Daily Archives: April 15, 2014

The Sun Online and solar activity. April 15, 2014

Nine sunspot groups were reported by Catania today. Catania sunspot group 25 (NOAA AR 2036) was responsible for the most of the flaring activity during the past 24 hours. The strongest flare of this period, however, was produced by the Catania sunspot group 24 (NOAA AR 2035) that showed rapid magnetic flux emergence in the past several hours: the C8.6 flare peaking at 09:23 UT. We expect further flaring activity on the C-level from these two active regions, with a good chance for an M-class event. The Earth is currently inside a slow (around 350 km/s) solar wind flow with weak (2-3 nT) interplanetary magnetic field magnitude. The geomagnetic conditions are quiet and are expected to remain so.
SIDC

Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Date: 04/15/14
Time UT: 17:00
Exposure 1/500 sec.

With SPONLI Space is getting closer

Region NGC 7822 in Cepheus

NGC 7822 is a large and expansive region of emission nebulosity on the border between Cepheus and Cassiopeia. NGC 7822 represents a region of active star formation and includes the young open cluster Berkeley 59 at the western tip of the nebula with many of the member stars estimated to be only a few million years-old. NGC 7822 lies at a distance of 2,600 to 3,300 light-years away and spans approximately 30 light-years and 90 arc-minutes in diameter (equivalent to three full moons) and another 20 arc-minutes high. 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.

Scope: Stellarvue SV 152
Imaging cameras: Apogee U16M
Mounts: Paramount MX
Software: DC-3 Dreams ACP, PixInsight PixInsinght 1.8 RC7, Maxim DL, photoshop
Filters: Astrodon H-alpha 5nm, AstronDon SII 5nm, Astrodon E-series LRGB
Dates: Sept. 25, 2013
Locations: New Mexico Skies
Frames: 98×600″
Integration: 16.3 hours

Author: Mike Miller

AstroPhotography of the day by SPONLI
15 April 2014

Total lunar eclipse. April 15, 2014

A total lunar eclipse is currently taking place on April 15, 2014. It is the first of two total lunar eclipses in 2014, and the first of a tetrad (four total lunar eclipses in series). Subsequent eclipses in the tetrad will occur on October 8, 2014, April 4, 2015, and September 28, 2015.

Telescope: Orion 80mm
Camera: Imaging Source IS-51MU
Mount: Equatorial fork mount Meade
Software: IC Capture
Frames: Gain 142 – Exposure 1/2500

Observatory SPONLI

Mammatus Clouds over Nebraska

Image Credit & Copyright: Jorn Olsen Photography

When do cloud bottoms appear like bubbles? Normally, cloud bottoms are flat. This is because moist warm air that rises and cools will condense into water droplets at a specific temperature, which usually corresponds to a very specific height. As water droplets grow, an opaque cloud forms. Under some conditions, however, cloud pockets can develop that contain large droplets of water or ice that fall into clear air as they evaporate. Such pockets may occur in turbulent air near a thunderstorm. Resulting mammatus clouds can appear especially dramatic if sunlit from the side. The mammatus clouds pictured above were photographed overHastings, Nebraska during 2004 June.
NASA APOD 15 Apr 2014

Lunar eclipse online

http://web.sponli.com/polnoe-lunnoe-zatmenie/

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