Flats, EL panels and Field Illumination

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Re: Flats, EL panels and Field Illumination

Postby Brumtaffy » Sun Jan 20, 2013 4:54 pm

Dion wrote:Martin would be your man for that, i think he uses earlsman too, I think some salt may be needed with some of the 'expert' opinions.


It is true that this is taken off the Gerdneumann website, so I'm keen to know how important the difference is likely to be, this is what they say at http://www.gerdneumann.net/english/astr ... rview.html

Color
The light emanating from the Aurora Flatfield Panels is slightly blueish-white. Most panels from other suppliers seem to provide pure white light (as perceived by the human eye) but the light is in fact made of discrete emission lines. Due to this, the flat field EL panels from most other suppliers are not suitable for narrowband emission line filters. We have tested the products of all EL sheet manufacturers worldwide and selected these particular EL foils for our Aurora Flatfield Panels because they are the best for astronomical applications. The spectrum of the Aurora Flatfield Panels is not made of some emission lines. Intstead, the EL material used in the Aurora Flatfield Panel has a very broad, continuous emission across the whole spectrum. This fact is what makes our Aurora Flatfield Panels great for narrowband emission line filters. The three spectra below illustrate the difference between our continuous spectrum EL panels and typical EL panels with light generated with discrete emission lines present.

[they show pictures of spectra here, comparing different types]

You can see the very broad emission of the new Aurora Flatfield Panel which is very well suited for the work with DSLR and cooled CCD cameras, working with broadband or RGB filter and for work with narrow band emission line filters as well.


Cost wise, there probably isn't all that much in in for me, bit less for Earlsmann, but then a bit of DIY involved.

Will any of the exhibitors at the European Astronomy Conference in a couple of weeks be likely to be showing EL panels?

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Re: Flats, EL panels and Field Illumination

Postby Dion » Mon Jan 21, 2013 2:19 am

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Re: Flats, EL panels

Postby sgb2164 » Tue Dec 31, 2013 3:04 pm

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Re: Flats, EL panels and Field Illumination

Postby martin_h » Sun Jan 05, 2014 6:37 pm

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Re: Flats, EL panels

Postby martin_h » Sun Jan 05, 2014 7:06 pm

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Re: Flats, EL panels and Field Illumination

Postby sgb2164 » Fri Jan 10, 2014 4:14 pm

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Re: Flats, EL panels and Field Illumination

Postby martin_h » Fri Jan 10, 2014 9:24 pm

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Re: Flats, EL panels and Field Illumination

Postby Dion » Sat Jan 11, 2014 4:48 am

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Re: Flats, EL panels and Field Illumination

Postby sgb2164 » Sat Apr 19, 2014 2:42 pm

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Re: Flats, EL panels and Field Illumination

Postby GanymedRN » Sat Apr 19, 2014 9:20 pm

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