Wisentgehege (2019-08-31)
Photos taken with Sony A6300 and zoom lens 18-135.
Herrenhausen Illumination (August 2019)
Photos shot with Sony A6300 and Sony 18-135 zoom-lens in Hannover Herrenhäuser Gärten end of August from 21:00 to 22:00 (9-10 pm). It was already very dark and beyond the blue hour when the illumination started. Therefore the images are with stars in the sky and the...
Tulips in Berggarten Hannover (April 2019)
Photos shot with Sony A6300 and Sony 18-135 zoom-lens in Berggarten Hannover in April. This lens is not a macro lens and has no fast aperture. Thus the bokeh is a bit too harsh and the background not blurred out. Still with maximum focal length and closest distance...
Wisentgehege Springe (April 2019)
Wisentgehege Springe in April 2019. Shot with Sony A6300 and 18-135 mm. First time I used the lens. All shots were done with maximum focal length. The shutter speed for the birds in the falconary show was 1/2000s with ISO 1000-2000. Theses photos are thus with high...
Quiche Rezepte (Links)
Kürbis Ricotta Quiche Kürbis Ricotta Quiche (lecker.de) Anmerkungen: Wir lassen das Lachstatar grundsätzlich weg. Wir verwenden immer Hokkaido Kürbis. Muskatkürbis haben wir noch nicht probiert. Den Kürbis im Ofen 20 min garen. Nicht länger, sonst wird der Kürbis zu...
Zoo Hannover (April 2018)
Zoo Hannover in April 2018. Shot with Nikon D5100 and Nikon 55-300 mm. The lens is super sharp, even at 300 mm. Shutter Speed was high enough 1/400 or faster.
Berggarten Hannover (October 2018)
Photos shot with Nikon D5100 and Sigma 105mm f/2.8 macro lens in Berggarten Hannover in Oktober. Very few flowers were still in full blossom. Mainly aster and gras.
Astern und Diamantgras im Garten (Oktober 2018)
In the garden we have several flowers that blossom in the autumn. The Aster (Aster novae-angliae) and diamant gras (Calamagrostis brachytricha). Here are pictures of both, this time taken with my new Sony A6300 with the Sigma 30mm F2,8 DN. None of them are macros,...
Hannover Leuchtet (2018/11)
This photos were shot during the festival Hannover Leuchtet. I used my old Nikon D5100 and Kit Lens 18-105 mm since I do not have a remote trigger nor zoom lens for my new Sony A6300. Most photos were created by using the photo stacking technique to reduce noise and...
Quiche
Quiche Boden Quiche Boden aus Mürbeteig 250 g Mehl125 g Butter (kalt)1 Ei1 TL Salz Mehl, Salz, Butter in Stücken, 1-2 EL Wasser und ein Ei zunächst mit dem Knethaken eines Handrührers verrühren, danach mit den Händen zu einem glatten Teig verkneten. Der Teig muss eine...
Pfannkuchen
Pfannkuchen 250 g Weizenmehl4 Eier1 EL Zucker1 Pr. Salz500 ml Milch Eier mit Zucker, Salz und Milch mit einem Schneebesen schaumig schlagen.Dann das Mehl stückchenweise hinzufügen und immer darauf achten das keine Klumpen entstehen. Den Teig bei Zimmertemperatur 20-30...
LaTeX Thesis Template 3.2.5 released
A minor update of the LaTeX Thesis Template has been released. The documentation can be downloaded separately Changes The version is tested against a recent TeX Live 2018 (Version of September 2018). The updates contains the...
Kiesbeet anlegen
Wir haben bei uns im hinteren Teil des Gartens den Rasen durch ein Kiesbeet ersetzt. Grund ist, dass der Rasen dort im Schatten lag und die Fläche als Gehweg benutzt wurde. Das hat dazu geführt, dass der Rasen eingegangen ist und ein harter oder bei Regen schlammiger...
Fokusstacking with blue ball thistle (Echinops ritro)
Photos shot with Nikon D5100 and Sigma 105mm f/2.8 macro lens in my garden in July 2018. The focus depth is much too shallow to capture the whole thistle at once. Therefore I tried focus stacking. The focus was manually changed slightly, while...
