P/2008 O2 (McNaught) and Main Belt Asteroid (410928) Maidbronn
Pre-discovery image of MAID02 (K09SO2T), a main belt asteroid and my first discovery. MAID02 = (410928) Maidbronn see: MPC 2009-T05
� 2009-09-26 by Bernhard Haeusler, Maidbronn, Germany frozen on comet, stars and asteroid
24 x 5 min. exposure,
2009-09-26 UT 01:27 to 03:31, 12" SCT
f-6.532 + CCD ST10XME
18.87 mag, coma: 9", tail: 10" in PA 224�
� 2009-09-26 by Bernhard Haeusler, Maidbronn, Germany frozen on MAID02
24 x 5 min. exposure, 2009-09-26 UT 01:27 to 03:31, 12" SCT f-6.532 + CCD ST10XME,
MPC observation: computed with Astrometrica
COD B82
OBS Bernhard Haeusler
TEL 0.30-m Schmidt-Cassegrain + CCD
NET CMC-14
PK08O020 C2009 09 26.06626 00 56 55.63 +16 36 01.8 18.9 N B82
PK08O020 C2009 09 26.08060 00 56 55.27 +16 35 59.8 19.0 N B82
PK08O020 C2009 09 26.09133 00 56 54.87 +16 35 59.3 18.9 N B82
PK08O020 C2009 09 26.10920 00 56 54.23 +16 35 59.7 18.6 N B82
PK08O020 C2009 09 26.14494 00 56 52.88 +16 35 55.5 18.8 N 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/2008 O2 26/09/2009 02:19:52 18.87 18.32
18.00 17.59 17.10 16.93 4.2 18.8 B82
P/2008 O2 26/09/2009 02:19:52* 0.26
0.35 0.56 0.55 0.41 0.32 8 4.5 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