Archive for the ‘Novae’ Category

Nova Centauri 2017 Spectrum

Posted by Paulo Cacella on 24th May 2017 in Novae, Novae, Recent Posts, Spectroscopy

Comparison with spectrum of ARAS group on 19 may 17 and mine (BLUE) on 24 May 17.

NOVA DEL 2013 DSS Spectrum

Posted by Paulo Cacella on 31st August 2013 in Nova, Novae, Recent Posts, Spectroscopy
This is a spectrum of nova DEL 2013 on 31 AUG
The first image is the full spectrum with HAlpha peak, and the second is a zoomed image in Y. The third is IR region and the fourth the UV region.
nova del 2013crop
  /nova del 2013crop 2
  nova del 2013crop IR
  nova del 2013cropuv

NOVA DEL 2013 High Resolution Spectrum

Posted by Paulo Cacella on 24th August 2013 in Nova, Novae, Recent Posts, Spectroscopy
This is NOVA DEL 2013 calibrated against ALTAIR on 25 AUG / / / /Normalized and smoothed / / / /nova del dia 25 / / / /This is NOVA DEL 2013 calibrated against ALTAIR on 24 AUG / / / /Normalized and smoothed / / / /nova del norm / / / /Smooth / / / /nova del ii_2 / / / /No smooth / / / /nova del ii / / / /Here we have a combination of Altair, P CYG and Nova DEl 2013 in the H Gamma area. Calibration was only 2 lines and images are backwards / / / /tot. / / / /Below separated. / / / /ndel final crop / / / /p cyg final crop / / / /altair

NOVA DELPHINUS 2013

Posted by Paulo Cacella on 14th August 2013 in Nova, Novae, Recent Posts, Spectroscopy
Spectrum Obtained at 2013-08-17T01:32:34.000′ GMT with 120sec exposure DSS7 resolution 5A per pixel, ST8, SCT10 / / / /Expansion at H-Alpha measured to 1336 km/s / / / /nova del / / / / / /Below is Nova Delphinus Spectrum obtained at 2013-08-15T00:05:28.000′ GMT. Telescope was a 10 in SCT, DSS spectrograph and ST8 NABG CCD. Exposure 60 seconds. / / / /Expansion at H-Alpha measured to 1699 km/s / / / /Beautiful P Cygni lines in Balmer Series. / / / / / /novadel2 / / / /Image LRGB 1 minute exposure, 14 in SCT on a Chronosmount HPO. Scale 0.62 arcsec;pixel 3000mm FL, ST8. / / / /Astrometry 20h 23 m 30.69 sec + 20 46 03.5 USNOA2 / / / /NOVADELP2013

V603AQL – Nova 1918 – Spectrum

Posted by Paulo Cacella on 5th September 2010 in Nova, Novae, Spectroscopy, Stars
This is the famous 1918 nova in aquila. We obtained the photometry and the spectrum of this object using a C14-G11-DSS7 . The object was measured at 11.640 mag. Image was obtained with FL 2990mm 1.24arcsec/pixel binned by software. / / / / / / / /  / / / / 

Dwarf Nova spectrum

Posted by Paulo Cacella on 5th September 2010 in Novae, Spectroscopy, Stars
Yesterday astroalert sent an alert at http://www.skyalert.org/events/15318/ showing a possible nova like object. We got a 3000s(50 min) exposure (C14-G11-DSSS7) on this 14.3 mag object and got a noisy but interesting spectrum (5.4A/pixel) that resembles and shows several characteristics of a planetary nebula.  With a bit more observation we are now certain that the spectrum is not usable and it is basically an error in sky subtraction data as can be evidenced by the sodium line. / / / /Below the message on VSNET / / / />> From: Patrick Wils <patrickwils@yahoo.com> / / / />> Subject: [cvnet-outburst] Mount Lemmon CRTS Transient / / / />> / / / />> The Mount Lemmon CRTS survey found a relatively bright transient at / / / />> mag 14.3, position 23 44 40.54 -00 12 05.8.  It is mag 21 in its faint / / / />> state according to SDSS, 20-20.5 according to CRTS.  This is very / / / />> likely a previously unknown dwarf nova.  Details can be found here: / / / />> <http://www.skyalert.org/events/15318/>. / / / />> Patrick / / / / / / / /Here a less noisy median applied on raw image to remove artifacts / / / /