[vsnet-alert 13594] Re: Nova Lupi 2011

[Rob Kaufman]

Sky partly cleared late tonight (18 Aug) and I obtained a very poor quality
DSLR image (RGB).  The nova appears to be a similar magnitude to 16 Aug
(~11.3, green channel, 12:15 UT).  With my earlier three images, the nova
appeared roughly the same in R, G & B channels.  Tonight however I notice
for the first time that the red channel appears considerably brighter than
the green, which is considerably brighter than the blue.  Not much I can do
without a better image.  Might clear a bit more later.

Cheers -

Rob Kaufman, KBJ
Bright, Vic, Australia

On Tue, Aug 16, 2011 at 9:21 PM, Rob Kaufman <rob.kau at gmail.com> wrote:

> Just got a shot in moonlight & can confirm dramatic decline:
> http://i727.photobucket.com/albums/ww271/Rob_Kau/NLup201116Aug2011text.jpg
>
> (Need longer exposures at this magnitude.)
>
> Nova Lupi 2011        110814.382    95    KBJ (94,97; ptg)
> Nova Lupi 2011        110816.444   113   KBJ (112, 115; AAVSO Chart 5224n;
> ptg)
>
> Cheers -
>
> Rob Kaufman
> Bright, Vic, Australia
>
>
>
>   On Tue, Aug 16, 2011 at 7:55 PM, Rod Stubbings <stubbo at sympac.com.au>wrote:
>
>> **
>> An observation on N Lup 2011 tonight now shows it to have faded by almost
>> 2 magnitudes!
>>
>> N LUP 2011        110811.564   101  Stu.RASNZ
>> N LUP 2011        110812.579   100  Stu.RASNZ
>> N LUP 2011        110814.395    95  Stu.RASNZ
>> N LUP 2011        110816.376   113 Stu.RASNZ
>>
>> Regards,
>> Rod.
>>
>>
>> ________________________________
>>
>> Rod Stubbings,
>> Tetoora Observatory,
>> Tetoora Road,
>> Vic, Australia.
>> stubbo at sympac.com.au
>> http://rodstubbingsobservatory.wordpress.com/
>>
>> _________________________________
>>
>>  ----- Original Message -----
>> *From:* Rob Kaufman <rob.kau at gmail.com>
>>   *To:* vsnet-alert <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>
>> *Cc:* Rod Stubbings <stubbo at sympac.com.au> ; nbrown77 at bigpond.com ; Mati
>> Morel <mmorel7 at bigpond.com> ; aavso-discussion at mira.aavso.org
>> *Sent:* Tuesday, August 16, 2011 10:47 AM
>> *Subject:* Re: [vsnet-alert 13587] Re: Nova Lupi 2011
>>
>> Here's a link to a crop of a widefield of the area reported to have been
>> taken in the Netherlands on 20:22, 25 July UT, showing the nova.  Quite
>> fuzzy and crowded and not terribly useful for a magnitude estimate, but it
>> appears to lie between the 104 & 112 comp stars, quite bright.
>> http://tinyurl.com/3cfkngk
>>
>> Thanks for the additional comp stars Mati.
>>
>> Cheers -
>>
>> Rob Kaufman
>> Bright, Vic, Australia
>>
>> On Mon, Aug 15, 2011 at 12:00 AM, <hambsch at telenet.be> wrote:
>>
>>> I have been taking time series images last night (V and I filters) and
>>> also saw a severe brightness increase. Had to cut down my exposure time by
>>> half.
>>> Will take some days to get the data analysed since I am put of town until
>>> Tuesday evening.
>>>
>>> Josch
>>> ----- Originele e-mail  -----
>>> Van: "Rod Stubbings" <stubbo at sympac.com.au>
>>> Aan: "Rob Kaufman" <rob.kau at gmail.com>, aavso-discussion at mira.aavso.org,
>>> vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp
>>> Verzonden: Zondag 14 augustus 2011 14:05:07 GMT +01:00 Amsterdam /
>>> Berlijn / Bern / Rome / Stockholm / Wenen
>>> Onderwerp: [vsnet-alert 13585] Re: Nova Lupi 2011
>>>
>>> I have also been keeping an eye on N Lup and noticed a steady rise and
>>> tonight brighter around 9.5.
>>>
>>> N LUP 2011        110811.564   101  Stu.RASNZ
>>> N LUP 2011        110812.579   100  Stu.RASNZ
>>> N LUP 2011        110814.395    95  Stu.RASNZ
>>>
>>> Regards.
>>> Rod.
>>>
>>> ________________________________
>>>
>>> Rod Stubbings,
>>> Tetoora Observatory,
>>> Tetoora Road,
>>> Vic, Australia.
>>> stubbo at sympac.com.au
>>> http://rodstubbingsobservatory.wordpress.com/
>>>
>>> _________________________________
>>> ----- Original Message -----
>>> From: "Rob Kaufman" <rob.kau at gmail.com>
>>> To: <aavso-discussion at mira.aavso.org>;
>>> <vsnet-alert at ooruri.kusastro.kyoto-u.ac.jp>
>>> Sent: Sunday, August 14, 2011 8:38 PM
>>> Subject: [vsnet-alert 13584] Nova Lupi 2011
>>>
>>>
>>> > After imaging this nova on 8 Aug at mag 10.3, tonight I had my first
>>> > opportunity to have another 'look' at it.  It has brightened
>>> considerably.
>>> > Image here:
>>> >
>>> http://i727.photobucket.com/albums/ww271/Rob_Kau/NovaLupi201114Aug2011crop.jpg
>>> >
>>> > In generating a chart in AAVSO's VSP, I noticed that the visual
>>> sequence
>>> > is
>>> > pretty wobbly for mags brighter than the discovery mag.  The nova
>>> appears
>>> > to
>>> > be sitting somewhere around midway between the 99 and 84 comp stars at
>>> the
>>> > moment (marked on image linked above), a big gap of 1.5 magnitudes.
>>>  Any
>>> > chance of a few more comp stars?  Thanks.
>>> >
>>> > Cheers -
>>> >
>>> > Rob Kaufman
>>> > Bright, Victoria, Australia
>>> >
>>>
>>
>>
>