Every day our eyes catch the light of our memories – time spent with family, the journey to work, a special holiday, a beautiful sunset or a dark starlit night. Each image captured is a picture drawn in light – a photograph: only to be lost in our minds or forever forgotten. Nearly two hundred years ago a small group of amateur scientists achieved what had eluded mankind for centuries – the ability to capture a permanent record of an image seen by their own eyes – a moment in time frozen onto a surface. They had discovered Photography. They were the ‘Catchers of the Light’.
Showing posts with label Comet. Show all posts
Showing posts with label Comet. Show all posts

Saturday, January 24, 2015

C/2014 Q2 (Lovejoy) _15-1-2015




C/2014 Q2 (Lovejoy) is a long-period comet discovered on 17 August 2014 by Terry Lovejoy using a 0.2-meter (8 in) Schmidt–Cassegrain telescope.[1] It was discovered at apparent magnitude 15 in the southernconstellation of Puppis.[1] It is the fifth comet discovered by Terry Lovejoy.

By December 2014, the comet had brightened to roughly magnitude 7.4,[4] making it a small telescope and binoculars target. By mid-December, the comet was visible to the naked eye for experienced observers with dark skies and keen eyesight.[5] On 28−29 December 2014, the comet passed 1/3° from globular cluster Messier 79.[6] In January 2015, it brightened to roughly magnitude 4−5,[7] and became one of the brightest comets located high in a dark sky in years. On 7 January 2015, the comet passed 0.469 AU (70,200,000 km; 43,600,000 mi) from Earth.[8] It crossed the celestial equator on 9 January 2015 becoming better seen from thenorthern hemisphere.[9] The comet will come to perihelion (closest approach to the Sun) on 30 January 2015 at a distance of 1.29 AU (193,000,000 km; 120,000,000 mi) from the Sun.[2]

Before entering the planetary region (epoch 1950), C/2014 Q2 had an orbital period of about 11000 years.[3] After leaving the planetary region (epoch 2050), it will have an orbital period of about 8000 years.[3]

Saturday, January 17, 2015

C/2014 Q2 (Lovejoy) Animation


15-1-2015 C/2014 Q2 (Lovejoy) Animation

The gif file is quite big ,so please be patient.

No noise reduction,just calibration with darks and flats

40 frames total ,100 sec/frame

W.O FLT110 with dedicated TMB field flattenerFeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters: Lum Baader
Sky-Watcher EQ6 Pro

Sunday, November 10, 2013

COMET ISON C/2012_S1 ANIMATION


Comet Ison C/2012_S1 animation November 9 2013

C/2012 S1, also known as Comet ISON or Comet Nevski–Novichonok, is a sungrazing comet discovered on 21 September 2012 by Vitali Nevski (Виталий Невский, Vitebsk, Belarus) and Artyom Novichonok (Артём Новичонок,Kondopoga, Russia).[5] The discovery was made using the 0.4-meter (16 in) reflector of the International Scientific Optical Network near Kislovodsk, Russia and the automated asteroid-discovery program CoLiTec.[2][6] Precovery images by the Mount Lemmon Survey from 28 December 2011 and by Pan-STARRS from 28 January 2012 were quickly located.[7] Follow-up observations were made on 22 September by a team from Remanzacco Observatory in Italy using the iTelescope network.[2][8] The discovery was announced by the Minor Planet Center on 24 September.[7] Observations by SWIFT suggest that C/2012 S1's nucleus is around 5 kilometers (3.1 mi) in diameter.[9]

C/2012 S1 will come to perihelion (closest approach to the Sun) on 28 November 2013 at a distance of 0.0124 AU (1,860,000 km; 1,150,000 mi) from the center point of the Sun.[3] Accounting for the solar radius of 695,500 km (432,200 mi), C/2012 S1 will pass approximately 1,165,000 km (724,000 mi) above the Sun's surface.[10] Its trajectory appears hyperbolic, which suggests that it is a dynamically new comet coming freshly from the Oort cloud.[11][12]On its closest approach, C/2012 S1 passed about 0.07248 AU (10,843,000 km; 6,737,000 mi) from Mars on 1 October 2013, and it will pass about 0.4292 AU (64,210,000 km; 39,900,000 mi) from Earth on 26 December 2013.[13]

Shortly after its discovery, similarities between the orbital elements of C/2012 S1 and the Great Comet of 1680 led to speculation that there might be a connection between them.[14] However, further observations of ISON showed that the two comets are not related.[15]

Earth will pass near the orbit of C/2012 S1 on 14–15 January 2014, well after the comet has passed, at which time micron-sized dust particles blown by the Sun's radiation may cause a meteor shower or noctilucent clouds.[16][17]However, both events are unlikely. Because Earth only passes near C/2012 S1's orbit, not actually through the tail, the chances that a meteor shower will occur are slim.[18] In addition, meteor showers from long period comets that make just one pass into the inner solar system are very rare, if ever recorded.[19] The possibility that small particles left behind on the orbital path—almost one hundred days after the nucleus has passed—could form noctilucent clouds is also slim. No such events are known to have taken place in the past under similar circumstances.[19]

From Wikipedia, the free encyclopedia
Instruments and exposure data:

12*3min bin1x1

W.O FLT110 with dedicated TMB field flattener
Sky-Watcher EQ6 Pro
FeatherTouch 3'' focuser
Starizona MicroTouch autofocuser
W.O ZS80 ED
SBIG ST10XME CFW9
Meade DSI
Filters: Luminance Astrodon

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