http://www.perseus.gr/ Astrophotography of the heavens including deep sky objects such as galaxies, nebulae and clusters; exoplanet transits; celestial phenomena and the members of the solar system in action. http://www.perseus.gr/Images/s_lunar-scenic-sounion-04.jpg http://www.perseus.gr/ http://www.perseus.gr/Astro-DSO-NGC-0869-0884.htm Open cluster NGC 884 along with NGC 869 comprise the stunning Perseus Double Cluster. Separated by less one degree in the sky, these two clusters are one of the showpieces of the winter sky. Both of these clusters are about 3.2 million years-old and span several million light-yrs across. The pair has been observed as early as 130 BC thanks to various references to Hipparchus (LRGB @ 30:30:30:30 for each component cluster). http://www.perseus.gr/Astro-DSO-NGC-0869.htm Open cluster NGC 884 along with NGC 869 comprise the stunning Perseus Double Cluster. Separated by less one degree in the sky, these two clusters are one of the showpieces of the winter sky. Both of these clusters are about 3.2 million years-old and span several million light-yrs across. The pair has been observed as early as 130 BC thanks to various references to Hipparchus (LRGB @ 30:30:30:30). http://www.perseus.gr/Astro-DSO-NGC-0884.htm Open cluster NGC 884 along with NGC 869 comprise the stunning Perseus Double Cluster. Separated by less one degree in the sky, these two clusters are one of the showpieces of the winter sky. Both of these clusters are about 3.2 million years-old and span several million light-yrs across. The pair has been observed as early as 130 BC thanks to various references to Hipparchus (LRGB @ 30:30:30:30). http://www.perseus.gr/Astro-DSO-NGC-2244.htm Open cluster NGC 2244 in Monoceros lies at the core of the large and expansive Rosette emission nebula. Comprised of over 100 member stars which are interspersed and without a central concentration, the brigher 0B-association member stars help illuminate the surrounding gas. NGC 2244 spans approximately 23 arc-minutes in diameter and lies 4715 light-years away. Various Blok globules visible in the periphery and which often lead to the formation of binary and multiple star systems. (HaLRGB @ 80:30:30:30:30). http://www.perseus.gr/Astro-DSO-Nebulae-Sh2-155.htm A somewhat dim but large nebula in Cepheus which spans 35 light-years across and lies at a distance of 2400 light-years away. It is believed that star formation is low and in spite of the significant hydrogen emission. Its nickname has to do with the small dark circular formation in the center of the field of view which (supposedly) resembles a cave. (HaRGB @ 140:60:60:60). http://www.perseus.gr/Astro-DSO-Nebulae-SNR-CTB-1-NB.htm The extended galactic supernova remnant CTB 1 in Cassiopeia is one of the closest SNR's known lying at a distance of about 9,800 light-years away and physically spanning 98 light-years across. Exposures totalling 30 hrs were required to capture this very dim and large supernova remnant using both narrowband and broadband filters (Ha-SII-OIII-LRGB @ 720:360:420:120:60:60:60). http://www.perseus.gr/Astro-DSO-NGC-7822.htm NGC 7822 along with Ced 214 to its immediate south represent a large and expansive region of emission nebulosity on the border between Cepheus and Cassiopeia. NGC 7822 is associated with active star formation and includes the young open cluster Berkeley 59. The nebula is believed to be illuminated by one of the brightest stars closest to the sun known, namely BD+66 1673, and whose surface temperature is approximately 45,000 degrees Kelvin (HaRGB @ 240:60:60:60). http://www.perseus.gr/Astro-Sat-ISS-2010-09-27.htm Earlier this year, the ISS was successfully captured transiting the Sun following the departure of Atlantis (STS-132) and a few days thereafter the ISS was captured transiting Jupiter in broad daylight. The other day it was the red planet's turn and where the ISS was caught in four successive images passing less than 0.1 degrees north of Jupiter also in broad daylight.