By Jürgen Tenckhoff, 25 September, 2020 White light holograms (argon laser) This post shows a white light hologram that was recorded with an argon laser. A flashlight with almost parallel light is sufficient for viewing. Country Germany Copied to clipboard
By Jürgen Tenckhoff, 25 September, 2020 Holography with argon laser White light holograms are generated with coherent laser light, but they meet lower coherence conditions when viewing. Country Germany Copied to clipboard
By Jürgen Tenckhoff, 25 September, 2020 Half a hologram - all the information Is there really all the information of a recorded motif in every fragment of a hologram? Here we examine a broken hologram. Country Germany Copied to clipboard
By Jürgen Tenckhoff, 24 September, 2020 Recording techique: "Rainbow holograms" The technique for generating rainbow holograms was developed in 1968 by Dr. Stephen A. Benton designed. Country Germany Copied to clipboard
By Jürgen Tenckhoff, 24 September, 2020 Holography for science and art Holographic recording techniques not only record the amplitude of light rays but also their phase. Country Germany Copied to clipboard
By Jürgen Tenckhoff, 5 August, 2020 The hurricane eye of Jupiter over Hennef To the right of Saturn, the radiantly bright Jupiter is currently appearing in the south above the horizon. Country Germany Copied to clipboard
By Jürgen Tenckhoff, 5 August, 2020 Saturn's rings over Hennef Can you photograph the Saturn rings with a digital camera and a telephoto lens? Country Germany Copied to clipboard
By Jürgen Tenckhoff, 22 July, 2020 Comet Neowise above Hennef Comet C / 2020 F3, Neowise, was difficult to photograph over Hennef. Haze and light pollution initially thwarted several attempts Country Germany Copied to clipboard
By Jürgen Tenckhoff, 20 July, 2020 Photo technique: Color-key With color-key recordings, one object of the picture is left in its color, while the rest of the picture is displayed in shades of gray. Country Romania Copied to clipboard
By Jürgen Tenckhoff, 11 July, 2020 Photo technique: "High Dynamic Range (HDR)" The HDR display technology is primarily intended to compensate for the limited dynamic ranges of digital sensors. Country Germany Copied to clipboard