"HS 1700+6416" - Quasar
The constellation Draco is very rich in distant quasars and so it is not surprising that also the QSO "HS 1700+6416" can be found here. The light travel
time is 11.43 billion years and the redshift is z=2.72. Some very remarkable values! If you calculate the "Comoving Radial Distance", you get a current
distance of 20.3 billion light years. Every second the quasar moves another 260,000 kilometers away from us.
The absolute magnitude is given as M= -30.8mag. This corresponds to 180 trillion times the luminosity of the sun. Even in a distance of 200 light years
"HS 1700+6433" would still shine as bright as our sun in the daytime sky. Hardly to imagine!
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Due to some bright field stars the position of the quasar can be fixed quite easy with averted vision. And so in my 20" Dobsonian at a magnification of
V=270x it flashed out of the darkness every now and then for a short time and was well visible in these moments.
Nevertheless I would estimate the brightness of the QSO with 16.5mag. So it needs at least 16" aperture to hunt for "HS 1700+6416" with good chances of success.
