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M51 - 28/02/2007

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17 years 9 months ago #42026 by Gary Clarke
Replied by Gary Clarke on topic Re: M51 - 28/02/2007
Thanks Michael. If you don't mind I might give you a call, if I get into trouble setting up. Cant wait for d-day.

Regards,

Gary.
Clonee Observatory D.15.

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17 years 9 months ago #42027 by michaeloconnell
Replied by michaeloconnell on topic Re: M51 - 28/02/2007
FWIW, I came across this recently.
r0k.us/graphics/images/64kSnake.png
Contain a chart with 64,000 shades of grey. One should be able to see all the boxes except for a single narrow line at the very edges which are black. As the image is very large in size, one needs to click on it to zoom in when viewed in a browser.

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17 years 9 months ago #42030 by voyager
Replied by voyager on topic Re: M51 - 28/02/2007

FWIW, I came across this recently.
r0k.us/graphics/images/64kSnake.png
Contain a chart with 64,000 shades of grey. One should be able to see all the boxes except for a single narrow line at the very edges which are black. As the image is very large in size, one needs to click on it to zoom in when viewed in a browser.


Just so I understand this right, if I can make out all the boxes my monitor is up to scratch?

Bart.

My Home Page - www.bartbusschots.ie

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17 years 9 months ago #42033 by michaeloconnell
Replied by michaeloconnell on topic Re: M51 - 28/02/2007
Yes. However, you want the outside row to be jet black - not a grey. If it is grey, the monitor is probably set too bright. Conversely, if you see a very thick black row on the outside, the brightness may be too low or the contrast needs adjustment.

Here's a simpler one to look at. Here, a different shade of grey is assigned to each letter of the alphabet. You should see a row of boxes each subtly different to another. If at any stage you see a rectangle instead of a box, then the monitor may need adjustment as it's then displaying two different shades of grey as one. Hope this makes sense.


Hope this helps.

Regards,

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17 years 9 months ago #42039 by voyager
Replied by voyager on topic Re: M51 - 28/02/2007

Yes. However, you want the outside row to be jet black - not a grey. If it is grey, the monitor is probably set too bright. Conversely, if you see a very thick black row on the outside, the brightness may be too low or the contrast needs adjustment.

Here's a simpler one to look at. Here, a different shade of grey is assigned to each letter of the alphabet. You should see a row of boxes each subtly different to another. If at any stage you see a rectangle instead of a box, then the monitor may need adjustment as it's then displaying two different shades of grey as one. Hope this makes sense.



Hope this helps.

Regards,


unfortunately that picture didn't come out :(

My Home Page - www.bartbusschots.ie

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17 years 9 months ago #42044 by michaeloconnell
Replied by michaeloconnell on topic Re: M51 - 28/02/2007
Hmmm...strange...I can see the image linked...

Anyway, here's a link to a web page containing it and others:
w4zt.com/screen/

Regards,

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