Comète C/2014 Q2 (Lovejoy) hauteur 18° !

[Dubreuil Pierre]

Bonsoir à tous

La nuit dernière, je ai ouvert mon nouvel observatoire et faire mes premiers spectres (ça change la vie!)

Il faisait une température proche de 0 ° C et clair ciel avec un premier quartier de lune.
Je ai réalisé un premier spectre pour la base Bess de l'étoile BD + 59 2829.
Ensuite la comète C / 2014 Q2 (Lovejoy) très bas sur l'horizon (18 ° maximum), mais assez lumineux pour guider le noyau. Alpy600 et C8

Joyeux Noël et bonne année à tous

Peter

C-2014 Q2 20141229.914 Pierre Dubreuil.png (5.64 KiB) Viewed 10288 times

Good evening everyone

Last night I opened my new observatory and make my first spectra (changes life!)

It was a temperature close to 0 ° C and clear skies with a first quarter moon.
I realized a first spectrum for Bess basis of BD + 59 2829 star.
Then the comet C / 2014 Q2 (Lovejoy) very low on the horizon (18 ° maximum), but bright enough to guide the core. Alpy600 and C8

Merry Christmas and Happy New Year to all

Peter
L'image au chercheur (DMK41 et 135mm bin2)

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[Paolo Berardi]

Congratulations Pierre! For the time being I cannot observe this beautiful comet due to obstacles above horizon but Umberto was able to take a spectrum on 29 december from L'Aquila, Italy. He would write here but he is waiting the account activation by an ARAS forum administrator. So I write for him.

C/2014 Q2 (Lovejoy) spectrum (false nucleus zone).



Sun light was observed with the same setup some days ago. Then he try to divide the observed comet spectrum for sun spectrum.

A colorful version (a little bit saturated) using the nice-looking gnuplot tool by Serge Golovanow (thank you Serge!). I add some labels on molecular emissions.



Happy new year to everyone!

Paolo and Umberto

[Jacques Montier]

Hello all,

Here is my contribution to C/2014 Q2 Lovejoy spectra on 2014/12/30 (19° altitude).
Atmospheric conditions were rather tricky with thick fog banks and a bright Moon high in the sky.
After 3x600s exposures, i couldn't see the target anymore !
Sky background is not removed as i couldn't see anything in the sky apart the fog !!!
As Alpy600 was on the Meade 355mm ACF F/D 10 and guiding on the comet, my friend Pascal took 12x120s exposures with a Canon 40D on a 80mm refractor telescope WO 81 F/D 5.9.

Impossible to detect the tail of Lovejoy because of the fog !

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Happy New Year and clear skies every night !!!

[Dubreuil Pierre]

Bonjour à tous

Le passage en 2015 avec un premier spectre de la comète.
J'ai pris une etoile de meme hauteur (28°) pour la reponse et la qualibration dans le bleu en plus du néeon.

Merci Paolo pour tes remarques et à ton collegue qui a realisé le spectre. Bravo Jacques pour ton spectre qui confirme bien les notres.

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On va pouvoir la suivre tranquillement pour voir ce qui va bouger !

Meilleurs voeux 2015 à tous et breaucoup de nouveaux spectres avec des nouveaux objets à venir !

Cordialement
Pierre
Hello everyone

The passage in 2015 with a first spectrum of the comet.
I chose a star of the same height (28 °) for the answer and qualibration in blue neon and more.

Paolo thank you for your remarks and your colleague who realized the spectrum.
Jacques, congratulations for your spectrum confirms ours.
[attachment = 0] C2014-Q2_20150101_907_pierre dubreuil.png [/ attachment]
We will be able to follow quietly to see what will move!

Best wishes to all in 2015 and many new spectra with new upcoming items!

Best Regards

[Joan Guarro Flo]

ello everyone:

Leave a graphical comparison of the comet last two nights.

The second, only to notice the widening of CN 3880 and 4056 C3.

Question worth pursuing observed the comet? Or observations have only anecdotal value?

We have things you say, Friendly, Joan.

[Dubreuil Pierre]

Bonsoir à tous
La nuit dernière, je ai fait un autre spectre de cette comète. En comparant le spectre du 01/01 aucune évolution n'est observée, sauf peut-être un différence d'amplitude dans le bleu.

_C2014Q2_20150104_865_pierre dubreuil.png (18.78 KiB) Viewed 10139 times

La même question que Joan, doit-on s'attendre à une évolution des raies spectrales?

Cordialement

Good evening everyone
Last night, I made a different spectrum of this comet. Comparing the spectrum 01/01 no change is observed, except perhaps an amplitude difference in blue.

The same question as Joan, should we expect a change in spectral lines?

Best Regards

[Terry Bohlsen]

I've taken 2 spectra of this comet. The first was on 14/12 14 when it was deep in the south. The second was on 3/1/15 when it is at the zenith for me in the late evening. As it is moving north it will become easier for you northerners.
It hasn't really changed much in the 3 weeks.

Terry

[Terry Bohlsen]

There is a pro/am facebook group devoted to this comet. There are a few spectra on it as well as lots of other pics and measurements.
https://www.facebook.com/groups/6256198 ... p_activity
Not sure what can be seen though if you are not a member.
Terry