As such, it may not be the best idea to spend your precious money on the best astrophotography telescope all at once. Choose an ‘affordable’ telescope to start your astrophotography hobbyĪlthough astrophotography is quite exciting as a hobby, it comes with some steep learning curves. Example of Coma at the edges of your field of view 2. Equipment such as coma correctors for mirror-based telescopes, or flatfield correctors for lens-based telescopes can be bought separately and used in combination with your telescope to eliminate off-axis coma (or field curvature) in your pictures. As a consequence, stars at the center of your picture will be nice and round, but towards the edges of the picture, the stars will be oval-shaped. Newtonian telescopes often have a parabolic mirror at the base of the telescope. I’ll explain the most important issue that dominates in the more affordable, mirror-based Newtonian telescopes, which is coma. There may also be other problems besides chromatic aberration, such as off-axis coma, field curvature, or astigmatism. My latest Horsehead Nubula – Combination of better skills and a telescope that does not suffer from chromatic aberration (a triplet refractor) As demonstrated in the picture below, chromatic aberration may occur when the red, blue, and green parts of the visible light will hit your camera sensor at a slightly different angle. This is a common optical problem that occurs when a lens is unable to bring different wavelengths of the light spectrum onto the same “focal plane” – which in astrophotography is your camera sensor. The first problem is that some (refractor) telescopes will suffer from chromatic aberration, also known as “color fringing” or “purple fringing”. At least two problems may occur when you buy the ‘wrong’ kind of telescope that is unfit for astrophotography. The first requirement is that you want a telescope that is able to produce high-quality pictures of deep-sky objects such as galaxies, star clusters, or nebulae. Choose a telescope that produces good color-calibrated images of the night sky. In short, mastering astrophotography is like running a marathon, it’s not a sprint. It will also take time to master all of the astrophotography skills needed to accurately track and capture deep-sky objects. You will also need other gear such as a good tracking mount and a camera. Before I start discussing these criteria in more detail, I have to warn you that your telescope is only one piece of the astrophotography puzzle. Third, your telescope should be easy to set up and use, and fourth, your telescope should not require any maintenance. Second, your telescope should be ‘relatively’ affordable. First of all, your telescope should produce a high-quality image of deep-sky objects. There are several things to take into account when buying your first astrophotography telescope, and I’ll mention the ones that I find most important. What beginners should look for when buying their first telescope for astrophotography As there are many different types of telescopes available, I will break down this blog into three parts where I discuss what the most important criteria are to look for when buying your first astrophotography telescope what types of telescopes fit those criteria and what affordable telescopes are available on the amateur astrophotography market today. There are several advantages such as (a) an apochromatic refractor produces high-quality images of beautiful deep sky objects (b) the smaller apochromatic refractors up to 80mm are relatively affordable (c) refractors are lightweight and therefore easy to set up and use, and (d) refractor telescopes do not require any maintenance. In my opinion, the best telescope choice to start your astrophotography is with an apochromatic refractor telescope. There are many types of telescopes on the amateur astrophotography market which can be quite overwhelming. One of the first questions that probably comes to your mind when starting astrophotography is what kind of telescope you should buy at an affordable price.
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