Object:	Large Solar Prominence
Date & Site:	10:30 am on September 29, 2015; Carlsbad, CA Conditions: Clear; 75 degrees
Equipment:	Telescope: Lunt 80mm Ha Telescope Mount: Losmandy G-11 with Gemini Camera: Point Grey Grasshopper USB3 CMOS Video Camera coupled to a Televue 2.5x Barlow (Powermate) for an effective focal length of 1400 mm 0.7 Angstrom bandwidth hydrogen-alpha filter with an 18mm blocking filter
Notes:	This image was created from the best 15% of two separate 1000-frame video clips (each 42 fps): one with exposures set to bring out the prominences and another set to capture surface detail. I used a 2.5x barlow lens to increase the effective focal length and capture more detail. 8.2 light minutes away Back to Images