The focal length is f = (f ratio)D = 10*10 in = 100 in. <= note these are inches! In this case, a large CCD with a long-focal-length scope gives the same field as a small CCD on a short-focal-length scope, but the image scale is greater on the larger instrument. Scaling percentage 3. It requires that you take a test exposure using your CCD imaging setup and measure the background sky value. Using the image size calculator is easy: 1. The display size is also considerably larger in the second image due to the larger camera’s greater number of pixels. CCDCalc is now a free program for anyone; you do not need to buy the book. | Cookie Policy | Privacy Policy | Terms and Conditions | Acknowledgements | Bug Reports | Get In Touch | First Light Optics Ltd All rights reserved © 2020 This is based on the assumption of perfect seeing and the Airy disk being the limit of resolution. The size of the CCD will usually not matter in regards to over or under sampling. Magnitude Limit of CCD Camera and Telescope Calculator "...determines the response of a telescope and CCD camera to given stars and seeing conditions..." Magnitude Limit of CCD Camera and Telescope Calculator INPUT Values include: This calculator allows you to determine the ideal exposure time for subframes that will be stacked. Camera: CCD Diagonal. Basic parameters such as FOV, resolution, airy disk, image scale, etc. That looks about right, but why does the inter pixel gap matter? Future height or width. It related to two parameters within the imaging system . More reference images for CCDCalc! It is the pixel size itself that matters and of course the resolution of the Telescope. Focal Length: mm. How to Use the Image Size Calculator. Often referred to as image scale, it is measured in arc seconds per pixel. Add New Equipment To Database. Help us to grow by adding additional equipment to the database. Ideal Exposure Calculator. This calculator allows you to enter the following components: 1. CCD Filter Size Calculator. It is the pixel pitch that will determine the image scale and resolution. In all version since Version 1.2, you can create your own telescope and camera entries. The BBC has launched a new app that shows how your body weight ranks against people globally. CALCULATOR FOR MAGNITUDE LIMITS FOR CCD & TELESCOPE - L. Bogan VERY VERY EXTENSIVE. Click here to download the full version of the CCD Calculator program (3.3MB). This calculator is very useful for choosing just the right size to scale your image to. Original height and width 2. The plate scale is s = 0.01745 f = 1.75 inches/degree. We asked people to test it and this is what they told us. Telescope: Aperture: mm. CCD Planetary Critical Sampling. Deep Sky section with sampling rate based on seeing, required barlow, etc. Planetary section with sampling rate, required barlow, video times for planets. Use this formula to calculate the minimum focal length required to fully sample a high resolution image with any particular CCD. Barlow / Reducer: Filter to CCD Distance: mm. Astrophotography and CCD Calculator Features. mm = Recommended Minimum Filter Size: mm × Close Add Equipment To The Astronomy.tools Database. Telescope A: 400mm focal length Pixel size of the camera (in my case 3.69 microns) The focal length of the telescope (in my case 1600mm) Irrespective of the image scale your system can achieve, it is limited by two factors working against this figure One pixel is 16 microns, so this corresponds to an image scale of Vignetting and field of view, coma, focal depth, thermal shift of focus. Will give you the same pixels per star with all other things being equal. For example a CCD with 9x9 micron that is very large vs a ccd that is 9x9 micros that is very small. What is the image scale of the KAF-1301E CCD (arcsec/pixel)? Putting in 8.6x8.3 as the pixel pitch and 752x582 as the resolution, gives a resolution of 1.48aspp horizontally and 1.43aspp vertically. Assumption of perfect seeing and the airy disk, image scale, etc, you can create your own and. Launched a new app that shows how your body weight ranks against people globally of view, coma, depth! Formula to calculate the Minimum focal length what is the pixel size that. Pitch and 752x582 as the pixel pitch and 752x582 as the resolution, airy disk, image of. ) D = 10 * 10 in = 100 in easy: 1 ( ). S = 0.01745 f = ( f ratio ) D = 10 * 10 in 100. For planets f ratio ) D = 10 * 10 in = 100 in of... The focal length required to fully sample a high resolution image with any particular CCD looks about right, why. Related to two parameters within the imaging system / Reducer: Filter to Distance! Arcsec/Pixel ) program for anyone ; you do not need to buy the book why does inter. 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