Illumination in Herrenhäuser Gärten (July 2018)
Illumination in the Herrenhäuser Gärten (see here). The photos were taken with the Nikon D5100 and Kit 18-105 lens using a tripod. The exposure times were between a few and 25 seconds.
Tulips and spring flowers in Berggarten Hannover (04/2018)
Appeltree blossum (04/2018)
Appeltree blossum in my garden.
Wildpark bei Warstein im Bilsteintal
Visit to the park in the Bilstein valley.
Butterflies in Berggarten Hannover
Butterflies in Berggarten Hannover. This was a special in spring 2018: Schmetterlinge im Berggarten.
Hannover christmas city lights (12/2017)
Another attempt to catch the christmas lights in Hannover. This time using an ND filter to get really large exposure times (minutes) while keeping the aperture at normal values (8, 11, 16). People on the streets are thus blurred out mostly.
Aster novae-angliae ‘Andenken an Paul Gerber’ in my garden (10/2017)
Aster with 140 cm height. Photos shot with Nikon D5100 and Sigma 105mm f/2.8 macro lens in my garden.
Sunflower with bees
Poppy flowers (Mohnblumen)
Field of flowers near the village Nisdorf between Zingst and Stralsund
Owl at flight at a show in zoo Stralsund (06/2017)
Shooting of a flight of an owl at Zoo Stralsund. These birds fly fast and super silent. The problem for the camera (Nikon D5100) is that the shutter speed must be fast (1/1000s), the ISO high enough (ISO 400-800), and the autofocus must be very fast. Focussing is set...
Frogs at Wisentgehege in Springe
Frogs in a small lake at Wisentgehege in Springe
Allium aflatunense ‘Purple Sensation’ (in my garden)
Photos shot with Nikon D5100 and Sigma 105mm f/2.8 macro lens.
Tulips in Berggarten Hannover (03/2017)
Photos shot with Nikon D5100 and Sigma 105mm f/2.8 macro lens.
Butterflies in Steinhude
Butterflies at Steinhude: http://www.schmetterlingsfarmsteinhude.de/
Appel tree blossom
Moon image with exposure stacked photos
I found this video from Tony Northrup that explains how to create a moon picture with highly increased details The basic idea is that with exposure stacking the noise decreases. You can also view this as an algorithmic ISO decrease technique. The images I took were...
Cacti in Bergarten Hannover (02/2018)
Close shots of Cacti neadles in Berggarten Hannover.
Flowers in my garden (07/2016)
Photos shot with Nikon D5100 and Sigma 105mm f/2.8 macro lens in my garden.
LaTeX Thesis Template 3.2.4 released
A minor update of the LaTeX Thesis Template has been released. The documentation can be downloaded separately Upgrade If you are using an older version of the template and want to upgrade to this newer version you should do the...
Berggarten (04/2016)
Spring in Bergarten Hannover.
LaTeX Thesis Template 3.2.3 released
A minor update of the LaTeX Thesis Template has been released. The documentation can be downloaded separately Upgrade If you are using an older version of the template and want to upgrade to this newer version you should do the...
Moon (10/2015)
Photos shot with Nikon D5100 and Nikon 55-300mm lens at 300 mm with tripod.
Maschseefest 2015
Photos shot with Nikon D5100 and Kit Lens 18-105 mm at Maschsee in Hannover during Maschseefest 2015 at night.
Berggarten (08/2015)
Photos shot with Sigma 105mm f/2.8 macro lens in Berggarten Hannover.
Zoo bird portraits
Hannover Weihnachtsbeleuchtung (01/2015)
Hannover bei Nacht
First trials of night photography in Hannover. The occasion was the photo seminar "Hannover bei Nacht: Architektur- und Stadtfotografie" organised by Foto Haas in Hannover. All shots were taken with ISO 100 and a tripod. The aperture was set such that high exposure...
Hannover christmas lights (11/2014)
These shots were taken during the night photography course
Wildpark near Bad Segeberg (08/2014)
Berggarten (07/2014)
Zoo (07/2014)
LaTeX Thesis Template 3.2.2 released
A minor update of the LaTeX Thesis Template has been released. The documentation can be downloaded separately Upgrade If you are using an older version of the template and want to upgrade to this newer version you should do the...
