Horizontal field of viewformula

The documentation including tutorials is hosted here. The documentation uses sphinx to build and requires the extensions sphinx-astropy and nbsphinx.

Nov 18, 2020 — Objective lenses: There are usually 3-5 optical lens objectives on a compound microscope each with different magnification levels. 4x, 10x, 40x, ...

If you manage your Python installation and packages via Anaconda or miniconda, you can install stingray via the conda-forge build:

Most of these are installed via pip, but if you have an Nvidia GPU available, you’ll want to take special care following the installation instructions for jax and tensorflow(-probability) in order to enable GPU support and take advantage of those speed-ups.

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Now, navigate to this folder and run the following command to add an upstream remote that’s linked to Stingray’s main repository. (This will be necessary when submitting PRs later.):

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The documentation should be located in stingray/docs/_build. Try opening ./docs/_build/index.rst from the stingray source directory.

In this Tutorial, we will show an example spectral timing exploration of a black hole binary using NICER data. The tutorial includes a hardness-intensity diagram, the modeling of the power density spectrum, power colors, lag-frequency, lag-energy, and rms/covariance spectra.

ISO-21550 Dynamic Range Film used to determine the optical density range of a transmission scanner or other imaging systems are available at Edmund Optics.

In typical uses, requiring input/output, caching of results, and faster processing, we recommend the following dependencies:

While this does not give us the exact angle it works out to be within just a couple degrees, which is sufficient for our needs.

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Horizontal field of viewcalculator

The documentation below is built on top of Jupyter notebooks that can be run locally. The easiest way to retrieve the notebooks is by cloning the notebooks repository and browsing the directories, which are conveniently divided by topic.

If you have installed Stingray via pip or conda, the source directory might not be easily accessible. Once installed, you can also run the tests using:

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$ pip install pytest pytest-astropy jinja2<=3.0.0 docutils sphinx-astropy nbsphinx pandoc ipython jupyter notebook towncrier<22.12.0 tox black

The following images clearly show the difference between INTEC's FOV (left) and that of one of our competitors (right). Note the safety mannequin's standing near the rear of the truck? You don’t see them in the competitor’s image and would you really want to see them for the first time when they are directly behind your vehicle?

Stingray is a Python library designed to perform times series analysis and related tasks on astronomical light curves. It supports a range of commonly-used Fourier analysis techniques, as well as extensions for analyzing pulsar data, simulating data sets, and statistical modelling. Stingray is designed to be easy to extend, and easy to incorporate into data analysis workflows and pipelines.

For those of you wanting to contribute to the project, install the bleeding-edge development version from source. First fork our repository on GitHub and clone the forked repository using:

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Please be sure to run the test suite before you use the package, and please report anything you think might be bugs on our GitHub Issues page.

With the right fiber bundle focusing lens assembly, convenient coupling to an Oriel® Research lamp housing allows the output light of an arc lamp or QTH ...

© Copyright 2024, [{'name': 'Stingray Developers', 'email': 'spectraltiming-stingray@googlegroups.com'}]. Created using Sphinx 8.1.3.   Last built 25 Oct 2024.

At the same time an INTEC competitor (shown in the shaded area) lists their FOV at 130°. This is the diagonal FOV and when converted to horizontal by vertical we get approximately 104° H x 83° V. If we calculate out the difference in FOV we find that, in this case, you will see approximately 33% more with the INTEC camera than the competitor’s.

loading event lists from fits files (and generally good handling of OGIP-compliant missions, like RXTE/PCA, NuSTAR/FPM, XMM-Newton/EPIC, NICER/XTI)

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Windows uses an internal 32-bit representation for int. This might create numerical errors when using large integer numbers (e.g. when calculating the sum of a light curve, if the lc.counts array is an integer). On Windows, we automatically convert the counts array to float. The small numerical errors should be a relatively small issue compare to the above.

We welcome feature requests: if you need a particular tool that’s currently not available or have a new method you think might be usefully implemented in Stingray, please get in touch!

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Side to side and top to bottom, nobody delivers more viewing area than INTEC and with our matched aspect ratio between the camera sensor and display, you’ll see more, sooner and with less distortion.

Numerical aperture (abbreviated as 'NA') is an important consideration when trying to distinguish detail in a specimen viewed down the microscope. NA is a ...

There are formulas for calculating the true horizontal, vertical, and diagonal fields of view but you need a master’s degree in mathematics to figure them out - just kidding, though they are a pain to work out. To simplify things you could look at it this way, the horizontal measurement is approximately 80% of the diagonal measurement and the vertical measurement is approximately 75% of the horizontal.

Don’t be fooled by specs that only list the diagonal field of view. This is typically done to give the appearance that the field of view is larger than it actually is. While the specification may be true, it is ultimately misleading. Take for example the diagram below. The INTEC CVC470HXL camera (Full Picture) has a 125° Horizontal x 100º Vertical field of view. If we calculate that to the equivalent diagonal FOV we get 160º.

The field of view or angle of view of a camera refers to what the lens sees, like what you see when you look at something. The FOV measurement is specified in degrees and is typically shown in either Horizontal x Vertical or a diagonal measurement. The larger the field of view the larger the area that can be viewed.

Some of the dependencies are available in conda, the others via pip. To install all required and recommended dependencies in a recent installation, you should be good running the following command:

If you use Stingray for work presented in a publication or talk, please help the project by providing a proper citation.

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For those of you wanting to install the bleeding-edge development version from source (it will have bugs; you’ve been warned!), first clone our repository on GitHub:

You can build the API reference yourself by going into the docs folder within the stingray root directory and running the Makefile:

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