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SV193 2-Inch 0.8x Photo Reducer/Flattener for SV503 80f/7 ED Refractors
SV193 2" 0.8x focal reducer and field flattener for refractor telescopes, which can meet the illumination needs of full-frame shooting. With SV503 80ED refractor telescope, it can take dazzling celestial photos without worrying about the distortion of the star points on the edge of the photo.
SV193 0.8X focal reducer/field flattener
3-Elements 2 Groups Lens Structure and FMC Lens Coating
SV193 0.8X focal reducer/field flattener All refractors have inherent normal field curvature. This provides images that are sharply focused to the corners of DSLR and CCD imaging chips. In your image, the stars appear sharp and point-like across the field of view. You don't have to worry about photos that have a sharp center and blurry edges.
2-inch Barrel Size / M48*0.75 Threads Standard
The front end is a standard 2-inch socket to connect to the main lens, and the back end is M48x0.75 threaded to connect to the camera bayonet (Support Full Frame Camera).
Solid metal construction
Aluminum alloy material, strong sturdy and durable. Hard anodized finish aluminum body to help reduce weight.
Anonymous
Reviewed in Canada on February 18, 2025
Will not be a clear picture new telescope ed frome sv503 came damaged. So no high expectations frome product and they seem.tk have no idea of new purchas. Left hangings hmmmm
David Ruiz
Reviewed in the United States on June 2, 2024
Me llego manchado. Nada que no se solucionara con una mi kit de limpieza de lentes, pero igual es algo raro para algo nuevo. Asumo error en el control de calidad del producto. De ahi en fuera funciona perfecto.
Betelgeuse
Reviewed in the United States on March 6, 2024
Excelente producto, cumple con las especificaciones del fabricante y solo depende a que clase de telescopio lo acople.
Perfecto, excelente calidad
Reviewed in the United States on April 30, 2024
Daniel Paulino
Reviewed in the United States on August 30, 2023
Excelente para mi SV80ED
Michael Angelo de Guzman
Reviewed in Canada on July 24, 2023
Does as described. Field is really flat paired with my ASI 533.
Randallh
Reviewed in the United States on December 27, 2023
This is advertised as being for the SV503 but, with an additional spacer, it works well with my 550.
Xavier
Reviewed in the United States on October 5, 2023
The flatner works well when not adding anything between the flatner and the dslr camera. On a CCD you will need a 55mm space between the camera sensor and the flatner. DSLR camera already measure 55mm so just the flatner is the only thing needed.The flatner was made for small sensor like the one that comes with the ccd cameras so a little bit of egg shape stars might still form. You might need to process the stars with a lens distortion tool in adobe.
Rod
Reviewed in Mexico on July 28, 2022
Complemento para el telescopio Svbony SV503 80mm, monto el aplanador de campo y me ayudó a enfocar los objetos de corta distancía al menos de unos 2Km. Espero complementar la información en los comentarios del telescopio propio ya haciendo pruebas de observación de espacio profundo. Pero excelente compra.
Efrain Sánchez
Reviewed in Mexico on March 30, 2022
Reductor focal y aplanador de campo. Elimina la coma en la periferia del campo visual y además ofrece reducción de la longitud focal en un factor de 0.8, lo que permite hacer exposiciones un poco mas cortas.
csudvm2003
Reviewed in the United States on December 30, 2022
I received the field flattener at the end of November, and unfortunately it had two full thickness defects in the optical coating, about a mm in diameter each. They show up as the white spots near the periphery in the image, it's remarkably hard to take pictures of lens features. I contacted customer service the day I received the lens, both through Amazon and Svbony's site. Initially the Amazon email didn't respond, but Svbony's site email did, but only redirected me to the Amazon support site. This support did respond to a second email, and requested a few more images and then asked me to try to wipe off the defect with a soft cloth. After that they told me they'd send out a replacement. That was 2 weeks ago, and it's now been a month since I received the defective field flattener. I've sent two additional emails asking for updates that have both been ignored. I'm very disappointed in their customer service.Update - January 5, 2022I received the replacement field flattener last night, about 5 weeks after starting the process. I debated docking 1 or 2 stars for the hassle, but decided on one star, because the flattener does seem to work well. I'll know for sure once the clouds clear out, but I'm glad to have a good piece of equipment to look forward to using now.
Paul from CT
Reviewed in the United States on December 3, 2022
Not happy at all. You can definitely see the stars in all four corners look like eggs. When you look at a non cropped picture like my Christmas Tree star cluster and Cone Nebula shot you can see what I’m talking about. I do not recommend. I also had a sv503 that I purchased that the whole focuser just came loose during a session. I walked out to check on my rig and noticed that the camera was completely sideways. You could literally wobble the focuser back and forth. I purchased the ATO and reducer back in September and only got to use it a handful of times. I’d recommend maybe saving a couple bucks and purchase something of more reliable quality. When I contacted customer support. All they did was send me a couple of screenshots and an explanation of what a retaining thumbscrew was used for and after a couple of emails svbony dropped the ball on me. Not happy but lessons learned trying to save a couple of bucks.
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