A question for 'szgabor': 'Where was this?'

by Photon

In response to 'szgabor's' riddle photograph, titled 'spiral lines' which was uploaded 16 August 2010.

Where was this photograph taken? I shall post another view shortly.
Uploaded05/09/2010 - 02:47
Shutter Speed20.1 sec
Focal LengthN/A

Posted 05/09/2010 - 17:16 Link
It looks like some mineral crystal and its inside is lit with blue light.
My first guess is a salt-crystal lamp, but I think it would be too simple and easy.
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Posted 05/09/2010 - 20:05 Link
Is that crystal?,,,,,Or could it be , perhaps,,, Ice??
Though it does look dry to be ice
Best Regards, Larry.

All the gear & no idea.
Posted 06/09/2010 - 11:24 Link
A geode?
AF - Pentax K5, Sigma 10-20/4-5.6, Tamron 17-50/2.8, Sigma 30/1.4, Sigma 70-200/2.8, Tamron 70-300/4-5.6
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Stuff - Metz 58 AF1, Cactus v4, Nikon SB24, Raynox 150, Sigma 1.4x TC, Sigma 2x TC, Kenko 2x macro TC, Redsnapper 283 tripod, iMac 27”, Macbook Pro 17”, iPad, iPhone 3G
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Feel free to edit any of my posted photos! If I post a photo for critique, I want brutal honesty. If you don't like it, please say so and tell me why!
Posted 08/09/2010 - 02:05 Link
Yes, you all correct, it is the build up of lime-scale within the copper outlet pipe/tube at the top of my hot water cylinder. The outlet tube was originally 19 mm inside diameter (I/D) approx. The resultant escape hole measured approximately 8mm x 6mm after some 27 years of domestic use. Thus a cross sectional area reduction of 83%, approximately! I supported the tube on a scrap of extrusion, placed a blue card behind the subject and illuminated the card with a hand held torch in an attempt to give a blue water affect. 35mm macro lens with 31mm of extension tube, I set the exposure to bulb and guessed at 17 seconds, using the old contact printing method of counting 1 'O', 2 'O', etc., in my head. See my later uploaded oblique view image of a short length of the tube.
Regards Photon
All five minute jobs take a minimum of eight hours!
Edited by Photon: 08/09/2010 - 02:07
Posted 08/09/2010 - 05:58 Link
The combination of the blue and white colors is really nice. I like shape and texture of crystals, nice shot Colin.
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