GOES Xray has observed several C-class flares since our last bulletin. They mainly originated from Catania sunspot groups 36 and 37 (NOAA AR 2051 and 2052). Catania sunspot group 36 has grown significantly and now has a beta-gamma-delta magnetic configuration of its photospheric field. The
largest flare was a C5.3 flare from Catania sunspot group 36, peaking at 6:08 UT on 3 May. A small CME can be associated with this flare, travelling westward. The current SOHO/COR2 imagery indicate the CME is too narrow to be a partial halo, as such it is not expected to be geo-effective.
More C-class flares are expected. There is a moderate chance for an M-class flare. Catania sunspot groups 36 and 37 are the main source candidates. Slow solar wind conditions continue, with current solar wind speed measured by ACE being about 310 km/s. The magnitude of the interplanetary magnetic field was maximally 4 nT. Geomagnetic conditions were quiet and are expected to remain as such till the expected arrival of the slow CME of the UT night of 29-30 April, potentially leading to active conditions from early 5 May.
Equipment: Coronado 90 + Imaging Source DMK + LX75
Processing: Photoshop, Avistack 300 frames
Time UT: 15:00
Exposure 1/500 sec.
With SPONLI Space is getting closer
Image Credit & Copyright: Bill Snyder (at Sierra Remote Observatories)
The yellowish star near center in this dusty telescopic skyview is T Tauri, prototype of the class of T Tauri variable stars. Just next door is the yellow cosmic cloud historically known as Hind’s Variable Nebula (NGC 1555). Over 400 light-years away, at the edge of an otherwise invisible molecular cloud, both star and nebula are seen to vary significantly in brightness but not necessarily at the same time, adding to the mystery of the intriguing region. T Tauri stars are now generally recognized as young (less than a few million years old), sun-like stars still in the early stages of formation. To further complicate the picture, infrared observations indicate that T Tauri itself is part of a multiple system and suggest that the associated Hind’s Nebula may also contain a very young stellar object. The naturally colored image spans about 7 light-years at the estimated distance of T Tauri.-
NASA APOD 03-May-14
The Trifid Nebula (catalogued as Messier 20 or M20 and as NGC 6514) is an H II region located in Sagittarius. It is approximately 5000 ly away from Earth. Its apparent magnitude is 6.3. The object is an unusual combination of an open cluster of stars; an emission nebula (the lower, red portion), a reflection nebula (the upper, blue portion) and a dark nebula (the apparent ‘gaps’ within the emission nebula that cause the trifurcated appearance.
Viewed through a small telescope, the Trifid Nebula is a bright and peculiar object, and is thus a perennial favorite of amateur astronomers.
Imaging telescopes or lenses: Celestron C8 SCT
Imaging cameras: QHYCCD QHY8L
Mounts: Skywatcher HEQ5 Pro Goto
Guiding telescopes or lenses: Orion ShortTube 80
Guiding cameras: QHYCCD QHY5L-II Mono
Focal reducers: Celestron f/6.3 Focal Reducer/Corrector
Software: Cyanogen Maxim DL, DeepSkyStacker, Startools 1.3, PHD guiding, photoshop, Leandro Fornaziero Pardal Astronomy controls
Dates: April 26, 2014
Integration: 1.5 hours
Author: Leandro Fornaziero
AstroPhotography of the day by SPONLI
03 May 2014