Archive for the 'Photo' Category

Diffraction Pattern of My Cracked LX90


diffraction pattern cracked lx90 300x220 Diffraction Pattern of My Cracked LX90
The diffraction pattern of the 8″ LX90AT with the broken corrector plate

hadar cracked lx90 lens 280x235 Diffraction Pattern of My Cracked LX90

The image of the Hadar (Beta Centauri) through the broken 8″ LX90AT. Look, the star image is no longer pinpoint.

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Saturn delivered by the 8″ LX90AT with the broken corrector plate. It looks like the Saturn is being engulfed by a black hole.

Now, the main character~
cracked lx90 200x300 Diffraction Pattern of My Cracked LX90

Happy Belated Mid-Autumn Festival

Cloudy night 14 Sept 2008
Cloudy night on 14 Sept 2008

Well, it’s really a very belated Happy belated Mid-Autumn Festival(中秋节)! Another unofficial name is Mooncake Festival. Chinese celebrates this festival by eating mooncake and enjoy watching the moon. Some even lift off the “Kong Ming” Lantern with their wishes on the lantern to the sky.

It’s on 15 August every lunar year. (14 September in 2008). On this day, the moon is usually the biggest througout the year. The moon is called as Harvest Moon in western countries.

However, the largest moon (Harvest Moon) didn’t fall on 14 September but instead the next day. So, we don’t have the largest moon during this year Mooncake Festival due to the moon was still between the perigee and apogee.

At the end, please, enjoy my artwork of moon. The silhoutte was a tree not less than 50m from me.

Moon Silhouette on 18 Sept 2008

Best McNaught Photos! [Updated!]

Although I haven’t seen McNaught myself these days, the spectacular images around the webs pleased me very well. I have been collecting the best McNaught photos for my very own collection but sharing is always a better attitude. :) Enjoy!

New Addition!

Kevin Crause New Amazing Photo!
Author: Kevin Crause
Location: Mossel Bay, Western Cape, South Africa
Date: 20 January 2007
Photo Details: Nikon D2X, 80mm lens, f/2.8, 20secs, ISO800
Description: This is probably the longest tail I have seen!

 CometMcNaughtK Crause%28Med%29 Best McNaught Photos! [Updated!]
Author: Kevin Crause
Location: Mossel Bay, Western Cape, South Africa
Date: 17 January 2007
Photo Details: Nikon D2X, 120mm lens, f/5.3, 9secs, ISO200

 Pieterse1 Best McNaught Photos! [Updated!]
Author: Hannes Pieterse
Location: Bloemfontein, South Africa.
Date: 16 January 2007
Photo Details: Canon 30D, 300mm, f/8, 2secs, ISO800

 Penning Best McNaught Photos! [Updated!]
Author: Hannes Pieterse
Location: Bloemfontein, South Africa
Date: 18 January 2007
Photo Details: Sony Cybershot DSC-P93A, f/2.8, 25secs, ISO100

Crane
Author: Steve Cranne
Location: Cape Town, South Africa
Date: 19 January 2007
Photo Details: Canon 300D, Canon 50mm lens, f/1.8, 8secs

Images of Transit of Mercury

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Above is the transit sequence.

Are the photos above able to make you consider to get one solar filtered telescope? If I were you, I do. However, the solar minimum is around which means that the solar activity is quite inactive now. The scene may not be that gorgeous. I might hold my penny.

Kudos to March05 again for the photos above!

Edited: Photo is replaced as requested by March05. The sunspot numbers are revised.