Comet P/2010 V1 (Ikeya-Murakami)

 in 2010

2010/11/05        2010/11/08

2010 Nov 08

MPC observation computed with Astrometrica using UCAC-2 star catalog:

COD C42
OBS X.Gao, M.-T. Hui
MEA M.-T. Hui
TEL 0.07-m f/2 refractor + CCD
NET UCAC-2
    PK10V010  C2010 11 08.95536 12 48 07.84 -03 45 52.8          10.8 N      C42
    PK10V010  C2010 11 08.95889 12 48 08.26 -03 46 01.4          10.9 N      C42
    PK10V010  C2010 11 08.96230 12 48 08.51 -03 45 58.7          11.0 N      C42
    PK10V010  C2010 11 08.96583 12 48 09.40 -03 46 09.6          11.0 N      C42
    PK10V010  C2010 11 08.96925 12 48 09.78 -03 46 14.7          11.0 N      C42
    PK10V010  C2010 11 08.97278 12 48 10.62 -03 46 12.1          10.9 N      C42
    PK10V010  C2010 11 08.97619 12 48 10.62 -03 46 18.6          10.8 N      C42
    PK10V010  C2010 11 08.97972 12 48 11.38 -03 46 39.7          10.8 N      C42
----- end -----

 

 

Gauss curve produced by Astrometrica with USNO-A2.0. The total PSF is using an aperture circle of 15 x 15 pixel around the brightest pixel. We can see the Gauss curve in the right is as the computed ideal line and the real pixels contributed around the ideal line. The Fit RMS, which inlays under the Gauss curve, is the deviation from the ideal line.

Photometry result computed with FOCAS II, which processes images based upon the .LOG file of Astrometrica, by means of Multibox method:

COD C42
CATALOG: USNO A2.0 / CMC-14 - BAND: R

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD
OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT
------------  ---------- --------  -----  -----  -----  -----  -----  -----  ----  ----  ---
P/2010 V1     08/11/2010 23:20:15  11.68  10.73  10.13   9.75   9.38   9.14   5.7  19.9  C42
P/2010 V1     08/11/2010 23:20:15*  0.05   0.02   0.02   0.02   0.03   0.02     3  20.8  USN

FoCAs II - 17/03/2010
www.astrosurf.com/cometas-obs
es.groups.yahoo.com/group/Cometas_Obs
 

Interpretation of the FOCAS II table headings:

 

Fisrt line:

OBJECT, DATE, TIME: refering to their original meanings respectively

10x10, 20x20 ... 60x60: the aperture sizes of photometry in term of rectangle in arcsec that are used to measure an object's magnitude

SNR: the Signal-to-Noise Ratio for aperture photometry

SB: stars of faintest magnitude on the images used in data reduction with the used star catalog in Astrometrica, rather than the stars of faintest magnitude in the images

COD: MPC Code of the observatory

 

Second line:

+/-: precisions of measurement

N: the number of used images for measurement

FWHM: Full-Width-Half-Maximum of total PSF, relevant to degree of seeing

CAT: the used star catalog in Astrometrica

 

 

 

2010 Nov 05

MPC observation computed with Astrometrica using UCAC-2 star catalog:

COD C42
OBS X.Gao, M.-T. Hui
MEA M.-T. Hui
TEL 0.07-m f/2 refractor + CCD
NET UCAC-2
    PK10V010  C2010 11 05.95646 12 40 27.97 -02 45 13.8          10.1 N      C42
    PK10V010  C2010 11 05.95851 12 40 29.22 -02 45 21.2          10.0 N      C42
    PK10V010  C2010 11 05.96203 12 40 29.79 -02 45 27.6          10.3 N      C42
    PK10V010  C2010 11 05.96546 12 40 30.27 -02 45 28.7          10.4 N      C42
    PK10V010  C2010 11 05.96897 12 40 30.64 -02 45 30.9          10.5 N      C42
    PK10V010  C2010 11 05.97241 12 40 30.74 -02 45 34.5          10.2 N      C42
    PK10V010  C2010 11 05.97591 12 40 31.72 -02 45 39.2          10.2 N      C42
    PK10V010  C2010 11 05.97934 12 40 31.64 -02 46 00.6          10.2 N      C42
----- end -----
 

 

Gauss curve produced by Astrometrica with USNO-A2.0. The total PSF is using an aperture circle of 7 x 7 pixel around the brightest pixel. We can see the Gauss curve in the right is as the computed ideal line and the real pixels contributed around the ideal line. The Fit RMS, which inlays under the Gauss curve, is the deviation from the ideal line.

Photometry result computed with FOCAS II, which processes images based upon the .LOG file of Astrometrica, by means of Multibox method:

COD C42
CATALOG: USNO A2.0 / CMC-14 - BAND: R

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD
OBJECT        DATE       TIME        +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT
------------  ---------- --------  -----  -----  -----  -----  -----  -----  ----  ----  ---
P/2010 V1     05/11/2010 23:20:18  10.70   9.79   9.26   8.90   8.58   8.38  10.9  19.2  C42
P/2010 V1     05/11/2010 23:20:18*  0.07   0.07   0.07   0.08   0.08   0.08     3  23.0  USN

FoCAs II - 17/03/2010
www.astrosurf.com/cometas-obs
es.groups.yahoo.com/group/Cometas_Obs
 

Interpretation of the FOCAS II table headings:

 

Fisrt line:

OBJECT, DATE, TIME: refering to their original meanings respectively

10x10, 20x20 ... 60x60: the aperture sizes of photometry in term of rectangle in arcsec that are used to measure an object's magnitude

SNR: the Signal-to-Noise Ratio for aperture photometry

SB: stars of faintest magnitude on the images used in data reduction with the used star catalog in Astrometrica, rather than the stars of faintest magnitude in the images

COD: MPC Code of the observatory

 

Second line:

+/-: precisions of measurement

N: the number of used images for measurement

FWHM: Full-Width-Half-Maximum of total PSF, relevant to degree of seeing

CAT: the used star catalog in Astrometrica

 

Copyright @ Man-To Hui 2010/11/27

Feel free to e-mail me with any doubts or questions.

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