C/2010 G1 (Boattini)


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I could confirm this comet in the night of discovery on the NEO confirmation page:

"the object is clearly cometary with a coma of 2 arc minutes and with an elongated area of 1'15" in PA237.
8 images, 1 min. exp. time each, SCT-12" f-5.65 taken at 2010 04 05.82632 - 05.83184"

C/2010 G1 Boattini?)  by Bernhard Haeusler, Germany

2010-04-05 by Bernhard Haeusler, Maidbronn, Germany                                                    frozen on comet 

35 min. exposure, 2010-04-05 UT 19:49, 12" SCT  f-5.65 + CCD ST10XME
15.88 mag, coma: 2', tail: 1'15" in PA237  


MPC observation: computed with Astrometrica

COD B82
OBS Bernhard Haeusler
TEL 0.30-m Schmidt-Cassegrain + CCD

NET CMC-14

RG14C6D C2010 04 05.82632 04 11 13.55 +27 09 03.8 16.2 N B82
RG14C6D C2010 04 05.82789 04 11 13.83 +27 09 00.9 16.0 N B82
RG14C6D C2010 04 05.82948 04 11 14.22 +27 08 56.1 16.0 N B82
RG14C6D C2010 04 05.83184 04 11 14.67 +27 08 52.2 16.1 N B82
RG14C6D C2010 04 05.83738 04 11 15.89 +27 08 36.8 16.1 N B82
RG14C6D C2010 04 05.84132 04 11 16.69 +27 08 27.1 16.1 N B82
RG14C6D C2010 04 05.84527 04 11 17.39 +27 08 16.9 16.1 N B82
RG14C6D C2010 04 05.84920 04 11 18.21 +27 08 06.4 16.0 N B82
RG14C6D C2010 04 05.85315 04 11 19.02 +27 07 56.2 16.1 N B82
RG14C6D C2010 04 05.85710 04 11 19.71 +27 07 45.9 16.1 N B82

Gauss curve produced by Astrometrica. The total PSF is using the aperture circle of 3 x 3 pixel around the brightest pixel.
You see the Gauss curve right as the computed ideal line and the real pixels contributed around the ideal line.
The Fit RMS is the deviation from the ideal line (inlay under the Gauss curve).


Photometry computed with FOCAS II, using the Multibox method:

COD B82
OBS Bernhard Haeusler
CATALOG: USNO A2.0 / CMC-14 - BAND: R

                                                         10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB  COD
OBJECT        DATE          TIME          +/-       +/-       +/-       +/-       +/-      +/-  N  FWHM  CAT
------------  ----------      --------     -----  -----  -----  -----  -----  -----  ----  ----  ---

RG14C6D     05/04/2010 19:53:52 15.88 14.92 14.40 14.07 13.81 13.58 5.5 18.1 B82
RG14C6D     05/04/2010 19:53:52* 0.05 0.02 0.04 0.05 0.05 0.06 8 4.2 CMC
RG14C6D     05/04/2010 20:17:10 15.88 14.95 14.47 14.15 13.92 13.73 6.7 18.0 B82
RG14C6D     05/04/2010 20:17:10* 0.05 0.04 0.04 0.07 0.07 0.09 7 4.8 CMC
 

FoCAs II - 07/01/2009-b

FOCAS II is a tool for photometry on the base of data coming from Astrometrica. Focas is basically using the .LOG file of Astrometrica.

Explanation of the FOCAS II table headings:

Object, date and time are self-explaining.
10x10, 20x20 ... 60x60 are the measured magnitudes according to the aperture sizes of photometry in arc sec (rectancle).
SNR is the  Signal-to-noise ratio for aperture photometry (calculator).
SB is the magnitude of the faintest star on the image matching with the used star catalogue. This is not the faintest star of the image!
COD is the MPC Code of the observatory.

second line:
+/- are the precisions of the measurements.
N is the number of the used images for the measurements.
FWHM is the Full-Width Half-Maximum of the total PSF: Measure of the seeing.
CAT is the used star catalog in Astrometrica.

Focas II is using the .log file of Astrometrica and is computing the photometry under different apertures (10x10 ... 60x60).
The graphs are showing the astrometric precision of the images.

Focas II is using the .log file of Astrometrica and is computing the photometry under different apertures (10x10 ... 60x60).
The graphs are showing the astrometric precision of the images.


links:

http://astrosurf.com/cometas-obs/index_i.htm Visual and CCD Observations and images from the "Cometas Obs" mailing list, using the Focas II format

es.groups.yahoo.com/group/Cometas_Obs The Spanish comet observation group in Yahoo

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Copyright of all sites and images of this web: Bernhard Haeusler, Rimpar, Germany   MPC code: B82 Maidbronn