(IAAC) Obj: M 5 (NGC 5904) - Inst: Brennweite 12.5, F/4.1 dobsonian (homemade)

[anonymous at sedna.atmob.org]

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Observation Poster: Steven H. Yaskell <steven.yaskell at wtnord.net>

Observer: Steven H. Yaskell
Your skills: Advanced (many years)
Date/time of observation: April 12, 2007, 2205 UT/GMT
Location of site: Stockholm, Sweden (Lat 59:33, Elev 61m/200ft)
Site classification: Suburban
Sky darkness: 3 <Bortle Scale (9 worst)>
Seeing: 7-8? <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: Brennweite 12.5, F/4.1 dobsonian (homemade)
Magnification: x 47, x76, x 152 + Power Corrections all Brennweite 12.5 observations
Filter(s): Deep Sky
Object(s): M 5 (NGC 5904)
Category: Globular cluster.
Class: V, compact
Constellation: Sepens
Data: mag c. 6  size >10'
Position: RA 15:16  DEC 2:16
Description:
c. 6 mag star orients this object to S to my view and they fit fine 
together in one ocular at x47. Quite luminous indeed but a hard-to-find
object in light polluted skies w/ big cities facing S (like Stockholm.

At x76 start to get hint of outliers. Deep Sky is no help.

At x152 numerous outliers start to appear and one to the E of it in particular.
Start to see lanes and sandy texture esp. with averted vision. I also start to
see that peculiar distention in the mass, to my view spreading N.

Also want to correct all my BRENNWEITE powers to now. I left the old powers 
for my Bresser 4.8 " in my profile and neglected to calculate for the new focal
length (which is 1905mm...a considerable difference compared to my 4.8!).
 
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