RS Oph Nova (KiwiAstro)

Celestial hemisphere: Southern · Constellation: Ophiuchus (Oph)

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RS Oph Nova

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RS Oph Nova

Read about this 'recurring nova' a couple of days ago and with a clear night last night, gave it a go to see what could be picked up at 300ms exposure with the mono cam.

Every 20 years or so, a thermonuclear explosion occurs on the surface of RS Oph, a white dwarf in the constellation Ophiuchus. On Aug. 8th, the brightness of the tiny star increased 600-fold, from magnitude +12 to +5.This is called a “recurrent nova,” and it is rare.RS Oph is a binary star–a very lopsided one. On one side is a white dwarf, on the other is a red giant. There’s very little distance between the two, so the gravity of the white dwarf is able to pull gaseous material off the larger star down onto itself. Every couple of decades, enough matter accumulates to trigger an explosion. The last time this happened was back in 2006.At 5th magnitude, the current outburst is visible to the unaided eye - binoculars or a telescope will allow you to see it with ease.

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Status	Advanced success
Started	...
Astrometry.net job	4868556
PixInsight job	B4FA7405ZK8EET9FCAD7Y4WDLLKU7YJL
PixInsight queue size	n/a
PixInsight stage	n/a

RA (center)	17h50m16s.37
RA (top/left)	17h54m33s.83
RA (top/right)	17h48m24s.95
RA (bottom/right)	17h45m58s.53
RA (bottom/left)	17h52m08s.27

Dec (center)	-06°42′16″.1
Dec (top/left)	-06°34′25″.2
Dec (top/right)	-05°44′06″.7
Dec (bottom/right)	-06°50′00″.0
Dec (bottom/left)	-07°40′24″.8

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