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La Cañada Observatory, is an initiative by Juan Lacruz, the observatory started astrometric operations in the summer of 2002, it is registered as station J87 in the Minor Planet Center of the International Astronomical Union.

The Observatory also participates in the studies on minor bodies promoted by the Group on Meteorites, Minor Bodies, and Planetary Sciences of the Institute of Space Sciences (CSIC-IEEC).

Sunday, January 6, 2013

NEOCP Confirmations

A new amor object with provisional designation 2013 AL11 was observed and confirmed with the 0.40 m telescope at La Cañada, moving quite fast at about 5 arc seconds per minute the individual exposures were limited to 12 seconds to keep the object untrailed.

References : MPEC 2013-A25

New apollo object designated as 2013 AO27 confirmed.

References : MPEC 2013-A38

Comets C/2012 K5 LINEAR & C/2012 S1 ISON

One hour exposure on Comet ISON, La Cañada 0,40 m F10 Ritchey-Chretien telescope

Comet C/2012 S1 ISON from Observatorio de La Cañada J87 on  05-January-2013
Signal to noise ratio in Y-axis,  full width at half maximum FWHM in X-axis, comet in red, surrounding stars in blue.  

Comet C/2012 S1 ISON, not an obvious comet at the moment, displays a coma size of 15 arc seconds in diameter. This Sun grazer comet is supposed to brighten in its approach to perihelion by 28-November-2013 to become one of these comets to remember.

Saturday, January 5, 2013

C/2013 A1 Siding Spring, the first comet of the year

 January opened with very stable weather at La Cañada, the night of the 4th the average seeing was 2.8 arc seconds which allowed the confirmation followup of the first comet of the year posted on the Minor Planet Center Neo Confirmation Page.

C/2013 A1 (in red) rest of field stars in blue, signal to noise ratio against FWHM plot
Although the comet, at a first glance, doesn't display clear evidences of either coma or tail on the stacked images obtained with the 0.4 m Ritchey-Chretien telescope it definitely stands out from the rest of the sorrounding stars when plotted in a graph of the signal to noise ratio (Y-axis) against the full width at half maximum (X-axis).

Back to the picture, on a more careful inspection, it shows a hint of a tail in the north east direction, measuring the coma size its diameter is around 10 arc seconds.

References : MPEC 2013-A14, CBET 3368