----- Original Message ----- From: "paulobao" <pallo...@gmail.com>
To: "LCROSS_Observation" <lcross_observation@googlegroups.com>
Sent: Friday, July 03, 2009 10:23
Subject: [LCROSS_OBS: 821] LCROSS from yestarday with a 4" refractor
Hi,
yestarday I caught LCROSS with my Tak FS102 (a 42 refractor) +
QSI532WS-M1 at -20ºC.
I live in a LP city in portugal.
----- Original Message ----- From: "Derek C Breit" <breit_id...@hotmail.com>
To: <lcross_observation@googlegroups.com>
Sent: Friday, July 03, 2009 20:13
Subject: [LCROSS_OBS: 824] Re: LCROSS from yestarday with a 4" refractor
> Very Nice...
> Now I want to try for it from Morgan Hill, CA..
> -121.702767, 37.113283, 282m
> I can't even remember the exact name to enter into Horizons..
> Note is someone decides to do it for me, which is not absolutely > necessary,
> I need RA and DEC "of date", not J2000.0..
Because it was expected that sky washout from the near full moon would
wash out an expected 15-16 mag object. Although no one has done
photometry on their Centaur images, clearly, the spacecraft must be
brighter than mag 15-16. The expected result - object not capable of
being imaged because of Moon light interference - is not being
experienced by reporting imagers. In otherwords, a happy, fortitous
and unexpected departure from prediction. It terms of altitude,
LCROSS is still well-placed for northern hemisphere observers. - Clear
skies - Kurt
On Jul 3, 7:25 pm, "Derek C Breit" <breit_id...@hotmail.com> wrote:
> Because it was expected that sky washout from the near full moon would
> wash out an expected 15-16 mag object. Although no one has done
> photometry on their Centaur images, clearly, the spacecraft must be
> brighter than mag 15-16. The expected result - object not capable of
> being imaged because of Moon light interference - is not being
> experienced by reporting imagers. In otherwords, a happy, fortitous
> and unexpected departure from prediction. It terms of altitude,
> LCROSS is still well-placed for northern hemisphere observers. - Clear
> skies - Kurt
> On Jul 3, 7:25 pm, "Derek C Breit" <breit_id...@hotmail.com> wrote:
> > Hmmm..
> > This says I have a 70 degree pass of LCROSS...
> > I thought the Northern Hemisphere was not supposed to have good viewing of
> > this object???
I concur, yet I need to reduce all my data. Got more imagery last night too even with the bright moon.
When I reported my first observations last monday, LCROSS had passed by a mag 16.2 star and was clearly fainter hence my estimate of its brightness.
I'm using a Luminence filter for the CCD images which is fine for doing differential photometry. To do it properly I'd have to use a V or other photometric filters, which unfortunately are not in the remote filterwheel. So the magnitude is an approximation but obviously close enough.
..paul.
----- Original Message ----- From: "paulobao" <pallo...@gmail.com>
To: "LCROSS_Observation" <lcross_observation@googlegroups.com>
Sent: Sunday, July 05, 2009 07:16
Subject: [LCROSS_OBS: 834] Re: LCROSS from yestarday with a 4" refractor
Well, in fact I did some photometry of it (from the 20090702 data).
I used 2 different software packages and the results are the same at
mag 16.
On 5 Jul, 02:36, "canopu...@yahoo.com" <canopu...@yahoo.com> wrote:
> Because it was expected that sky washout from the near full moon would
> wash out an expected 15-16 mag object. Although no one has done
> photometry on their Centaur images, clearly, the spacecraft must be
> brighter than mag 15-16. The expected result - object not capable of
> being imaged because of Moon light interference - is not being
> experienced by reporting imagers. In otherwords, a happy, fortitous
> and unexpected departure from prediction. It terms of altitude,
> LCROSS is still well-placed for northern hemisphere observers. - Clear
> skies - Kurt
> On Jul 3, 7:25 pm, "Derek C Breit" <breit_id...@hotmail.com> wrote:
> > Hmmm..
> > This says I have a 70 degree pass of LCROSS...
> > I thought the Northern Hemisphere was not supposed to have good viewing > > of
> > this object???
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