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Photographic magnitude - Wikipedia
- https://en.wikipedia.org/wiki/Photographic_magnitude#:~:text=Photographic%20magnitude%20%28mph%20or%20mp%29%20is%20a%20measure,emulsion%20with%20a%20camera%20attached%20to%20a%20telescope.
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Photovisual magnitude Definition & Meaning - Merriam …
- https://www.merriam-webster.com/dictionary/photovisual%20magnitude
- Definition of photovisual magnitude. : the magnitude of a celestial body that is determined by observations with a photographic plate and filter combination giving nearly the same yellow-green sensitivity as the human eye and that is nearly equal to the visual magnitude.
Photographic magnitude vs visual limits? - Beginning Deep Sky …
- https://www.cloudynights.com/topic/573206-photographic-magnitude-vs-visual-limits/
- The theoretical visual magnitude limit is useful for making comparisons between telescopes, but doesn't tell you much about how deep you will be able to go either visually or photographically without also incorporating sky conditions. One thing you can count on, though, is that you will be able to go deeper photographically than you can visually.
Absolute, Apparent and Visual Magnitudes - Universe, Guide
- https://www.universeguide.com/fact/absoluteapparentandvisualmagnitudes
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Photographic magnitude Definition & Meaning - Merriam …
- https://www.merriam-webster.com/dictionary/photographic%20magnitude
- Definition of photographic magnitude. : the magnitude of a celestial body as determined by observations with an ordinary blue-sensitive photographic plate.
Photographic magnitude - definition of Photographic …
- https://www.thefreedictionary.com/Photographic+magnitude
- Values are measured by eye (visual magnitude) or more accurately by photometric or photographic methods, and range from –26.7 (the sun), through 1.5 (Sirius), down to about +30. Each integral value represents a brightness 2.512 times greater than the next highest integral value. See also absolute magnitude, visual magnitude 5.
magnitude
- https://www.daviddarling.info/encyclopedia//M/magnitude.html
- Photographic magnitude is the magnitude of a celestial object as measured on a photographic emulsion – a method of measuring apparent brightness that is now obsolete. Because emulsions are especially sensitive in the blue region of the spectrum, a blue star records as being brighter than a red star of the same apparent visual magnitude. UBV system
Magnitude Scale and Distance Modulus | Lonewolf Online
- https://lonewolfonline.net/magnitude-scale/
- The answer is 5th magnitude (apparent).each magnitude is 2.512 brighter or fainter then the next increment. So a 1st magnitude star is 2.512 times brighter then a 2nd magnitude star. Therefore, 2.512 * 2.512 * 2.512 = 15.85 times brighter or fainter - notice that 15.85 is close to 16).
Magnitude (astronomy) - Simple English Wikipedia, the free …
- https://simple.wikipedia.org/wiki/Magnitude_(astronomy)
- Visual magnitude means the amount of brightness of a star on a numbered scale. It is the magnitude based on the sensitivity of the human eye. Photographic magnitude is different from visual magnitude because photographic film is more sensitive to blue light and radiation the human eye cannot see. Related pages List of brightest stars
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