Waid Observatory

Object: Quasars around NGC 3842
Date: Feb. 7-9, 2018    -    Location: Davis Mountains west of Fort Davis, Texas
Telescope: Stellarvue SV102ED  -  Camera: ST-8300M    Filters:   Astrodon Luminance
Exposure: Luminance = 17 X 15 min.  -  Binning 1 X 1
NGC 3842

Abell 1367 - Quasars 1

Quasar 1 QSO B1141+2013
z2 = .3357 - radial velocity3 = 84,432 km/s - light-travel time4 = 3.635 billion years

Quasar 2 QSO B1141+202
z2 = .95411 - radial velocity3 = 175,360 km/s - light-travel time4 = 7.31 billion years

Quasar 3 [VV96] J114485.3+195603
z2 = 2.2 - radial velocity3 = 246,499 km/s - light-travel time4 = 10.217 billion years

1 SAO/NASA Astrophysics Data System (ADS)

2 z = spectroscopic redshift

3 radial velocity = The recession speed due to the expansion of the universe.

4 light travel time = The time for light to travel from the quasar to the Earth.

 
Copyright Donald P. Waid