vsnet-alert 7093 Possible Nova in Oph Spectrum : 1/26/02 12:52 UT - lo-res spectra of potential nova in Oph via non-objective slitless spectrometer through thin cloud and prior to approaching dawn. The sky conditions/ relative faintness of object (V=9.2) resulted in a low signal to noise ratio of ~3 for each spectrum. The spectrometer consists of a transmission grating, an 0.2 m SCT + SBIG ST-8 CCD camera - calibrated relative to A type stars. The standard deviation of wavelength measurement is approximately 25 Angstrom. From this measurement, I conclude that the new object in Oph does exhibit H alpha emission. Doug West - Mulvane, KS, USA
vsnet-alert 7101: 2002 1 27; A. Retter, S. O'Toole, University of Sydney; R. Stathakis, J. Pogson, AAO; T. Naylor, Exeter University, report the possible Nova Oph 2002=HadV105 (IAUC 7808) with the 3.9-m AAT telescope (+RGO) in January 26 at 18:30 UT. Prelim analysis of mid-res spectra (400-700nm) shows they are dominated by strong emission lines and possibly weak P-Cygni profiles. The strongest lines are H-alpha, H-beta and Fe II multiplets 42, 74, 48, 49, 55 etc. The FWZI of the H-alpha and H-beta lines is 2350+/-100 km/s. The object is, therefore, very likely a classical nova than belongs to the Fe II class, caught at the early decline phase.
more WPO nova spectra
my spectroscopy
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Haseda
discovery photo Finder
chart Bisei
spectrum
2002 July 14: First decent spectrum
of this nova [see below] now on southern meridian at midnight ~ mag10.5
; mp 9.0 at discovery in January 2002.
2002 June 10: Field image
via 135mm fl lens + MX5c CCD show nova still relatively bright ~mag 10.5.
Bright star 4th mag at top is Xi Ser.
2002 Jan 29: First WPO image
+ spectrum in predawn sky under very poor conditions ie 8o above
SE horizon through cloud and tree branches! No stars visible in finder
field. The tell-tale classic Ha emission line
obvious in a weak spectrum.
