Thursday, August 30, 2007
In the process of contructing a timelapse movie of the eclipse I generated this composite view of last Tuesday morning's lunar eclipse. The size, shape and "color" of the Earth's shadow at the distance of the moon is revealed.
Tuesday, August 28, 2007
The larger scale images were obtained through the Questar. Exposures with this instrument ranged from 10 seconds to 23 seconds working at ISO 800 and F/16. Wider field images were shot through the EF 400 F/2.8L IS lens at F/4.0 ISO 800 with expsoures from 4 to 15 seconds.
A 23 second exposure at mid eclipse.
A 15 second exposure showing the sparse star field of the event.
A 4 second exposure showing the turquiose blue tinge of the shadow - possibly due to ozone in Earth's upper atmosphere.
Remember this old trick? A Looong exposure of a total lunar eclipse through a wide angle lens? Well - this is what you get when you try it with a digital SLR, no noise reduction and high ambient temperatures. An ill-fated attempt at capturing the full eclipse from beginning to end in a single 3 hour long exposure. Even with the camera set to ISO 100 - the noise was just shocking. The ambient temperature was 86 degrees Fahrenheit. A task best left to film for sure! ;-> Canon EOS 5D | 16-35mm F/2.8 L lens @ 24mm and F/18 | ISO 100 | exposure @ 10600 seconds!