Forum der Vereinigung der Sternfreunde

Hallo,
ich möchte die Werte/Daten aus einer Liniengraphik auslesen.
Aus einer Responsekurve eines Canon Chips möchte ich die Werte einer Kurve Pixel für Pixel
in eine Tabelle überführen. Das geht sicherlich per selbstgeschriebenen Programm, aber mit
entsprechendenem Aufwand. Vielleicht hat jemand eine Software in der Schublade, die sowas
machen kann? Die Grafik stammt von: http://www.threehillsobservatory.co.uk von Robin Leadbeater.


Danke
Rainer Borchmann

Hallo Rainer,
Du kannst Tracer verwenden:
https://sites.google.com/site/kalypsosi ... software-1

Gruss, Martin

Hallo Martin,
großartig, das ist genau das, was ich gesucht habe.

Dir und den Deinen wünsche ich einen schönen Ostermontag.
Tschüss, Rainer

Hello Rainer,

Note that graph is not just the camera sensor response. it is the whole instrument response (Star Analyser 100 grating + camera lens optics + atmospheric absorption + sensor response). It was just to demonstrate the difference between mono and colour sensors and will be different for different gratings and atmospheric extinction.

Cheers
Robin

Rainer,

If you want the QE response of the camera sensor only, this graph by Christian Buil might be better
http://www.astrosurf.com/buil/us/digit/spectre_4.gif
from this page
http://www.astrosurf.com/buil/us/digit/spectra.htm
It is a direct measurement of the sensor response for a Canon 10D/300D

Cheers
Robin

Hello Robin,
thank you for your clarification. Did you know, where can i get curve of the sensor from the Canon 350 D?

Have a nice week

Rainer

Google:
"dslr quantum efficiency" and search on "Images" - there are pages of data.

On 18 April 2017 at 09:25, Rainer Borchmann <fg-spek-tech@vdsastro.de> wrote:
Link zum neuen Beitrag: http://forum.vdsastro.de/viewtopic.php?t=4744#p29371

> Robin Leadbeater wrote:

> Rainer,

>

> If you want the QE response of the camera sensor only, this graph by

> Christian Buil might be better

> http://www.astrosurf.com/buil/us/digit/spectre_4.gif

> from this page

> http://www.astrosurf.com/buil/us/digit/spectra.htm

> It is a direct measurement of the sensor response for a Canon

> 10D/300D

>

> Cheers

> Robin

Hello Robin,

thank you for your clarification. Did you know, where can i get curve

of the sensor from the Canon 350 D?

Have a nice week

[color="#888888]

Rainer

[/color]

--

"Astronomical Spectroscopy - The Final Frontier" - to boldly go where few amateurs have gone before....
https://groups.yahoo.com/neo/groups/ast ... scopy/info

http://astronomicalspectroscopy.com

"Astronomical Spectroscopy for Amateurs" 

"Grating Spectroscopes - How to use them"
"Imaging Sunlight - using a digital spectroheliograph" - Springer

_________________
" Astronomical Spectroscopy for Amateurs" - Springer

Hello Ken,
Yes, I have already searched for and was found some results.
But really reputable sources eg. From Canon or a spectroscopist i would have liked to find
And on the other hand, the response of the combination of CCD sensor and star analyzer is
also interesting to know

Thank you very much.

Rainer.

Hallo Rainer,

vielleicht hilft Dir diese Seite weiter:
http://www.astrosurf.com/buil/350d/350d.htm
Da steckt aber noch die Lampenintensität drin, Achtung!

Gruss, Martin