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Is it Important Mastering Basic Astronomy? Having sufficient astrophoto-graphy equipment is not enough for shooting session. The basic knowledge of astronomy about sky map, coordinate, and cons-tellation is needed to recog-nize the name, type and position of the objects. Understanding the sky map and coordinate system will give us information about when and where DSO entering view zone, the estimation of position, then followed by observation using telescope to find the exact position when it’s already on the view zone.

It is not difficult, the information of DSO position can be acquired by using sky map software available freely on internet and can be accessed from a desktop/laptop, PDA, or smartphone.

After we discover the DSO position, then we can start shooting. A catalog contained of DSO list and detailed information about the objects can be found easily. For instance, Messier Object catalog consisting of 110 objects, such as galaxy, cluster, and nebula with various position and magnitude level.

Constellation is the easiest guide for discovering objects, because commonly DSO position is connected with the constellation where the object can be found. For example, Orion Nebula (M42; Messier Object number 42) lies on Orion Constellation. How do we find Orion? Use a star map or star chart application, so we will find its position and configuration. Where is the Perfect Location for Shooting? As long as the sky is clear without cloud, the perfect place could be anywhere, provided that it is free from light pollution. Out town, countryside, hill top and so on can be used as the shooting location.

However, it doesn’t mean that the shooting can not be executed in the city. It can be executed by using a filter with the ability to minimize artificial light (street light, building light, etc). If you don’t use a filter, the process of eliminating light pollution can be done on the digital image processing. How do We Take the Photograph? The photographing process in astrophotography for DSO with low light intensity is different from a common photography.

The duration of shutter speed is longer (more than 10 seconds to tens minutes, even hours), with ISO more or equivalent to 400, and must be taken in more than one shot then combined it with the process of stacking and aligning using a software for astrophotography. Each shot is called as subframe or subs. The greater amount of subs then noise resulted during the stacking process and aligning will be lower, besides that it gives a greater data accumulation to increase the detail of DSO. Commonly, all of digital or analog SLR can be used for astrophotography with the additional adapter and cable shutter release for bulb.

Does It Need a Digital Image Processing? In astrophotography, digital image processing is something that can not be ignored. A photograph produced by camera still needs digital processing before beingshown. Digital image processing is needed to give the perfect final touch. In astrophotography processing, the functions used in digital image processing is not different from other photography. It differs in the case of stacking and aligning process which only can be done by special application for astrophotography (Iris, Registax, AstroArt, DSS, MaximDL, and others).

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Are you looking to start your own photography business, but you’re not sure what you need as far as equipment goes.  There are a number of equipment items that you need to become a successful photography and you can make your start with just a few items and a little bit of hard work.

The most important item of course is the camera, which without this piece of equipment you wouldn’t be able to call yourself a photographer.  The most commonly purchase type of camera for the photography business is the SLR digital camera.  These types of digital cameras are capable of producing the highest quality pictures possible and can be the key item to running a successful photography business.  You’ll want to consider purchasing a high powered digital camera to be able to get the best quality which is going to be the most impressive to your clients.  After all, they want the best pictures, and SLR digital cameras are going to help you give them that.

Another piece of equipment that is also very important in running a successful photography business, especially if you’re taking a lot of portraits, is back drops.  A good background is just as important as the quality of the picture, which is where back drops come into play.  They provide the background for the picture so you should have a variety of different styles and colors on hand to be able to provide your client with a variety of options.

Finally, another important piece of equipment that you’ll want to purchase for your picture taking activities is lighting equipment.  Stand lights, backlights, and other types of lights all can help you take a high quality picture in a portrait setting.  Improper lighting can ruin a picture and you’ll likely lose clients if you continually produce portraits with poor lighting conditions.

These are all important pieces of equipment that can help get your photography business rolling and if you have to start somewhere, then you’ll want to start with these.  As you become more and more successful, you can add more and more equipment to your inventory which will help you become more successful as a photographer.

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Why Lenses Are So Important When Buying A New Camera

When people shop for a Digital SLR Camera, they often forget or skip the camera\’s important part: lenses. These Camera Lenses are the digital cameras \”eye,\”. Lens determine how and what the camera will see, how it will see the subject and how good this view is passed onto the camera\’s sensor chip in recording. For me, camera lenses are as brushes of painters, medium strokes, broad strokes, small details brushes and all purpose brushes. There are a lot of things to learn with digital slr cameras lenses and the article will give a basic outline for understanding these. The next sections do explain basic types used in digital SLR lenses, the way they work, also how to choose them. Focal Length: In a digital SLR camera, this measures the distance from the lens and the sensor, as measured in millimeters. The lenses can be categorised in subgroups: wide angle, prime, macro, zoom lenses and telephoto. Thelens are rated with regard to speed or f-stop. One example is a 1.4F 80mm lens or a F2.0 50mm lens. We will explain later this part in the article. Prime Lenses: are lenses with fixed focal length: a 50mm 1.4f lens. In order to zoom using these lenses, one needs to use its feet and get farther away from or closer to the subject. Usually prime lenses are faster and sharper then the zoom lenses. For people on a budget, they can buy some good used older prime lenses at eBay or from the local camera shop. Macro Lenses: Are seen as detail brushes. These enable the photographer to get close and personal to the subject. Macro lenses are used in extreme close ups and on small objects usually like pennies, daisies, or food, but are not limited for these kind of subjects. Some examples include 100mm and 50mm macros. Also they are great in photos that are selective focus types. Wide-angle Lenses: These are seen as broad stroke brushes; Their short focal length is good because it has a visual effect described as \”pushing\” your subject away from photographer and to make it look smaller. There is one problem with these wide-angle lenses, and this is also known as convergence, which is a distortion which makes some vertical structures to appear as leaning towards the center of its frame. Examples include: 17MM, 28mm, 15mm or 24mm lenses. Normal Lenses: These ones try to copy how human eye is seeing and are also extremely versatile. They are all purpose brushes, somewhere in the range of wide angle and telephoto. Normal lenses: 65mm; 50mm, 35mm, also some consider the 80mm a normal. Telephoto Lenses: They have long focal lengths more than 100mm, and are called also telephoto lenses. Long focal length seem to bring your subject closer, and to increase the size of the subject in a frame. Zoom Lenses: They are special in the sense that can be versatile. Zoom lenses vary a lot in focal length and come in telephoto, wide angle, and also wide-angle to telephoto.
When you shop for a zoom lens check the rating for the f-stop. One example is f3.5-f5.6 24mm to 300mm lenses, which means the lowest f-stop for which you can photograph is at a 24mm range from the lenses and if you zoom at 200mm then the lowest you could go is at f5.6. When you buy a zoom lens please try to get one which is glass-made and which is the fastest that you could afford, and you wont regret the decision. If youunderstand what the different groups for lenses can do, this will help you to make a more informed decision regarding what kind of lens to buy.

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