Sunday, 15 January 2012

Ha Full Disk - 14th January

Ha full disk final by Mark Townley
Ha full disk final, a photo by Mark Townley on Flickr.

Wintertime high pressure is sat squarely over the UK at the moment, and with it comes deep blue skies and cold temperatures. This is great for solar observing, however on my local horizon the sun only gets about 6 or 7 degrees altitude above it - the downside of this is poor seeing, this is most notable in solar images on the limb. which appears to dance and wave in the atmospheric instability. From an imaging point of view this renders (at this resolution!) the spicules and proms on the limb invisible when doing a one shot. However I really took my time in getting a good flat and this has paid dividends in eeking out as much disk detail as possible. Taken with the DS40 @ f21, DMK31.