Berggarten (06/2014)
Zoo (05/2014)
Bird at high altitude
This flying bird was photographed while flying at a high altitude near the town Brilon. The photos were taken with the 55-300 mm lens from Nikon at 300 mm. The photos need to be cropped by a factor of 20.
Hannover Bergarten in the spring
These are picture from the Hanover Berggarten.
Husumer Krokusblüte
These are picture from the the crocus bloom (Krokusblüte) in Husum. The white flowers are Märzglöckchen
LaTeX Thesis Template 3.2.1 released
A minor update of the LaTeX Thesis Template has been released. The documentation can be downloaded separately The version is tested against a recent TeX Live 2013 (Version of January 2014). The updates contains mainly the...
Weihnachten
These are picture from our christmas tree.
Dahlia
These are picture from the autumn flower Dahlia taken from in the living room. I basically wanted to play with the aperture depended blur effect.
Chilis 2013
These are the Chilis of 2013. In contrast to previous years I grew only three types and placed them on the balcony. The plants grew 60-70 cm tall and needed to be tied to sticks after the chilis grew to prevent them from falling down. The red ones are hardly hot, but...
Maschseefest 2013
These images were taken at night at the Maschseefest in Hannover. The view is towards the north side of the sea. Originally the idea was to create HDR images. However I arrived too late, so that the acquisition times were in the range of several seconds. This meant...
Flowers in the Hill Garden (Hannover Herrenhausen)
Here some flowers taken in the Hill Garden, a botanical garden belonging to the gardens of Herrenhausen:
HDR image of the town hall in Hannover
My first attempt with HDR image with the New Town Hall in Hanover at about 23:00. The exposure times, however, were so long (5, 10, 20 seconds) that the leaves are all washed out in the wind and cause ghosting in the resulting image. The second image shows a normal...
LaTeX Thesis Template released
A few days ago I released a beta Version of my LaTeX-Thesis-Template on code.google.com. This Version is complete and tested with TeX Live 2013 on Windows 7, 64 bit. However since it has been completely rewritten and only been tested by myself (using my phd-thesis)...
Rhododendron in the Berggarten
These images were taken in May in the Bergarten of Hannover Herrenhausen, which is full of Rhododendron flowers at that time.
Tulips
Tulips in the living room. The pictures might look like painted, but they were actually looking like this.
waitbar with cancel button
The following code is an example for a loop function with a waitbar that allows canceling of the loop with the cancel button: Note however that a waitbar consumes very much time. Depending on the code this can slow down the calculation significantly. if numel(indices)...
radiobuttons in a buttongroup
In matlab one has to place radiobuttons in a uibuttongroup to make them exclusively selectable. In the startup of the gui one can select the default selection and define a callback function set(handles.uibuttongroupView, 'SelectedObject', handles.radiobuttonPlotROI);...
enable zoom in gui
Matlab provides the function of making axes zoomable in a gui (zoom reference). In a matlab gui this is enable by using this code: hZoom = zoom; setAllowAxesZoom(hZoom,handles.axes,true); set(hZoom,'Motion','both','Enable','on');
change extension of filename
Very often I tend to save the results of a file under the same name, but with a modified extension. This code shows how to achieve this % change extension [~, ~, ext] = fileparts(FileName); FileName = strrep(FileName, ext, '-xyz.png'); If the file should be saved...
check if gui selection has changed
The callback of an ui element is called whenever the element has been modified. However this does not necessarily mean that the value of the element has changed. Here is an example where an action is only performed if the value has changed. The trick is to use a value...
matlab popupmenu (combobox)
The popupmenu of the matlab gui is based on the uicontrol class. Below is a sample code for its usage: % create text entries in menu colormapStr{1}= 'blue-red'; colormapStr{2}= 'red-blue'; colormapStr{3}= 'gray'; set(handles.popupmenuColorMap,...
Hannover christmas city lights (12/2012)
My first attempt to take night photos from the city lightning during christmas in Hannover.
Falconry at castle Cochem (10/2012)
Ein paar Tage in Dresden
Mitte August waren wir ein paar Tage in Dresden und haben uns die Altstadt, Semper Oper, Frauenkirche, Schloss Pillnitz und die Sächsische Schweiz angeschaut. Wir haben in der Neustadt in der Nähe des goldenen Reiters gewohnt und sind Abends häufig in der äußeren...
