Copyright © All rights reserved. Made By Erik Bryssinck  Terms of use  |  Privacy policy

C/2011 L4 (PANSTARRS)  -  26 march 2013

Astrometric data for minor planet center

COD B96

CON BRIXIIS Observatory, Eyckensbeekstraat, Kruibeke, Belgium [erik.bryssinck@telenet.be]

OBS E.Bryssinck

MEA E.Bryssinck

TEL 0.08-m f/5.5 refractor + CCD

ACK MPCReport file updated 2013.03.31 14:23:47

AC2 erik.bryssinck@telenet.be

NET CMC-14

    CK11L040  C2013 03 26.80005 00 33 33.01 +29 20 05.4           5.2 N      B96

    CK11L040  C2013 03 26.80073 00 33 32.99 +29 20 09.2           5.2 N      B96

    CK11L040  C2013 03 26.80142 00 33 32.97 +29 20 12.7           5.2 N      B96

    CK11L040  C2013 03 26.80212 00 33 32.96 +29 20 16.8           5.3 N      B96

    CK11L040  C2013 03 26.80280 00 33 32.98 +29 20 21.0           5.2 N      B96

----- end -----

Af(rho) values available, only by request via  the CARA coordinator

Data obtained from FOCAS-II software

COD B96

CON BRIXIIS Observatory, Eyckensbeekstraat, Kruibeke, Belgium

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

                                   10x10  20x20  30x30  40x40  50x50  60x60   SNR   SB   COD

COMET         UTC                    +/-    +/-    +/-    +/-    +/-    +/-     N  FWHM  CAT

------------  -------------------  -----  -----  -----  -----  -----  -----  ----  ----  ---

C/2011 L4     26/03/2013 19:14:03   5.92   5.09   4.69   4.45   4.28   4.15  58.0  13.7  B96

C/2011 L4     26/03/2013 19:14:03*  0.03   0.02   0.01   0.01   0.01   0.01     5  10.3  CMC

COMET         UTC                   DELTA    R    APER    Mag   AfRho   +/-   Log   Obs

------------  -------------------   -----  -----  -----  -----  -----  ----  -----  ---

C/2011 L4     26/03/2013 19:14:03    1.23   0.57  22.37  04.97  48610   778  4.687  B96

Af(rho) data, obtained from images taken as descibed for CARA approuch (filtered images with R and/or I Bessel filter)

The evening of 26 march was a clear evening, so it was possible to observe this comet. Not easy from my backyard, so the telescope in my observatory can't be used. Is must pget place a transportable setup with a tripod, small telescope (ED80 refractor) and ST10XME caemra. The main goal is to measure the Af(rho) values for CARA. So is must have a good image of the comet with several ref. stars with good signal to noise ratio.  It was not easy to ffind the comet with a binocular, finally i found the comet and could start with imaging. I take a lot of images of 20 sec. exp. time each by use of the R-Schuler photometric filter. Comet was good visible and the nucleus wasn't overexposed, that’s important for the photometry.  After the proceesing with dark/flat and substracting the gradient I could start with analyses of the images and obtaining the data, like mentioned below.