C11 focal reducer. Celestron Reducer / Corrector f/6.

C11 focal reducer 7 reducer. This will mean I won't need a guide scope or off axis guider. 0 for the C14 telescope. 1x and 1. A-P grear is great stuff (part 2?). Constructed from the best optics, it reduces the aberration Jan 17, 2012 · Amazon. 3 for a significantly wider field of view Shortens exposure times for astrophotography by 3 times Four-element, fully multi-coated optical design with 41mm clear aperture Threads into rear cell and works with any brand and size of Schmidt-Cassegrain In addition to reducing the focal length and f/ratio the Celestron Reducer/Corrector Lens also reduces field curvature significantly so you get a flatter, well corrected field. In relation to the step adaptor, it's an adaptor I bought that attaches the camera directly to the diagonal, i. In addition, the HyperStar acts as a focal reducer to increase the optical speed to abo Celestron Reducer / Corrector f/6. Celestron says it requires 105 mm of back focus, but I'm seeing better results with 85 mm and still need to reduce Aug 22, 2021 · To get the correct focal length (and correct image circle and field flatness) from a reducer, your back focus distance has to be quite precisely set. 7 reducer they sell for it if Im primarily doing visual observing. Recommended Compatible Cameras The SCT Corrector has a nominal 27mm image circle. Super frustrating. Im aware of its relatively narrow field of view, and I know that there are focal reducers available which reduce the FL to F/6. This combination f/6. Starizona SCT Corrector LF 0. 7x Focal Reducer -> Some Optec focuser -> An adapter from optec to 2" -> Filter Wheel -> Camera Perhaps you could fill in the blanks with specifics and dimensions. Choose the right focal reducer for you scope here at OPT! Jan 30, 2024 · Celestron's 6. The Starizona SCT Coma Corrector offers astronomers and astrophotographers with standard SCT telescopes a wider field of view. 3 Reducer/Corrector lens accessory works with all Celestron C5, C8, C9. In order to get the best performance out of the C8, you may need to re-center the Secondary/Corrector. 7x reducer / corrector. Feb 4, 2014 · Page 1 of 2 - Imaging qith a C11 Hedge HD - posted in Cats & Casses: I do not know if this is the best forum for my question but there it goes. 63 focal reducer. 63 focal reducer for visual? - posted in Cats & Casses: Good day, Ive just ordered a Celestron 9. The use of this zoom lens has a good performance in both visual and photography. This corrector is made for the Celestron 11" and 14" standard SCTs. Apr 11, 2022 · This combination focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes. I guide with a OAGs, and use an ASI2600C and ASI1600 mono with filter wheel. An f/11 Still chasing stretched stars with my Celestron 0. 9, making the system 25 times faster. Oct 30, 2022 · However, when you’re using a corrector or reducer, back focus must be a set distance away. Just divide the eyepiece focal length into 1764mm. I just got the Zwo asi94mc pro for my c11 edge hd and then found out I needed a focal reducer and t adapter plus the spacers. 63x focal reducer/corrector. I ended up buying Celestron’s F/6. To make deep-sky imaging more practical, Celestron offers a 0. 3 focal reducer and field corrector lens accessory works with all Celestron 5", 6", 8", 9 1/4", 11" and 14" Schmidt-Cassegrain telescopes. The design reduction factor of a focal reducer is the relative amount by which the effective focal length of the telescope is reduced when the focal reducer is used at its specified working distance or back focus. 4 seems a bit big difference. 25" rear cell threads of all 14" EdgeHD optical tubes, in front of your imaging equipment. Total time for this is 1 hour at 1600 iso. Issue is the threads are not correct and it won’t screw on more than a quarter of a turn. 3 Focal Reducer Corrector for SCT Telescopes takes Celestron's line of f/10 and f/11 SCTs to f/6. 7x reducer for my Edge C11 for visual use only, but seem to recall some discussion here and there about performance issues, inconsistency in unit to unit, or ?? Most of the discussion I have found centers more around use for astro photography. 1 C9. New member here. 7x Focal Reducer Lens makes your EdgeHD 1100 one full F-Stop faster than f/10, reducing your exposure time by half to capture the same brightness of object 5-element lens design Maintains similar flat-field performance as native EdgeHD optical design Increases field of view by 43% to better capture wide field images Threads directly onto the 3. The EdgeHD . The EdgeHD version is superior for deep-sky imaging to the regular C11 thanks to its flatter field and mirror locks, however. 