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Thursday, February 05, 2009


Penumbral Eclipse of the Moon (9-10 February 2009)

On the evening of Monday 9 February to the early morning of 10 February, there will be a penumbral eclipse of the Moon, where the moon enters the the outer part of Earth's Shadow. While the eclipse isn't dramatic, you will see a distinct but faint darkening of the northern part of the moon, it will still be interesting and the Moon is near the Beehive cluster.

The eclipse will be seen in the Pacific, New Zealand and Australia, as well as South East Asia.
Western Australia sees most of the eclipse on the 9th. The eclipse begins at 11:36 pm AEDST, 11:06 pm ACDST and 9:36 pm AWDST on the 9th.

Mid eclipse is 1:38 am AEDST, 1:08 am ACDST on the 10th and 11:38 pm AWDST on the 9th. The eclipse finishes on 3:39 am AEDST, 3:09 am ACDTS and 1:39 am AWDST. For states without daylight saving subtract an hour.

For people in Asia and New Zealand, see here for a map and contact timings in UT.

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Please take lots of pictures of this Lunar eclipse with a high quality camera.

Use High Dynamic Range Imaging (HDRI) by taking multiple images with different shutter speeds.

The last time I calibrated my camera, I used shutter speeds from 1/200 of a second, all the way up to 3 minutes.

A Lunar eclipse is an outstanding opportunity to calibrate HDRI photometry of the Moon.

The surface of the Moon reflects light in a very angular dependent manner. This has been very well documented before, but not to the accuracy that I would desire.

A Lunar eclipse is how the angular dependant aspects of Solar light reflections can be calibrated.


I got the SECCHI FESTIVAL software to work in IDL tonight!

This has cost me hundreds of dollars personally, but it will be well worth the effort.

I am still having problems with the FESTIVAL software, but step by step, I have been finding solutions.

Why this has been so dificult is rather amazing, but I will share with you the lessons learned.
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