(IAAC) Obj: 3C 273 - Inst: 150 mm reflector

Observation Poster: Emil Neata <forvert2000@yahoo.com>
Observer: Emil Neata
Your skills: Advanced (many years)
Date/time of observation: january 12 2005
Location of site: Cipuercenii Noi (Lat , Elev )
Site classification: Rural
Sky darkness: 6.2 <Limiting magnitude>
Seeing: 7 <1-10 Seeing Scale (10 best)>
Moon presence: None - moon not in sky
Instrument: 150 mm reflector
Magnification: 70x
Object(s): 3C 273
Category: Quasar or lens.
Constellation: Oph
Data: mag   size 
Position: RA :  DEC :
3C 273 is the only quasar visible through a 150mm telescope. It is located in the Virgo-Coma cluster, south of M 61. The distance that separates Earth from 3C 273 is 2.6 billion light-years (redshift 0.158). Finding the quasar can prove quite difficult, it is located in an area deprived of bright stars and it took me almost 15 minutes to find it. I used a map from RASC Observer's Handbook.
When I observed 3C 273 its magnitude was 12.5 (it varies between 12 and 13). Seen through the telescope you can't distinguish it from a star.
Optional related URLs: http://www.astroclubul.org/emilneata
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