone# (617)725-0777