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====== DADOS Calibration Lamp ======

☚ [[pispectro_en|🇬🇧 English]] | [[0x0019|🇩🇪 German]]

//The DADOS calibration lamp is cost-effective and typically used for calibrating astronomical spectra (https://www.baader-planetarium.com/en/dados-neon-calibration-lamp.html).  
It emits visually noticeable orange spectral lines with known wavelengths. Once these lines are identified, a quite accurate calibration can be performed, as shown below.//

<note important>
{{:pispectro:neon_3.jpg?200 |}} The calibration lamp does not light up when exposed to external light. It has a twilight switch that only activates it in sufficient darkness. Therefore, a holder (3D-printed) was developed so that the lamp can be used with the spectrometer.
</note>

===== DADOS Spectrum with piSpectro =====

^ **<color #00a2e8>pi</color><color #22b14c>Scec</color><color #ffc90e>tros</color><color #ff7f27>co</color><color #ed1c24>pe</color>**  // Spectroscope and DADOS calibration lamp with holder //^
|{{ :pispectro:dados-pi.png?600 |}}|
|A 3D-printed holder securely and precisely holds the DADOS calibration lamp on the spectroscope – this helps ensure quick and reliable calibration.|

^ **<color #00a2e8>pi</color><color #22b14c>Scec</color><color #ffc90e>tros</color><color #ff7f27>co</color><color #ed1c24>pe</color>**  // Spectroscope and DADOS calibration lamp with holder //^
|{{ :pispectro:dados-freecad.png?200 |}}|
|FreeCAD view of the holder.|

==== DADOS Reference Spectrum ====

Based on the published spectral lines from Baader Planetarium as well as precise neon spectral data from NIST, **a compact reference database for the DADOS calibration lamp was created**. This can be imported into your own spectra when needed to allow quick and reliable calibration.

The corresponding reference spectrum is shown in the image below. It serves as a visual guide and facilitates the identification of characteristic neon lines, which is especially helpful for the initial calibration.

==== DADOS piSpectro ====

----

| piSpectro calibration with DADOS |
|{{ :pispectro:dados-cal-01.png?600 |}}|
|{{ :pispectro:dados-cal-06.png?800 |}}|
|Shown is the piSpectro calibration with the associated reference spectrum. For this, the DADOS reference spectrum was overlaid to facilitate the calibration. Then calibration was performed. A very good match between the theoretical line spectrum and the actually recorded spectrum can be seen.|

===== Additional Sources =====

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Information from the Baader homepage  
{{ :pispectro:neon_1.png?700 |}}

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//Calibration of an energy-saving lamp and a neon lamp as calibration light sources for the DADOS slit spectrograph  
Thesis Kopernikus Gymnasium School Year 2008/2009//  
{{ :pispectro:neon-2.png?700 |}}