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Telescope Focal Reducer | Refractor Focal Reducer
- https://www.skiesunlimited.com/astro-imaging-accessories/focal-reducers/#:~:text=Focal%20reducers%20are%20primarily%20used%20in%20astrophotography%20to,curvature%2C%20providing%20the%20flat%20field%20necessary%20for%20astrophotography.
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Agena's Guide to Focal Reducers - Agena Astro
- https://agenaastro.com/articles/product-types/focal-reducers-guide.html
- These 0.63x focal reducers were originally designed to optimize for an image circle to match 36mm x 24mm film or its digital equivalent for astrophotography. These reducers can also be used for visual observing with SCT scopes with eyepieces with a …
Beginner in astrophotography, question about focal reducer
- https://www.cloudynights.com/topic/808526-beginner-in-astrophotography-question-about-focal-reducer/
- Beginner in astrophotography, question about focal reducer - posted in Lunar Observing and Imaging: Hi All, I have a question about a 1.25 focal reducer - 0.5X with 25mm extension which I recently purchased, to try and get a full image of the Moon in the FOV. I have a Celestron AstroMaster 130EQ reflector telescope (650mm focal length, 130mm aperture), and …
Focal Reducers - OPT Telescopes
- https://optcorp.com/collections/focal-reducers
- Focal Reducers Focal reducers shorten the focal length and speed up the focal ratio of a telescope. Reducers are similar to barlows, only their magnification factor is less than 1x. Focal reducers are great for astrophotography and …
The 16 Best Astrophotography Accessories | Everything …
- https://astrobackyard.com/astrophotography-accessories/
- Focal Reducer/Field Flattener. Focal reducers allow you to change the native focal length of your telescope (i.e. shorten the focal length) and improve the light-gathering power. For example, a 0.8X focal reducer will transform a telescope with a focal length of 500mm at F/6, to 400mm at F/4.8. A field flattener, as the name suggests, flattens the field of view. When the field flattener …
Of Pixel Size and Focal Reducers - Sky & Telescope
- https://skyandtelescope.org/astronomy-resources/astrophotography-tips/of-pixel-size-and-focal-reducers/
- Adding a f/6.3 focal reducer drops the effective focal length to about 2,500 mm — a good match for the 18-micron pixels available with a KAF …
How Focal Ratio Affects Your Astro Images - Sky
- https://skyandtelescope.org/astronomy-blogs/imaging-foundations-richard-wright/how-focal-ratio-affects-your-astro-images/
- Why (and Why Not) to Use a Focal Reducer. So we know that a brighter image has more signal and less shot noise, which is highly desirable for our goals. Because of this, a popular accessory for astrophotography is the focal reducer. A focal reducer takes the light cone from a slower optical system, f/10 for example, and focuses it to a smaller area, effectively reducing …
Astrophotography Equipment - Basic Setup for Deep-Sky Imaging
- https://astrobackyard.com/astrophotography-equipment/
- Focal Length: 480mm; Diameter: 85mm; Focal Ratio: f/6; Weight: 7.5lb; Dovetail: Vixen; Perfect for astrophotography. There are several things I love about this telescope. Weighing in at 7.5 lbs, and including a high-quality aluminum padded case with a handle, this refractor is a breeze to transport. I also love the consistency of the images it produces.
Telescope Focal Reducer | Refractor Focal Reducer
- https://www.skiesunlimited.com/astro-imaging-accessories/focal-reducers/
- Focal reducers are primarily used in astrophotography to compress the light cone exiting the telescope down to a size closer to that of the sensor within your camera. This also results in a brighter image which reduces the exposure time. Focal reducers also reduce field curvature, providing the flat field necessary for astrophotography.
Focal Reducers and Field Flatteners | Orion Telescope
- https://www.telescope.com/Astrophotography/Focal-Reducers-and-Field-Flatteners/pc/2132/2014.uts
- Orion 0.8x Focal Reducer for Refractor Telescopes. The Orion 0.8x Focal Reducer for Refractors increases any 2" focuser-equipped astrophotography refractor's field of view while reducing the effective focal length by a factor of 0.8x, thereby providing a …
Focal Reducers | Orion Telescopes (EU): Shop
- https://eu.telescope.com/Astrophotography/Focal-Reducers/pc/491/591.uts
- The Orion 0.8x Focal Reducer for Refractors increases any 2" focuser-equipped astrophotography refractor's field of view while reducing the effective focal length by a factor of 0.8x, thereby providing a shorter, more optically fast focal ratio. € 149.99 Orion 0.5x Focal Reducer for StarShoot G3/G4 Cameras
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