Novinky o kometě ISON

GLORIA pozoruje zdaleka nejjasnější kometu XXI. století, C2012/S1 ISON

Comet ISON at dawn on November 21st (6:20 UT). The image was taken from the Teide Observatory (Instituto de Astrofísica de Canarias) with a digital camera (Canon 5D-MII, 85mm lens) and an exposure time of about 6 seconds. The brightest object in the image is the planet Mercury, while at the bottom center, just above the sea of ​​clouds, the peaks of the Gran Canaria island are visible. Credits: J.C. Casado, iac.es.

Na své cestě ke Slunci bude kometa C2012/S1 ISON nadále zjasňovat, bude však stále těžší ji pozorovat, protože bude příliš blízko u Slunce. Právě teď je kometa před svítáním blízko východnímu horizontu. Podívejte se na 3-D model.

View our Flickr album

View the timelapse from the Teide observatory on YouTube:
November 21st, 2013
November 22nd, 2013

Listopadový blog

1. listopad. Zvyšování jasu komety ISON je daleko pomalejší, než se předpokládalo.

10. listopad. Kometa začala ukazovat svůj chvost ve směru od Slunce.

Kometa ISON, 11/11/2013, dalekohled CATA500 zapojený do projektu GLORIA, Cerro Tololo, Chile.

13. listopad. Na kometě došlo k výbuchu, který vyústil v produkci velkého množství plynu (vzhledem k údajům 30m radiotelescopu IAA-CSIC umístěném na Pico Veleta v pohoří Sierra Nevada ve Španělsku). Následné zjasnění je opravdu výrazné!

A stack of 13x10s unfiltered images taken by BOOTES-2/TELMA + COLORES on Nov. 15, 2013.

Nov. 15. The outburst phase of Comet ISON has concluded, with a total brightness change of 3 magnitudes (factor of ~15) in 3 days. Now it can be observed with the naked eye!

Nov. 18. It is unclear what has happened to Comet ISON. Hermann Boehnhardt (Max-Planck Institute for Solar System Research, Katlenburg-Lindau, Germany) found an early warning sign that its nucleus has possibly undergone splitting into 2 or more sub-nuclei. This is not yet confirmed and other scientists think that the comet has only activated its surface, regaining its original level of activity.

Nov. 22. The comet is under “strict observation” from the Teide observatory (Canary Island).


Have a look to the Flickr album and the timelapse on YouTube:
November 21st, 2013,
November 22nd, 2013.

On November 28th, the comet will make its nearest approach (the so-called perihelion passage) to the Sun, at 1.1 million km. Then, the comet will take a right angle turn in the sky, swinging around the Sun and blazing northward in the evening sky. Close to perihelion it may be possible to see the comet in the daytime with the naked eye. This ‘dirty snowball’  is special because it is a “newcomer” from the very distant Oort cloud of comets, coming very close to the Sun for the first time.

In the coming nights, GLORIA will continue observing Comet ISON with all suitable telescopes in imaging mode. Spectroscopic observations are expected to be conducted with the COLORES spectrograph attached to BOOTES-2/TELMA.

The planned strategy is to convolve the images by applying a Laplace filter or a rotational gradient filter to sharpen the images, in order to confirm the possible nucleus fragmentation as result of the intense gravitational forces. Stay tuned!

Useful links

  1. The comet orbit by SolarSystemScope.
  2. Comet live tracker
  3. Comet news, facts and information.
  4. Finder chart and apparent brightness data also posted here.
Příspěvek byl publikován v rubrice Uncategorized a jeho autorem je Czech Editor. Můžete si jeho odkaz uložit mezi své oblíbené záložky nebo ho sdílet s přáteli.