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SN2014J with a 10.6 cm refractor (FSQ106ED Takahashi):



and with a CN212 reflector (D=21 cm) the same night and with the same spectrometer (Alpy 600):



(note visisibility of Ca II - K&K lines)

An image of M82 + SN taken with the FSQ106ED refractor (Bleu, Green and Infrared filtrers - 780 nm):



Infrared filter enhance dust ption regions Here a Halpha version taken the
same night:



Christian

My latest spectrum of SN2014J taken the 2014/02/16.9 with a 106 mm
refractor and Alpy600 spectrograph (19 microns slit, one hour exposure).



Also a small work on this spectrum: it is easy to degrade the original
resolution of Alpy600 spectrograph to a typical resolution of
SA100 spectra (nearly R=140 in the majority of situation probably or lower –
see yellow Na lines depth). Of course, the signal to noise is now very high.
It is a typical information transfert from spectral resolution to radiometric
resolution, possible from Alpy->SA (because Alpy offers a spectral resolution
provision), not from SA->Alpy, unfortunatly.

Christian

Hello,

here my latest spectrum of SN2014J taken with
CN212/alpy/ST7 on Mach1 at SMU Castor.



clear skies

A spectrum taken the 21.8/02/2014 with an Alpy 600 (19 microns slit with, fine seeing) on
a Celestron 11 telescope (6 x 600 sec. exposure):



Christian

A medium resolution (R=2300) of SN214J (C11 + Lhires III 600 g/mm with a 27 microns slit)
Taken in two part (6x600sec each):



Some faint lines are visibles (see also Paolo Berardi 06/02/2014 spectrum) and compare with Alpy/Lisa spectra.

Christian

Here's a spectrum taken with my C14 and eshel spectrograph. The flux was very poor and the spectrum very noisy.

The target near the fiber hole


And the spectrum 9 exposures of 1800s, total of 4h30'



Olivier GARDE

Olivier,


4h30 - wahouh!

Did you send your spectrum so it can be uploaded on ARAS database?
http://www.astrosurf.com/aras/Aras_Data ... 4J_M82.htm


Cordialement,
Olivier Thizy
Vous ne verrez plus des étoiles comme avant !
http://www.shelyak.com/en/

Olivier Thizy wrote:Olivier,
Did you send your spectrum so it can be uploaded on ARAS database?
http://www.astrosurf.com/aras/Aras_Data ... 4J_M82.htm

Yes, I did it .....

Cool Olivier. You spectrum is in good agreament with Christian ALPY spectrum, except for wave lenght beloww 5000A. Who said that eShell was for bright target ... Well, a LISA ou ALPY will perform better, but it's still possible with the eShel.
Regards
Thierry Lemoult