LaTeX-Einführung
Die folgenden Folien und Übungen wurden in einer zweitägigen Einführung von LaTeX verwendet. Die Zielausrichtung lag auf der Erstellung von einfachen Protokollen mit Ausblicken auf Themen, die bei Bachelor und Masterarbeiten relevant sind. [download...
pcolor and contour plot with different colormaps
Matlab does not allow to combine use more than one colormap in a figure. However there are some possibilities to get around this problem, which are presented in this article. Initialization and export of figure For all plots the same initialization for the data and...
plotyy with unequal tick locations for both datasets
In matlab the normal way to create plots with two y-axis is to use the command plotyy. This works quite simple, and creates equal tick locations for both data sets: xaxis = 0:0.1:25; y1 = linspace(12.1712,12.7679, length(xaxis)); y2 = linspace(0.3597,-28.7745,...
LaTeX-Workshop
Die folgenden Folien und Übungen dienten zur eintägigen Einführung von LaTeX für die Erstellung von Bachelor und Masterarbeiten. In einem Tag (Samstag von 10:00-16:00 Uhr) reicht natürlich nicht alle Grundlagen von LaTeX mit den...
Erstellung von Bachelor und Masterarbeiten mit LaTeX
Im Rahmen meiner Lehrverpflichtungen an der Leibniz Universität Hannover habe ich die folgende Vorlesung zur Erstellung von Bachelor und Masterarbeiten mit LaTeX gehalten Die Verlesung richtetete sich an Studenten mit...
Einführung in Bibliographien mit LaTeX, biblatex und biber.
Im Rahmen eines Arbeitsgruppenseminars der AG Morgner wurde der folgende Vortrag zur Einführung in Bibliographien mit LaTeX gehalten. Zielpublikum waren Masterstudenten und Doktoranden, die zuvor schon mit Bibtex gearbeitet hatten. [download...
pcolor plots with publication ready formating
Matlab has many possibilities to create plots even fancy ones. However its defaults are very seldom suitable to use the plots directly for a publication. The following minimal code demonstrates how to generate a pcolor plot for 2D data with x- and y-axis. The data was...
fast calculation of functions with two variables
If you come from the programming world of C/C++ or java or any other traditional programming languages you might fall into the trap of using for loops for the calculation of functions. This works as expected but it is much slower than what matlab can do. The following...
plotting a filled curve
A search on how to fill the area under a curve reveals that such questions are quite often asked. Here is the solution in a function file that I created for simplifying filled curve plots using matlabs fill function. function handle = filledcurve(x, y, zero,...
fast reading of structured text data with matlab
In the following I present a solution to read data from a textfile which has the number of x-values (columns) in the first line, the number of y-values (rows) in the second line and in all following lines the matrix with size x times y. The principle reading of the...
LaTeX-Vorlage für Protokolle
Neue LaTeX-Vorlage zur Erstellung von Labor-Protokollen: Die Vorlage beruht auf Koma Script (scrartcl) und ist für pdflatex ausgelegt (kein LuaTeX oder XeteX). Unter anderem werden diese Pakete verwendet: inputenc, grffile, fontenc, textcomp,...
LaTeX Einführung
Im Rahmen eines Workshops der jDPG Hannover wurde der folgende Vortrag zur Einführung in LaTeX gehalten: Das Publikum bestand aus Physik-Studenten des 2ten Semesters. Der Vortrag und die dazu abgehaltenen...
plotting tutorials
Here are some tutorials about plotting in matlab. (all original links except this are unfortunately dead): making pretty graphs
batch script for automatic backup using winrar
For a regular full backup of all my important data I am using a bash script on Linux. This is now an example to achieve the same under Windows 7 using batch scripting and winrar as the compressor. Zip files can not be used since this is limited in total number of...
Matlab figures – solving export problems
How to make a really beautiful and publishable graph with matlab is not easy but possible. It is very good descriped in this article making pretty graphs. However once you want to export your file you run into many problems, which are build in bugs of matlab, and have...
C++ Vortrag: Grundlagen und Objektorientierte Programmierung 2
Erneut werde ich einen Workshop über C++ halten. Diesmal habe ich die Grundlagen kurz gehalten und gehe dafür detailierter auf Klassen und Objektorientierte Programmierung ein. Das ganze umfasse 2 Stunden. Dabei werden ein paar praktische Übungen durchgeführt....
