By collimating your reflector you are fine tuning your viewing experience. The process of collimation involves lining up all the mirrors of your telescope so that the reflected light is directed directly up the focus tube to your eye
What prompted me to start this blog was the flood of information I got when researching my first telescope. At the moment I don’t have one and to be honest I am still learning all about the different components and capabilities on offer.
A few things considerations I have are,
1. This is most definitely a starter scope, I am not interested in spending thousands of pounds on a telescope (yet!)
2. I would like to be able to capture some photographs of the night sky without too much extra investment.
3. Needs to be relatively portable, in that I will be bringing itÂ in and out of the house.
4. Not concerned with using the telescopeÂ for land viewing.
The focal ratio is the relationship between the diameter of the main optic (aperture)Â and the focal length. LetsÂ useÂ a Skywatcher Explorer 130 for the next example, the 130 signifies the aperture of the telescope and the length of this telescope is 650 soÂ our focal ratio would be 650/130 = 5, so our f number would be f/5.