File:Sun projection with spotting-scope large.jpg

Summary[edit]

English:

• Description: Ocular projection of the sun with large sunspots using a spotting scope (50mm diameter, 45x magnification) and a sheet of paper approx. 30 cm from the ocular. The apparent granulation is due to that of the paper rather than the photospheric granulation. The middle-edge-variation is clearly visible, but may by somewhat overemphasized by slightly inhomogeneous illumination of the projection. (Larger version, since recommended in Wikipedia for printing)
• Site and date: Bonn, July 22, 2004, approx. 18 CEST (16 GMT)
• Instruments and Software: 15-45x 50mm spotting scope, digital camera, The GIMP
• Photographer: SiriusB
• Other version(s): Image:Sun projection with spotting-scope.jpg (reduced size, larger margins), Image:Sun projection with spotting-scope v0.jpg (1 month before this, but less quality)

Deutsch:

• Beschreibung: Okularprojektion mit Zoom-Spektiv Papier (45x, Entfernung ca. 30 cm) in Bonn, am 22. Juli 2004, ca. 18 Uhr MESZ, abfotografiert und nachbearbeitet (aufgerichtet, Kontrast). Die erkennbare "Körnung" stammt eher vom Papier als von der Granulation der Photosphäre. Die erkennbare Randverdunklung wird durch die nicht ganz homogene Ausleuchtung überlagert und evtl. geringfügig überbetont. Weiteres Beispiel für einfache Sonnenbeobachtung.
• Instrumente: Bresser Zoom-Spektiv 15-45x50mm (45x eingestellt), Buchinnendeckel als Projektionsfläche, Digitalkamera JD 4.1XZ3, The GIMP zur Nachbearbeitung
• Fotograf: SiriusB
• Andere Versionen: Image:Sun projection with spotting-scope.jpg (etwas kleiner, mehr Rand, weniger bearbeitet), Image:Sun projection with spotting-scope v0.jpg (1 Monat zuvor, aber geringerer Qualität)

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