p2010a1_20100306

P/2010 A1 (Hill)

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P/2010 A1 (Hill) � by Bernhard Haeusler, Germany

� 2010-03-06 by Bernhard Haeusler, Maidbronn, Germany frozen on comet and stars

12 x 10 min. exposure, 2010-03-06 UT 22:41, 12" SCT f-5.65 + CCD ST10XME
19.89 mag, coma: 9"

MPC observation: computed with Astrometrica

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

NET CMC-14

PK10A010 C2010 03 06.95612 08 29 02.50 +34 09 12.6 19.8 R B82
PK10A010 C2010 03 06.97024 08 29 02.43 +34 09 04.7 20.0 R B82
PK10A010 C2010 03 06.99847 08 29 02.29 +34 08 56.9 20.0 R B82

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

P/2010 A1 06/03/2010 23:29:51 19.89 19.56 19.42 3.4 19.2 B82
P/2010 A1 06/03/2010 23:29:51* 0.07 0.31 0.25 4 4.7 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.

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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