The difference between achromat and apochromat lens is basically in different chromatic aberration. If you are interested in astronomy, the mentioned chromatic aberration is the cause of the unappealing purple halo appearing around observed bright objects. So, while achromat lenses bring just two colors into focus, apochromats bring three, usually red, green, and blue.
Using extra-low dispersion lenses significantly reduces this residual color. This is the reason for buying one good quality apochromatic telescope rather than previously mentioned achromatic one. When you are ready to invest in buying some equipment, it's better to buy something that will allow you to get what you are expecting. This type of telescope is also great for astrography, or photographing stars and planets.
Making a choice is never easy because there is a large number of good quality telescopes to choose among. In any case, it is always advisable to try to find out more about something before making your decision. You can probably find some astronomy club in your town, and some people who are familiar with this. Take a look at their equipment first, have a little talk with them, and decide after that.
You will probably see various types of low-quality telescopes, even some that can be bought in a supermarket. You don't want to waste money on these toys. Find something that will satisfy your needs and meet your expectations. You probably know someone interested in astronomy, and it might be a good idea to ask this person for an advice. When you try a few telescopes first, it will be easier to decide.
If you decide to buy this type of equipment, APO 4'' refractor is a good choice, although not the cheapest one. The price might be a little higher, but you'll get really good quality, and the piece is still portable enough to take it along when you are chasing the stars. The larger models might be more complicated to transport, and smaller won't give you the required quality and sharpness.
Like with all other things in life, you will probably get exactly what you paid for. If you are ready to invest more money in your hobby, there is another thing you have to keep in mind. Larger models might be not only more expensive, but also more complicated to assemble once you get on site. Compact models are the better solution for people who don't want to spend too much time assembling their equipment.
Achromatic models are a much cheaper solution, and mentioned glare effect may be reduced on larger f-numbers. This might be a good solution for people whose children suddenly show their interest in astronomy, and this interest might not last for long. In this case, it might be a good idea to take small steps first.
In any case, it is up to you. Depends on your interests, the amount of money you are ready to spend and so many other factors. In case you don't have any experience in this, find someone who has, or some astronomy club in your area. Find out more about this field and about different types of equipment, before making your final decision.
Using extra-low dispersion lenses significantly reduces this residual color. This is the reason for buying one good quality apochromatic telescope rather than previously mentioned achromatic one. When you are ready to invest in buying some equipment, it's better to buy something that will allow you to get what you are expecting. This type of telescope is also great for astrography, or photographing stars and planets.
Making a choice is never easy because there is a large number of good quality telescopes to choose among. In any case, it is always advisable to try to find out more about something before making your decision. You can probably find some astronomy club in your town, and some people who are familiar with this. Take a look at their equipment first, have a little talk with them, and decide after that.
You will probably see various types of low-quality telescopes, even some that can be bought in a supermarket. You don't want to waste money on these toys. Find something that will satisfy your needs and meet your expectations. You probably know someone interested in astronomy, and it might be a good idea to ask this person for an advice. When you try a few telescopes first, it will be easier to decide.
If you decide to buy this type of equipment, APO 4'' refractor is a good choice, although not the cheapest one. The price might be a little higher, but you'll get really good quality, and the piece is still portable enough to take it along when you are chasing the stars. The larger models might be more complicated to transport, and smaller won't give you the required quality and sharpness.
Like with all other things in life, you will probably get exactly what you paid for. If you are ready to invest more money in your hobby, there is another thing you have to keep in mind. Larger models might be not only more expensive, but also more complicated to assemble once you get on site. Compact models are the better solution for people who don't want to spend too much time assembling their equipment.
Achromatic models are a much cheaper solution, and mentioned glare effect may be reduced on larger f-numbers. This might be a good solution for people whose children suddenly show their interest in astronomy, and this interest might not last for long. In this case, it might be a good idea to take small steps first.
In any case, it is up to you. Depends on your interests, the amount of money you are ready to spend and so many other factors. In case you don't have any experience in this, find someone who has, or some astronomy club in your area. Find out more about this field and about different types of equipment, before making your final decision.
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