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Eclipse of moon on Oct. 27



 
 
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  #1  
Old October 16th 04, 06:15 AM
Jerry Gunnett
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Default Eclipse of moon on Oct. 27

You might try one of these or do a google search.
Kindest Regards
Jerry
http://origins.colorado.edu/~rachfor.../barndoor.html
http://members.kingston.net/rasc/barndoor.htm


"Gordon Zola" wrote in message
...
There is a full eclipse of the moon coming up this month, and you will
be able to view it well from North America. It starts at 9:14 PM and
ends at 12:54 AM, with the period of totality between 10:23 and 11:45,
all eastern times.

Better catch it now, because the next one is in 2007.

To get a good picture, use a long lens (2000mm if you have one, for a
digital or 35mm camera). Turn off the autoexposure (and the flash
:-/). When still fully illuminated by the sun, expose for a
darkish-grey object lit by the sun (around f5.6 at 1/200 for ASA 100).
During totality, your guess is as good as mine... but chances are you
will have to use a fairly slow shutter speed and the image will blur
because of movement.

...unless you have a clock drive! Anyone have a design for making a
simple one?

G.



  #2  
Old October 16th 04, 08:37 AM
b4
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Default

2000mm lens (or Meade LX10 in my case) is too long on a 10D as the moon
image is larger than the sensor, but OK on a 35mm.

"Gordon Zola" wrote in message
...
There is a full eclipse of the moon coming up this month, and you will
be able to view it well from North America. It starts at 9:14 PM and
ends at 12:54 AM, with the period of totality between 10:23 and 11:45,
all eastern times.

Better catch it now, because the next one is in 2007.

To get a good picture, use a long lens (2000mm if you have one, for a
digital or 35mm camera). Turn off the autoexposure (and the flash
:-/). When still fully illuminated by the sun, expose for a
darkish-grey object lit by the sun (around f5.6 at 1/200 for ASA 100).
During totality, your guess is as good as mine... but chances are you
will have to use a fairly slow shutter speed and the image will blur
because of movement.

...unless you have a clock drive! Anyone have a design for making a
simple one?

G.



  #3  
Old October 16th 04, 09:26 AM
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Default

On Sat, 16 Oct 2004 03:27:13 GMT, Gordon Zola
wrote:

... turn off ... the flash. :-/


Yeah, one guy could wreck it for everyone. :-)

  #9  
Old October 16th 04, 11:25 PM
William Graham
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wrote in message
news
On Sat, 16 Oct 2004 03:27:13 GMT, Gordon Zola
wrote:

... turn off ... the flash. :-/


Yeah, one guy could wreck it for everyone. :-)


Unless you've got a flash with a guide number of 250 thousand miles........


  #10  
Old October 16th 04, 11:36 PM
Mike Fields
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Well, there are some lasers out there with sufficient power to illuminate
an area on the moon ... on the other hand, there is a great light source
that really does a good job, is nuclear powered and doesn't cost
anything. I believe the sun fits the bill ...


"William Graham" wrote in message
news:[email protected]_s54...

wrote in message
news
On Sat, 16 Oct 2004 03:27:13 GMT, Gordon Zola
wrote:

... turn off ... the flash. :-/


Yeah, one guy could wreck it for everyone. :-)


Unless you've got a flash with a guide number of 250 thousand

miles........




 




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