[Prev][Next][Index][Thread][Search][Objects]

(IAAC) Obj: M5 - Inst: 3.5" (9cm) refractor, f/11, ecuatorial



----

Observation Poster: Tudorica Alexandru <tudorica_a@yahoo.com>

Observer: Tudorica Alexandru
Your skills: Intermediate (some years)
Date/time of observation: 15.06.2004 - 21:00 UT
Location of site: Ghirdoveni, Romania (Lat +45 , Elev 260m)
Site classification: Rural
Sky darkness: +6.9 <Limiting magnitude>
Seeing: 8 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 3.5" (9cm) refractor, f/11, ecuatorial
Magnification: 38X, 76X, 110X
Filter(s): none
Object(s): M5
Category: Globular cluster.
Class: 
Constellation: Ser
Data: mag 5.6  size 23'
Position: RA 15h :18'  DEC +02 deg:05
Description:
Very bright globular cluster, well resolved at 38X, some stars are also seen, 
from which one is at 3' from the nucleus, faint, and another one is at 20' from 
the globular, bright, and double, the separation between the compenents being 
about 4", and the magnitude difference between the about 4.5 magnitudes.(it is 
at SSE)At 76X the cluster looks much more impressive, more stars are resolved, 
transforming into a blanket of stars that cover a bright patch of diffuse light
 (maybe from the space cold:)). The halo looks asymetric, being more bright 
at the N side of it; a kind oir curved arm made of faint stars is visible; also 
a dark nebula that seems to cut it from the cluster, the dark nebula has the 
same form as the arm. At 110X the cluster seems even more impressive, much more 
stars being visible.With every increase in power the cluster looks more 
beautifoul. At this power it is seen that the star that is 3' from the
nucleus, it isn't a star, it is a string of four stars, very close one
to eachother. The cluster looks violet - blue.
--
Optional related URLs: 
** This observing log automatically submitted via the Web from:
  http://www.visualdeepsky.org/enter-log.html