C++ Vortrag: Grundlagen und Objektorientierte Programmierung
Den folgenden Vortrag mit Titel "Grundlagen und Objektorientierte Programmierung" habe ich im Februar 2009 während eines mehrstündigen Workshops gehalten. Zwischendurch wurden noch praktische Übungen durchgeführt.
Compilation of Qt 4.6.3 under Windows 7 with phonon
Note: this is only usefull if you are using msvc 2005. For 2008 the dlls come with the installation, and with 2010 Qt 4.6.x does not compile anyway. In previous posts I have already described problems and solutions for the compilation of Qt with phonon. Here is my...
fixes for Qt plugin makefiles
There are many usefull Qt plugins, such as qwt, qextserialport, qxt and others. With a new major version of Qt, or a new version of a compiler I have to recompile the plugins to make sure everything is working well together. However many plugins are not compilable...
Windows SDK 7 messed up
I am trying to set up the Windows SDK environment for compilation of an other C++ project (Qt phonon library). However the script seems to be totally broken. It does not work and destroys the path variable. This is what the path looks like before anything is called:...
Chilis 2009
All Chilis of this year The total amount of chilies this year is rather low, and not all plants have grown successful, but we could try some really nice new kind of chilies. Agatha This chili is not really hot (scale 4) and taste...
Brutblatt Blüten
Im Mai hat unser Brutblatt geblüht. Er war inzwischen (mit Topf) ca. 1,80 Meter hoch und konnte nur noch mit einer Stange und an die Wand gelehnt stehen. Leider wurde die Pflanze auch unglaublich häßlich. Die Blätter unten sind alle abgefallen, so dass erst ab 1,2...
Holidays on Madeira
Reasons to go to Madeira Maybe you find something that is of special interest for you on this site. It is about comfortable weather, wonderfull walking routes, very good wine and food. Just keep on reading... Hotel We have been in the Quinta Bela São Tiago Hotel. It...
Books on Computational Physics
A list of recommended books A Survey of Computational PhysicsRubin H. Landau, Manuel José and Cristian C. BordeianuLanguage: Java An Introduction into Computational Physics (2nd edition)Tao PangLanguage: Java Introductory Computational PhysicsAndi Klein and Alexander...
Qt SpinBox Widget with Scientific Notation
QScienceSpinBox Since I started using Qt over a year ago I have been asking and looking for a Qt widget that can handle numbers in a scientific notation. Unfortunately Qt Software does not offer such a solution nor is it trivial to implement. With the hints I got in...
free Qt Visual Studio Integration
Volker Wiendl has released a new Version of his VsQtAddin Visual Studio Plugin: Download (Version for VS 2005) In case you have a previous installed version uninstall it first, and make sure no component is remaining on the system. You may also run...
Multifunktionsdrucker unter Linux
[TOC] alle Angaben ohne Gewähr! Übersicht Drucker Preis Sprache Treiber Duplex Xerox Phaser 6115MFP 835 GDI foo2lava ja Samsung CLX-3175FW 499 GDI Samung, (SpliX, foo2qpdl) nein Brother DCP-9045CDN 799 PCL6 (emul), PS 3 (emul) ? ja HP CM1312nfi MFP 449 PCL6, PS 3...
Installation of Fonts in Miktex
I have several Type1 fonts which need to be installed such that LaTeX knows about them. To achive this under Miktex you have to follow these steps: Setup you localtexmf tree with the fonts or copy your localtexmf tree from a different installation into the...
convert Images in batch process
Converting images in a batch process is not difficult in general, but approaches like this fail at filenames/directories with spaces #!/bin/sh for file in $(find -iname *.bmp); do mogrify -verbose -format png $file; done The solution is to use 'read' in the following...
Alternatives Syntaxhighlighting
Hier das neue Syntaxhighlighting von LaTeX in geshi % Beispieldokument \documentclass[a4paper, 11pt,german]{scrartcl} \usepackage{lmodern} \usepackage{textcomp} \usepackage[german]{babel} \usepackage[T1]{fontenc} \usepackage[latin1]{inputenc} \usepackage{graphicx}...