05 mm C14 146. Are there any other focal reducers that can say get me down to F5? Thanks for the help In this video, I'll review the main advantages of this reducer and explain how to install this reducer on your Edge HD, taking into account the correct back focus of 105mm. From the response thus far, the f/6. 7x reducer for my C11 EdgeHD. 7x Reducer Makes Your EdgeHD 1100 One Full F-Stop Faster Than f/10, Reducing Your Exposure Time by One-Half to Capture the Same Brightness of Object 5-element lens design Maintains similar flat-field performance as native Edge HD optical design Increases Field of View by 43% to Better Capture Wide Field Ima Jul 12, 2012 · M57 in C11 with focal reducer - posted in Beginning Deep Sky Imaging: Out last night trying out the scope with the focal reducer on my favorite target. 66 Focal reducer from the 2 Denkmeier Powerswitch S1 diagonal, with my C9. That means 25-times shorter exposures! Now you can capture deep-sky images without guiding and without an equatorial wedge (in alt-az configuration). Optec Lepus HD Reducer - C11 Edge HD Version Lepus 0. Starizona SCT Corrector LF - Large Format Reducer & Coma Corrector M101 taken by Justin P. On the down side, I found the OAG was pretty useless. Engineered to preserve the EdgeHD’s flat-field optics, it maintains edge-to-edge sharpness and reduces vignetting and distortion Jan 24, 2020 · EdgeHD focal reducer performance (C11 specifically) - posted in Cats & Casses: All, Thinking about buy the 0. 25, C11, C14) threaded baffle tube lock nut: C8 133. The C11 is at 1280mm focal length with the reducer and the C11 at 1760 with the same reducer. 975 in from 3 in Primary Mirror Baffle Tube Lock Ring C14 5. 63x focal reducers, MoonLite offers a very ingenious solution – the focal reducer can be mounted inside their SCT focuser, directly on to the focuser drawtube. I have a Celestron 11 Edge HD and the . no eyepiece involved. The focal ratio is reduced to f/7. This Celestron EdgeHD 0. The reducer sure makes the ring smaller but it does add lots of stars which DSS likes. with a C11 and the Large Format Corrector Starizona's SCT Corrector has been an incredibly popular focal reducer and coma corrector, giving astrophotographers with s The reducer/corrector duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell visual and photographic accessories to the reducer. Can you not just achieve the same result with a longer eyepiece? Or is there something Im Feb 7, 2024 · Re: Hyperstar + reducer by 1jimalexander » Thu Feb 08, 2024 3:51 pm Thanks for the replies. Equivalent Focal Length High-precision fully multi-coated optical glass lens, spherical is minimized, so that the Sep 29, 2015 · The Amazing HyperStar A Guide to Optimize PerformanceJohn Hayes,Ph. The Starizona HyperStar™ adapter provides high quality, wide field imaging capability for Celestron C6, C8, C9. 5 times shorter exposure Focal reducers shorten the focal length and speed up the focal ratio of a telescope. Aug 23, 2010 · f/6. There are many different types of focal reducers and they a Jan 30, 2020 · C11 Edge HD -> Possibly the Celestron 1100 0. 25, C11, C14) | No EdgeHD tubes) Sep 1, 2019 · Focal reducer questions for edge scopes - posted in Cats & Casses: Over the past 4 years I have bought a C8 edge, a C11 edge, and the . 7x Reducer Starizona's SCT Corrector has been an incredibly popular focal reducer and coma corrector, giving astrophotographers with standard Schmidt-Cassegrain telescopes an improved optical system and wider field of view, with increased photographic speed. Feb 7, 2021 · Page 1 of 2 - C11 EdgeHD Mirror-locked focus options - front or back - posted in Cats & Casses: Can I have a sanity check? It appears there are two commonly recommended solutions to get mirror-locked focus on the C11 EdgeHD. 75x Reducer/Coma Corrector NightOwl . Mar 22, 2025 · Page 1 of 2 - 0. 3 focal reducer. I have a C11 Hedge HD mounted on a SW AZEQ6 GOTO mount. 7 reducer to my OTA. Nov 4, 2012 · The back focus distances are as follows: SCT Back focus distance from primary mirror baffle tube lock ring (in) C5 5 in C6 5 in C8 5 in C925 5. There was not enough back focus. 7X Edge HD Reducer Lens : Camera Lenses : ElectronicsAbout this item EXPANDED VIEWS - The . Precision-engineered for a 0. I ordered a C14 edge Jul 19, 2023 · Any point to using an external focuser with reducer on C11? - posted in Cats & Casses: I am working on building my imaging setup with the C11 XLT. Newtonian telescopes r May 21, 2018 · Another thing I needed was a Field Flattenter/Focal Reducer. Feb 8, 2010 · With the standard F/6. I have never use the Starizona reducer/flattener with a APS-c size chip which it should accomidate. 