Hi, Barlow lenses reduce the angle of convergence at which light is concentrated, causing the angle at which light is concentrated to simulate a telescope with a longer focal length. And just like focal reducers, they focus light at an angle that simulates a telescope with a shorter focal length. They do not physically lengthen the focal length, I do not know if you understand me. Also, think about this, if, for example, you put a x2 barlow in a telescope, the focal length doubles, right? Well, according to what you said in the video, the focal point (where the light is concentrated) should have been one meter further from the telescope. (1000mm x barlow x2 = 2000mm 2 meters) And if this happens, then you would not be able to focus. It works as I have mentioned, reducing the angle of convergence in which the light is concentrated, making it simulate a telescope with a greater focal length. Sorry if there are mistakes or parts that are impossible to understand, I'm spanish and my english is so bad.
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Hi, Barlow lenses reduce the angle of convergence at which light is concentrated, causing the angle at which light is concentrated to simulate a telescope with a longer focal length.
And just like focal reducers, they focus light at an angle that simulates a telescope with a shorter focal length.
They do not physically lengthen the focal length, I do not know if you understand me.
Also, think about this, if, for example, you put a x2 barlow in a telescope, the focal length doubles, right?
Well, according to what you said in the video, the focal point (where the light is concentrated) should have been one meter further from the telescope. (1000mm x barlow x2 = 2000mm 2 meters)
And if this happens, then you would not be able to focus.
It works as I have mentioned, reducing the angle of convergence in which the light is concentrated, making it simulate a telescope with a greater focal length.
Sorry if there are mistakes or parts that are impossible to understand, I'm spanish and my english is so bad.
You did fine.
These videos are very informative, short and to the point. Great for newbies! Thank you!
Sub’d after watching your video on focal ratio, and just binge-watching your videos now. Enjoying them while learning a lot!
Thank You!
This was very helpfull thank you so much.
Very Good!... #1 ✝ {8-1-2022}