Saturday, November 30, 2019

ESTRELLAS CERCANAS A VENUS & LA LUNA ( EN DIA 28-11-2019 ) DESDE ROSARIO - ARGENTINA


.. 8.30pm ..


DIA 28-11-2019









PARA VER FOTOS EN HD ABRIR SIGUIENTE LINK





ESTRELLAS Y MAGNITUDES



1-HD 168708 MAG. 7.25
2-MAG. 7.50
3-HD 168731 MAG. 7.25
4-MAG. 7.65
5-HD 169476 MAG. 8
6-HD 169966 MAG. 6.95
7-HD 169657 MAG. 7.90
8-HD 168574
9-HD 167979
10-HD 168525 MAG. 6.90
11-ESTRELLA DOBLE MAG. 7.55
12-MAG. 7.65










.. en fin 12 estrellas menos !... cuantas mas me faltan ?.... jajajajaja







STAR TRAILS FOR A RED PLANET Image Credit & Copyright: Dengyi Huang



Does Mars have a north star? In long exposures of Earth's night sky, star trails make concentric arcs around the north celestial pole, the direction of our fair planet's axis of rotation. Bright star Polaris is presently the Earth's North Star, close on the sky to Earth's north celestial pole. But long exposures on Mars show star trails too, concentric arcs about a celestial pole determined by Mars' axis of rotation. Tilted like planet Earth's, the martian axis of rotation points in a different direction in space though. It points to a place on the sky between stars in Cygnus and Cepheus with no bright star comparable to Earth's north star Polaris nearby. So even though this ruddy, weathered landscape is remarkably reminiscent of terrain in images from the martian surface, the view must be from planet Earth, with north star Polaris near the center of concentric star trails. The landforms in the foreground are found in Qinghai Province in northwestern China.

BLUE SNOWBALL NEBULA Taken by Kevin R. Witman on November 2, 2019 @ Cochranville, PA, USA




NGC 7662, The Blue Snowball Nebula. There is another deep sky gem in the constellation Andromeda in addition to its famous spiral galaxy. This tiny planetary nebula, whose exact distance is somewhere between 2000-6000 light years, appears to have the color of the planet Uranus and has a size similar to the diameter of Jupiter. The central star which has evolved towards white dwarf star status has a temperature of 135,000 F. I used a Celestron EDGE HD 9.25 equipped with a Celestron 0.7x reducer and a modified Canon XS DSLR, ISO800 to record this image. A stack of 50x15second exposures was calibrated and processed using ImagesPlus and PS5.

Friday, November 29, 2019