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💫NGC 6791

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The full Hubble Advanced Camera for Surveys field is full of stars estimated to be 8 billion years old.

Two background galaxies can be seen at upper left.

Credit: NASA, ESA, and L. Bedin (STScI)

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💫IC2177 Seagull Nebula (Canis Major)

Lainate, 15 Dicembre 2018
Ultima ripresa della scorsa notte su questa estesa nebulosa situata sul confine tra le Costellazione del Cane Maggiore e quella dell'Unicorno. L'inquadratura (parziale, per le dimensioni della nebulosa) è incentrata sulla testa del Gabbiano.
6x30' bin 1 H-alpha 7nm Optolong - Moravian G2 8300 - Tripletto 115/800 - iOptron CEM60

💫M45 Pleiades - Taurus

Lainate, 15 Dicembre 2018
Altra ripresa della scorsa notte (leggera foschia sempre presente), dedicata alle Sette Sorelle nella Costellazione del Toro.
LRGB: 120:20:20:20 Optolong Filters _ Moravian G2 8300 AstroProfessional Apo Triplet 115/800 _ iOptron CEM60

💫NGC7380 Wizard Nebula (Cepheus)

Lainate, 15 Dicembre 2018
Cielo sereno, ma con una lieve foschia. Quattro ore di h-alpha su questa nebulosa nella costellazione del Cefeo.
8x30' bin1 Ha 7nm Optolong _ Moravian G2 8300 _ AstroProfessional Apo Triplet 115/800 _ iOptron CEM60

💫NGC 1068 Winds of Change

This is a composite image of NGC 1068, one of the nearest and brightest galaxies containing a rapidly growing supermassive black hole. X-ray data from the Chandra X-ray Observatory are shown in red, optical data from the Hubble Space Telescope in green and radio data from the Very Large Array in blue. The spiral structure of NGC 1068 is shown by the X-ray and optical data, and a jet powered by the central supermassive black hole is shown by the radio data. The X-ray images and spectra obtained using Chandra's High Energy Transmission Grating Spectrometer show that a strong wind is being driven away from the center of NGC 1068 at a rate of about a million miles per hour. This wind is likely generated as surrounding gas is accelerated and heated as it swirls toward the black hole. A portion of the gas is pulled into the black hole, but some of it is blown away. High energy X-rays produced by the gas near the black hole heat the ouflowing gas, causing it to glow at lower X-ray energies.

This Chandra study is much deeper than previous X-ray observations. It allowed scientists to make a high-definition map of the cone-shaped volume lit up by the black hole and its winds, and make precision measurements of how the wind speed varies along the cone. Using this data it is shown that each year several times the mass of the Sun is being deposited out to large distances, about 3,000 light years from the black hole. The wind likely carries enough energy to heat the surrounding gas and suppress extra star formation. These results help explain how a supermassive black hole can alter the evolution of its host galaxy. It has long been suspected that material blown away from a black hole can affect its environment, but a key question has been whether such "black hole blowback" typically delivers enough power to have a significant impact.

Credit:     X-ray (NASA / CXC / MIT / C.Canizares, D.Evans),     Optical (NASA / STScI), Radio (NSF / NRAO / VLA)

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💫NGC7635 Bubble Nebula - Cassiopeia (NB_LRGB combination)

Lainate, 12 Dicembre 2018
Prima parte della serata (18.30 - 24.00) dedicata alla ripresa dei canali OIII e LRGB da aggiungere all'H-alpha ripreso a fine Novembre per questa combinazione LRGB + Narrowband.
AstroProfessional Apo Triplet 115/800 - Moravian G2 8300 - Optolong Filters - iOptron CEM60

Ha: 12x20' bin1
OIII: 4x20' bin1
L: 18x10' bin1
RGB: 4x5' bin2 per canale