Archive for the ‘Quasars, GRB’ Category

Quasar PKS2000-330 in Sagittarius

Posted by Paulo Cacella on 8th February 2016 in Images, Quasars, GRB, Recent Posts, Universe

pks2000330Technical card

Imaging telescope or lens: TPO 10″ f/8 Ritchey–Chrétien Truss
Imaging camera: Orion Parsec 8300
Mount: Losmandy G11
Guiding camera: QHYCCD QHY5L-II Color
Focal reducer: TPO 0.75X
Filter: Baader Planetarium R,G,B 36mm

Resolution: 2504×3326
Dates: June 14, 2015
Frames: 5×300″
Avg. Moon age: 26.83 days
Avg. Moon phase: 8.05%
RA center: 300.900 degrees
DEC center: -32.838 degrees
Pixel scale: 0.759 arcsec/pixel


It is marked with an arrow at the image. PKS 2000-330 (also known as QSO B2000-330) is a quasar located in the constellation Sagittarius. When identified in 1982, it was the most distant and most luminous object known. The “distance” of a far away galaxy depends on what distance measurement you use. With a redshift of 3.77,[2] light from this active galaxy is estimated to have taken around 11.7 billion years to reach us.[2] But since this galaxy is receding from Earth at an estimated rate of 274,681 km/s[1] (the speed of light is 299,792 km/s), the present (co-moving) distance to this galaxy is estimated to be around 22.7 billion light-years (6947 Mpc)

Quasar 3C48 in Triangulum

Posted by Paulo Cacella on 13th October 2013 in Quasars, GRB, Recent Posts
This is a 10×1 minutes exposure in a C14 and a ST8NABG of the first quasar discovered. It shines at around 16th magnitude.