School of astrophotography
Posted: February 4th, 2007 by HrAstro
You're a proud owner of a telescope, and for some strange reason you also have a camera. So, have you ever wondered whether is it possible to photograph anything? Believe it or not, the answer is yes. For such a purpose any digital camera will do. The only question that remains, is which method should be used. If you own an automatic camera, you'll be limited only to lighter objects like the Moon, or the planets, and the only method which is at your disposal is the Afocal method. If you own a professional SLR digital camera almost all the doors are opened. The only problem may represent the rest of the equipment.
Basic methods of astrophotography are:
- "METHODS WITHOUT CAMERA GUIDING" - a method in which the camera is fixed, where we do not use manual guiding, or the possibility of telescope mount following. A method well - suited for taking shots up to 15 sec of exposition.
- "METHODS WITH CAMERA GUIDING " - a method in which we use the possibilities of mount following, or manual guiding. A good choice for very long expositions.
Every next division is only a subdivision of the mentioned branches, and we can sort them, in most cases, in both the "Methods without camera guiding" and the "Methods with camera guiding":
- Afocal projection
- Piggyback method
- Method of primary focus (under construction)
- Method of ocular projections (under construction)
Methods described in the following text are the ones I have been practising so far. There aren't many yet as I'm still a beginner. So, let's start with the most natural method, the Afocal projection!