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| WerteDaten aus Liniengraphik auslesen https://forum.vdsastro.de/viewtopic.php?t=4744 |
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| Autor: | Rainer Borchmann [ 17. April 2017, 03:39:48 AM ] | ||
| Betreff des Beitrags: | WerteDaten aus Liniengraphik auslesen | ||
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
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| Autor: | Martin Dubs [ 17. April 2017, 09:57:35 AM ] |
| Betreff des Beitrags: | Re: WerteDaten aus Liniengraphik auslesen |
Hallo Rainer, Du kannst Tracer verwenden: https://sites.google.com/site/kalypsosi ... software-1 Gruss, Martin |
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| Autor: | Rainer Borchmann [ 17. April 2017, 12:42:47 PM ] |
| Betreff des Beitrags: | Re: WerteDaten aus Liniengraphik auslesen |
Zitat: 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 |
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| Autor: | Robin Leadbeater [ 17. April 2017, 22:50:58 PM ] |
| Betreff des Beitrags: | Re: WerteDaten aus Liniengraphik auslesen |
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 |
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| Autor: | Robin Leadbeater [ 17. April 2017, 23:12:43 PM ] |
| Betreff des Beitrags: | Re: WerteDaten aus Liniengraphik auslesen |
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 |
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| Autor: | Rainer Borchmann [ 18. April 2017, 01:25:54 AM ] |
| Betreff des Beitrags: | Re: WerteDaten aus Liniengraphik auslesen |
Zitat: Rainer,
Hello Robin,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 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 |
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| Autor: | Ken Harrison [ 18. April 2017, 02:10:02 AM ] |
| Betreff des Beitrags: | Re: Re: WerteDaten aus Liniengraphik auslesen |
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 |
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| Autor: | Rainer Borchmann [ 18. April 2017, 09:25:08 AM ] |
| Betreff des Beitrags: | Re: WerteDaten aus Liniengraphik auslesen |
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. |
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| Autor: | Martin Dubs [ 18. April 2017, 15:38:50 PM ] |
| Betreff des Beitrags: | Re: WerteDaten aus Liniengraphik auslesen |
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 |
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