Telescope Field of View Calculator Telescope Field of View Calculator Designation Value Required Data Telescope Focal Length MM Select Eyepiece Celestron - Micro Guide - 12.5 mm Celestron - Plossl - 6.3 mm Celestron - Plossl - 7.5 mm Celestron - Plossl - 10 mm Celestron - Plossl - 12.5 mm Celestron - Plossl - 17 mm Celestron - Plossl - 20 mm Celestron - Plossl - 26 mm Celestron - Plossl - 32 mm Celestron - Plossl - 40 mm Meade - Plossl - 5 mm Meade - Plossl - 6.7 mm Meade - Plossl - 9.5 mm Meade - Plossl - 16 mm Meade - Plossl - 25 mm Meade - Plossl - 40 mm Meade - Super Plossl - 6.4 mm Meade - Super Plossl - 9.7 mm Meade - Super Plossl - 12.4 mm Meade - Super Plossl - 15 mm Meade - Super Plossl - 20 mm Meade - Super Plossl - 26 mm Meade - Super Plossl - 32 mm Meade - Super Plossl - 40 mm Meade - Super Plossl - 56 mm Meade - Ultra Wide Angle - 4.7 mm Meade - Ultra Wide Angle - 6.7 mm Meade - Ultra Wide Angle - 8.8 mm Meade - Ultra Wide Angle - 14 mm Pentax - SMC XL - 5.2 mm Pentax - SMC XL - 7 mm Pentax - SMC XL - 10.5 mm Pentax - SMC XL - 14 mm Pentax - SMC XL - 21 mm Pentax - SMC XL - 28 mm Pentax - SMC XL - 40 mm Takahashi - LE - 5.5 mm Takahashi - LE - 7.5 mm Takahashi - LE - 12.5 mm Takahashi - LE - 18 mm Takahashi - LE - 24 mm Takahashi - LE - 30 mm Takahashi - LE - 50 mm Televue - Nagler - 4.8 mm Televue - Nagler - 7 mm Televue - Nagler - 9 mm Televue - Nagler - 13 mm Televue - Nagler Type 2 - 12 mm Televue - Nagler Type 2 - 16 mm Televue - Nagler Type 2 - 20 mm Televue - Nagler Type 4 - 12 mm Televue - Panoptic - 15 mm Televue - Panoptic - 19 mm Televue - Panoptic - 22 mm Televue - Panoptic - 27 mm Televue - Panoptic - 35 mm Televue - Plössl - 8 mm Televue - Plössl - 11 mm Televue - Plössl - 15 mm Televue - Plössl - 20 mm Televue - Plössl - 25 mm Televue - Plössl - 32 mm Televue - Plössl - 40 mm Televue - Plössl - 55 mm Televue - Radian - 3 mm Televue - Radian - 4 mm Televue - Radian - 5 mm Televue - Radian - 6 mm Televue - Radian - 8 mm Televue - Radian - 10 mm Televue - Radian - 12 mm Televue - Radian - 14 mm Televue - Wide Field - 15 mm Televue - Wide Field - 19 mm Vixen - Lanthanum LV - 2.5 mm Vixen - Lanthanum LV - 4 mm Vixen - Lanthanum LV - 5 mm Vixen - Lanthanum LV - 6 mm Vixen - Lanthanum LV - 9 mm Vixen - Lanthanum LV - 10 mm Vixen - Lanthanum LV - 12 mm Vixen - Lanthanum LV - 15 mm Vixen - Lanthanum LV - 20 mm Vixen - Lanthanum LV - 25 mm Zeiss - Abbe - 4 mm Zeiss - Abbe - 6 mm Zeiss - Abbe - 10 mm Zeiss - Abbe - 16 mm Zeiss - Abbe - 25 mm Zeiss - Abbe - 34 mm Eyepiece Focal Length MM Apparent Field Of View Degrees Calculated Results Calculated Magnification X Calculated True Field Of View Degrees More Tools for FOV Calculation: Telescope FOV Calculator FOV Calculator Camera Let’s talk about the field of view. This is the circle of the sky that we are able to see through the eyepiece of our telescope. As a whole, when you change your eyepiece to another in order to get a high magnification, your field of view is a tinier piece of the sky now. And you wonder how to measure this FOV? Telescope fov Calculator Overview How To Calculate The Field Of View The Best Focal View Focal Length Comparison Tool Astronomy Astrophotography How To Calculate The Field Of View: Find the Telescope Focal Length and input the value into our tool above. In the “Select Eyepiece” menu, select the model for your telescope. Enter the “Eyepiece Focal Length” in the next box. In the next menu just enter your Apparent Field Of View. Click the “Calculate” button at the bottom and it will give you the Field of View. We are able to measure a FOV through the help of degrees and/or fractions of a degree. To get started on calculating this, you need to be aware of the magnification of the telescopes lens as well as the field number of the one currently in use. Once you have done that, you divide the field number by the magnification numbers to find out the diameter of your FOV. Let’s dive deeper into direct formulas. To figure out why these powerful lenses are distinctive from the other, we use a telescope fov calculator. This is called a field of view calculator. To calculate this FOV, we use two popular methods. The first one consists of dividing the Apparent field of view of the lens by the magnification of its system. Another formula that could be used to calculate FOV would be dividing the diameter of the eyepiece by the telescope’s prime focal length. After which you are to multiply it by the constant number of 57.3. What Does FOV Tool Do + Steps (Simple steps): This tool is able to calculate the field of view. And the reason why it is better than other tools is that not only is it able to calculate the measurement exactly and as close to the correct answer as possible, but it is rather easy to do! Other methods would