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Atmospheric Optics

Atmospheric Optics

untitled Samsung Galaxy Tab 7.7: heldere kijk op draagbaarheid De Samsung Galaxy Tab 7.7 onderscheidt zich ten opzichte van andere tablets door de toevoeging van een Super Amoled Plus scherm. Dit zorgt niet alleen voor een groter kleurenspectrum, maar ook voor een extra helder beeld. De tablet wordt aangedreven door een 1,4 Ghz Dual Core processor. Gebruikersinterface De Samsung Galaxy Tab 7.7 heeft het speciaal voor de 7-inch tablet ontwikkelde Android Honeycomb 3.2 besturingssysteem. Entertainment in overvloed De Samsung Galaxy Tab 7.7 heeft 16 GB intern geheugen en is uit te breiden met micro-SD kaarten.

What causes tornadoes? Americans know tornadoes like no one else. The U.S. averages at least 10 times more twisters each year than any other country on Earth, and their intensity is infamous — the worst can be a mile wide, rotate at 300 mph and plow along at 70 mph. Yet despite being target practice for these atmospheric power drills, America's tornado mythos is still cloaked in mystery and misunderstanding. That's understandable, considering tornadoes' stealthy nature — sudden appearances, erratic behavior and brief lifespans make them elusive subjects to study — but science has nonetheless learned a lot in recent decades. Tornadoes can occur any time of year, but they wage all-out war on the U.S. during spring and summer. How tornadoes work Tornadoes produce the strongest winds on Earth, but they owe all their energy to the chaotic clouds that birth them. Before a thunderstorm forms, winds begin quickly changing speed and direction. Where and when tornadoes strike How to survive a tornado

SpaceWeather.com -- News and information about meteor showers, solar flares, auroras, and near-Earth asteroids foto cursussen Cursussen & info Fotografie Nederlands Fotoroos fotolessen : Seniorennet.be mailgroep fotografie: Leon Volders/ Chronax : ga naar "Nuttig" rechts staan de cursussen (Lichtdrukmaal) in pdf formaat :zeer interessant en leerzaam!! Raym's fotosite tips.html Idemdito : Basisbegrippen fotografie : Heinpragt: Fotografie Wim Van Velzen: Strobist : Henk backer : toelichting ivm histogram (nederlands) ............................ Karel Titeca: fotografie in mensentaal: Engels Plot of the Inner Solar System The plot below shows the current location of the major planets (Mercury through Jupiter) and the minor planets that are in the inner region of the solar system. Also available is a view of the innermost region of the solar system. The plot is of the same form as the plot on this page. An animated version of this plot is available from our Animations page. This plot must not be reproduced without the express written consent of the Minor Planet Center. The orbits of the major planets are shown in light blue: the current location of the major planets is indicated by large colored dots. In this view, objects in direct orbits (most of the objects in this plot) move counterclockwise and the vernal equinox is towards the right. Back to minor planet lists and comet lists.

Gitzo GT1542T Safari Tripod 4sec. - Statieven & Monopods - Foto Gitzo GT1542T Safari Tripod 4sec. GT1542T tripod combines the compactness and light weight of the Gitzo Traveler System with the stability and size of a regular Mountaineer Series 1 tripod. It is dedicated to the high-end user seeking for a highly portable support with no compromise. Groud level set - This new feature allows you to remove the centre column to save weight and get the camera closer to the ground. G-lock - G-Lock is the new Gitzo leg locking system. Reversible column - The rapid column can easily be inverted for an alternative shooting angle or low level macro work. Hook - This built-in accessory allows you to hang a stabilizing weight (e.g. a full camera bag or a sand/water bag) from the bottom of the tripod centre column. Power disk - The new tripod upper disc is called 'Power Disc'. ALR - We have introduced a new Anti Leg Rotation system, which means the tripod can be opened in less than 15 seconds. Lees minder

Astronomy Picture of the Day Photographing Textiles | c u r i o u s w e a v e r I love to photograph my own textiles and here is the method I have devised afer years of trial and error. It’s another good excuse to deeply look at textiles. I like low, natural lighting so I always photograph on a bright but cloudy day. This is more for Australian conditions as the light here is very bright and throws strong, deep shadows. I just set up near a window, which sometimes has to have greaseproof paper taped to it to soften the light. I use a good digital SLR camera with a tripod and remote shutter release. I use a manual setting on the camera with the aperture set at F16. To make sure the exposure is good I take a photo either side of the chosen setting (called bracketing).

HDR Bulb mode activation code screenshot Last week my friend Hans and I spent some time in my lab exploring which features of his Nikon D300 are available via PTP protocol. Hans is working on extended range HDR-capable intervalometer and he needed to find out a way to switch his camera into bulb mode using Arduino board and USB Host shield. After we finished I realized that while bulb mode is not tricky to activate, it is not obvious either and no hints exist in the code and examples showing how to do this. This short article is intended to fill the void. In PTP, shooting parameters, such as shutter speed, aperture, ISO, etc. are changed by setting certain device property. The property value list retrieval mechanism is slightly different for different cameras. If you “step up” shutter speed on Nikon DSLR manually, the last 2 values will be 30 seconds and bulb.

Long-exposure night HDR photography with arduino (aka bulb mode bracketing) » New York Panorama I do bracket all my night photography, for various reasons: for exposure blending, noise reduction, dynamic range extension etc etc. Unfortunately, Canon thinks that all photographers only need +-2EV brackets, unless you own one of the very big Canons, and that 30 seconds is also enough. Unfortunately, it isn’t enough for some of my night panoramas, and I was looking into ways to fix it (that included pleading to Canon, but we all know how far that goes). So I decided to build my own long-exposure bracket controller, based on the arduino platform, with an Nokia LCD to actually have an user interface, other than a red button, write my own piece of software and test it last night… I call the gadget “Bracketmeister 0.32″ for now. It works like a charm. Update: More info, diagram, images and source code after the break: Download Bracketmeister 0.32 If you are improving the code, it would be great if you share the changes with me again, to keep it open source. Rating: 4.4/5 (21 votes cast)

Canon bulb-mode HDR controller - powered by Arduino | jasonhooker.com One project I'm working on is a bulb-mode HDR controller for Canon DSLRs (also known as bulb mode bracketing). Based on a bulb mode bracketing project by Joergen over at newyorkpanorama.com, I'm using a 16x2 LCD module from NuElectronics for user interaction, sitting on top of a Freeduino Arduino clone. The hardware is complete (apart from the shutter release switching transistor and connector). The buttons on the front panel are wired in parallel with the buttons on the LCD board, which in turn plugs directly on top of the Freeduino main board. As with Joergen's design, I'll be using a small transistor to provide the shutter release switching. So far, the sketch (Arduino software) handles user interaction with the buttons and the LCD screen, allowing the user to select the EV range, number of exposures and the time for the shortest exposure. Once I have the sketch completed, I'll post the code.

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