Double-Double Star in Lyra
The naked eye double star near Vega is a pair of double stars.
Telescope: Meade ETX-105 EC at f/14
Camera: MI-1300 CMOS sensor
Image Processing: Composite/18 in Registax, Adjust levels so background is black
August 30, 2003 10:23pm PDT
Algieba (Lion's Mane)
The bright star in the mane of the lion is an orange-yellow binary star. The separation is 4.4 arcsec.
Telescope: Meade ETX-105 EC at f/35
Camera: MI-1300 CMOS sensor + IR-block filter
Image Processing: Composite in Registax, Adjust levels so background is black
April 8, 2004 11:50pm PDT
Castor and Pollux are the twin bright stars in the constellation Gemini. The telescope reveals that Castor is a double star. The stars are 3.9 arcsec apart.
Telescope: Meade ETX-105 EC at f/35
Camera: MI-1300 CMOS sensor
Image Processing: Composite in Registax, darken background in GIMP
October 19, 2003
Red supergiant star in Orion. Betelgeuse has an apparent diameter of about 0.1 arcsec. Large enough that some professional instruments can study its atmosphere.
Telescope: Meade ETX-105 EC at f/35
Camera: MI-1300 CMOS sensor
Image Processing: Composite in Registax, Adjust levels so background is black in GIMP
October 19, 2003
Castor picture taken afocally with digital camera.
Telescope: Meade ETX-105 EC
Camera: Ricoh RDC-5000 and 8mm eyepiece
Image Processing: none
February 7, 2003