require hard and long math, several procedures, going to a professional. Which could all be very costly. The better alternative to better yet improve your own abilities would be to be able to calculate the fov on your own. As you know your telescope best. Familiarizing with your telescope could even become a new way of finding out the unique features your ‘scope has to offer to you. This is why this method would be less time consuming, less draining, faster, and less money consuming. Let us get to moving on about how to use this tool. Firstly, find out the specifications of your telescope Then, using the mentioned guides and math formulas in this article. Insert the specifications of your telescope into the formulas The result of your problem should easily be able to tell you the exact magnifications of your telescope, to the field of view as well. All inventively helping to improve your astrophotography and telescopy. The Best: M41 is hands down one of the most famously known astronomical clusters of stars present in the constellation called Canis Major. The reason why it is so is because of the fact that it is the brightest in its kind being a K3 giant of an apparent magnitude of 6.3. Some tools you can use and astronomy lens you can use in order to catch these cluster of stars areas of the follows: Astro tech: This company is able to produce hundreds of high-quality lenses and equipment for your astrophotography journey or astrology hobbies. their Astro tech at65edq lens is able to provide its customers with an insanely flat and wide field of view, ensuring that you are able to get deep spacing from your telescopes. Moreover, the Astro tech 115 and Astro-tech at60ed are able to give out a triplet apochromatic refractor. Making the performance even better for you! Orion: For galaxy viewing and your stargazing, Orion has brought to you this amazing CCD field of view formula and telescope called its Orion eon 120. This has a refractor telescopic lens with a multi-coated double lens. Along with this, its Orion 80mm eon and Orion 80ed cf lens, made with exceptional quality and extra-low dispersion, optical glass technology, it ensures you get the best telescopic experience ever! Others: Some other telescopes that are the best in its kind for the field of view astronomy are called APM 152 ed and nebula 5000 pros. Both of these lenses are able to give their consumers the best of the best from their market. Focal view: This is a distance measured in millimeters. The focal length is a distance that is measured from the lens of your telescope to the image that it is making. It is often in telescopes that a focal length is estimated to be the length of its tube. While other telescopes use technology with a set of lenses or mirrors that make a long effective focal length within its own tube. Focal length comparison tool: As said that a focal length is a distance between the telescope’s mirror and the image it creates, this comparison tool is able to visually compare the focal length and the angle a pair of two lenses create for you to compare between them. These focal length comparison tools can be found online as well, or in the shape of a simulator for your aid. Astronomy In order to get your astronomical journey started, you must be aware of what this calculator is. Astronomy calculators are a set of functions that are useful to study astronomy itself. There are different types of calculators such as Kepler’s 3rd Law formula, small-angle formula, flux and magnitude formulas, telescope formulas, mass formulas, relative size formulas, wavelength formulas, and luminosity formulas. All of these are able to calculate the astronomical distance between the surface of the earth, all the way to the astronomical bodies present in our solar system (ie. The moon, sun, planets, the milky way and so much more) When wanting to start astrophotography, one must have specific types of cameras and lenses. Thus, if you are looking for an astronomy lens, some of the best would include Canon EF-M, Tokina AT-X 116 PRO DX-II Lens, Rokinon 14mm F 2.8 Ultra Wide Lens, Tokina 11-16mm f/2 lens. Astrophotography Got the lens, now let us learn about the 500 rule in astrophotography. This is a trick used in astrophotography lens charts, that is used to determine the maximum exposure time whereby, you can shoot up towards the star without it become too blurry or before they lose their sharpness. This rule can prove itself to be perfect for images of many focal lengths, and would work better when the shutter speed is set for lower than what we would allow it to be in. Resulting in sharp-looking stars in your astrophotography. So now you have got all the information you need to get yourself start on your astronomy journey, so let’s get to stargazing!