25 December 2014

Christmas Aurora

December 24 2014 20:30 UTC - QTH Boden, Sweden Loc KP05vs - Outdoor temp -25 C (-13 F)

The Russian TV-carrier on 49.750.00 MHz can also be used (in Europe) to monitor Es and meteor activity. When listening for meteor "pings" the receiving frequency in CW mode should be set to 49.750.00 MHz or in USB mode 49.749.50 MHz. "Pings" and sometimes longer lasting "pings" are always heard, even when there are no well-known meteor showers happening.

A nice view of the Big Dipper´s seven stars behind the Aurora cloud. Close to Mizar, the second star from below, is another star. Its name is Alcor and it is one light-year beyond Mizar. Resolving them is used in a traditional sight of test. Right click on the photo to open it in a new tab and the left click on the photo to magnify it (1600x1600 pixels). Now it is easy to see the star Alcor.

A small group of stars can be seen in the photo. It is the star cluster named Pleiades. This cluster is a smaller version of the Great Dipper. By magnifying the photo you will get a very nice view of the Pleiades.

Camera Sony NEX-6 in auto mode (green). Typical exposure time was ca. 3 seconds automatically set by camera for photos above. A tripod is needed!
Lens Samyang fish-eye 8 mm 1:3.5, with manual focus and aperture settings, for EOS cameras
Lens Adapter Kipon EOS-NEX
Tripod Manfrotto 785B