NGC i IC objekti

[Astro_fun_times]

Nema sta da uklanjam spajkove, to je tako na njutnu.
A i to bi bila velika zajebancija maskirati kako se ne bi stretchova taj deo, nisam bas toliko lud da se time bakcem😂

[kruska]

Dok ne snimim dovoljno frameova ybog oblaka idu obrade od prosle godine,
Hvala na paznji     
Obrada PI IC1795, 100x30s fish head nebula  f2 420mm, ASI533..
P.s. U sredini slike nije artefakt od gradienta nego deo nebule sa OIII

[Astro_fun_times]

Bravo kruska, dobra je

[bratislav]

Kad je vreme lose, vadimo slike iz naftalina (i ponovo ih obradjujemo).
Ovaj put jos jedan daleko juzni objekat, vrlo poznat ali nazalost ne i vidljiv iz nasih krajeva, velicanstveni Centaurus-A, NGC 5128, Caldwell 77. Jedan od najsjajnijih X-ray i radio objekata na nebu pogonjen jednom od najmasivnijih crnih rupa koje znamo, uz to i fizicki najblizi nama X-ray izvor.

Vizuelno takodje impresivan objekat, poznat medju amaterima kao "hamburger galaksija".

Sa Wikipedije:

"Centaurus A (also known as NGC 5128 or Caldwell 77) is a galaxy in the constellation of Centaurus. It was discovered in 1826 by Scottish astronomer James Dunlop from his home in Parramatta, in New South Wales, Australia. There is considerable debate in the literature regarding the galaxy's fundamental properties such as its Hubble type (lenticular galaxy or a giant elliptical galaxy) and distance (11–13 million light-years). It is the closest radio galaxy to Earth, as well as the closest BL Lac object, so its active galactic nucleus has been extensively studied by professional astronomers. The galaxy is also the fifth-brightest in the sky, making it an ideal amateur astronomy target. It is only visible from the southern hemisphere and low northern latitudes.

The center of the galaxy contains a supermassive black hole with a mass of 55 million solar masses, which ejects a relativistic jet that is responsible for emissions in the X-ray and radio wavelengths. By taking radio observations of the jet separated by a decade, astronomers have determined that the inner parts of the jet are moving at about half of the speed of light. X-rays are produced farther out as the jet collides with surrounding gases, resulting in the creation of highly energetic particles. The X-ray jets of Centaurus A are thousands of light-years long, while the radio jets are over a million light-years long.

It is also one of the nearest large starburst galaxies, of which a galactic collision is suspected to be responsible for an intense burst of star formation. Models have suggested that Centaurus A was a large elliptical galaxy that collided with a smaller spiral galaxy, with which it will eventually merge. For that reason, the galaxy has been of particular interest to astronomers for years. While collisions of spiral galaxies are relatively common, the effects of a collision between an elliptical and a spiral galaxy are not fully understood."

200mm f/5 Njutn (sa Paracorr-1 je f/5.75), 10x10min subs, prastara QHY-8, snimljeno sa Bortle 2 lokacije (mozda je tada bila cak i Bortle 1, snimljeno je 2009 kad je Bendigo koji je najblizi grad bio manji)


5128_crop by bratislav3162, on Flickr

[bratislav]

I jos jedan sa dalekog juga.
NGC 104 je verovali ili ne DRUGI najsjajniji kuglasti skup na nebu. Svejedno izuzetno impresivan i u okularu i na chipu.

"47 Tucanae or 47 Tuc (also designated as NGC 104 and Caldwell 106) is a globular cluster located in the constellation Tucana. It is about 4.45 ± 0.01 kpc (14,500 ± 32.6 ly) from Earth, and 120 light years in diameter. 47 Tuc can be seen with the naked eye, with an apparent magnitude of 4.1.[10] It appears about 44 arcminutes across including its far outreaches. Due to its far southern location, 18° from the south celestial pole, it was not catalogued by European astronomers until the 1750s, when the cluster was first identified by Nicolas-Louis de Lacaille from South Africa.

47 Tucanae is the second brightest globular cluster after Omega Centauri, and telescopically reveals about ten thousand stars, many appearing within a small dense central core. The cluster may contain an intermediate-mass black hole.
The cluster was recorded in 1751-2 by Nicolas-Louis de Lacaille, who initially thought it was the nucleus of a bright comet. Lacaille then listed it as "Lac I-1", the first object listed in his deep-sky catalogue"

250mm f/5 Njutn sa Paracorr-1 (f/5.75) na homemade montazi, QHY-8, 40x60s subs, slikano iz Melburna (Bortle 6).

47Tuc_NGC104 by bratislav3162, on Flickr