7x, which allows you to capture wider field views of the sky while maintaining excellent im May 27, 2009 · C11, Canon 50D and . Celestron C-6 Schmidt-Cassegrain Telescope Setup This is my grab and go imaging telescope. 5x focal reducer, a telescope with a focal length of 1000mm will operate at 1000 x 0. Mar 25, 2022 · Focal reducers - posted in Eyepieces: I have a C11 Edge HD, an Explore Scientific AR 152, an Orion 80mm CF APO Triplet, a Meade 6 inch lx85 Mak OTA, a Celestron C90 Mak, an Orion Apex 102 Mak and an ancient Edmund Scientific 6 inch f/8 Newtonian in perfect shape. It looks like each reducer has a different part number, but does anyone know if one . Im on two learning curve Focal lengths for the EdgeHD 1100 in its native format (f/10), with the . For example, with a 0. This enhancement allows for shorter exposure times and improved efficiency in astrophotography. By shortening the focal length from 2800mm to 1960mm, this reducer lowers your system from f/10 to faster f/7, enabling you to take deep-sky images much quicker while opening Jun 17, 2011 · 3. Most of the vignetting is due to the baffles in the telescope having been designed for the nominal f Oct 26, 2020 · The 0. Dec 11, 2021 · Celestron edge . It seems that the f/6. Three-piece mount includes lens holder, spacer and orange retaining ring. Im a newbie on SCT and moved from a refractor. 62x Reducer is designed specifically for Celestron EdgeHD & Meade ACF SCTs. 3 focal reducer, the C11 XLT is usable for deep-sky imaging, and the C11’s HyperStar compatibility allows you to shoot at an ultra-fast f/2 focal ratio and 560mm focal length. Designed to thread directly onto the large 3. SUPERIOR IMAGING - Fully multi-coated optics maximize light transmission and contrast, ensuring bright, clear, and high The focal reducer reduced my scopes focal length to 1260mm giving me a much wider FOV. 3 Focal Reducer back focus problem - posted in Cats & Casses: I picked up a Celestron f/6. 25)? How good is the guiding? Thanks Well, interesting development. Reducer shortens the effective focal length of Schmidt-Cassegrain telescope optical system by 37% Converts f/10 optical system to faster f/6. With the standard F/6. Here are the Celestron recommended distances for various EHD models behind the surface of the telescope’s rear cell 2″ (for C8) and 3″ (for C9. Is it even possible to get round stars across the field of an APS sized sensor with a C11 and standard 6. Focal reducer on a C11 Beginners TalkThanks for the quick replies guys. I understand that I must purchase the focal reducer + T adapter for Nov 11, 2025 · The 0. The focal reducer is huge compared to Sep 4, 2011 · A little aside. I also have a Canon 50D and Canon DSLR Celestron T-ring. Performance is similar on other size telescopes. Looking to capture stunning celestial images with your EdgeHD 1100 telescope? The Celestron 0. Without focal reducer it is not there. 3 focal reduser thinking that it would work well with my 2 visual back and 2 diagonal on my C11. 3 Reducer Corrector for C Series Telescopes and T-Ring for Canon EOS Cameras The tube offers a focal ratio of f/10 with the added versatility of Fastar (see below). 25, C11, and C14 SCT telescopes. 62x reducer on Edge HD 9. This Feb 5, 2019 · The Starizona LF reducer is designed for a traditional SCT and will work on the C11, C14 or the older Meade 10, 12, 14". It has three distinct configurations possible for imaging; 1. However, I tried it on the moon with a f6. 63 Focal Reducer Placement? - posted in DSLR, Mirrorless & General-Purpose Digital Camera DSO Imaging: I just got a . I'm a bit wary when I use it The Celestron f/6. 1 SCT Corrector . I have just tried a Nagler 31mm Type 5 with my C11, and it is certainly a great eyepiece for wide field of stars. This represents a notable speed increase of 2. Results are amazing both visually and photographically. Makes 2800 mm focal length of the C11 1960 mm and increases the focal ratio from f/10 to f/7 Makes 3910 mm focal length of the C14 2590 mm and increases the focal ratio from f/10 to Nov 13, 2025 · The defocus lens/corrector of this f6. Note that when inserting the focal reducer, with it's attached camera adapter, the The focal ratio is reduced to f/7. I can go with the Optec Fast-Focus secondary system, which adds weight on the front and the imaging train stays the same at the back, only mirror-locked. The Celestron f/6. com : Celestron 0. I will also be using Starzionas large format 0. When I run ASTAP platesolver in NINA, it says I put wrong focal length (1960mm - F7) and corrected it as 2070mm which makes it as F/7. 3 FR is designed to work only with a 1. Due to the nature of a focal reducer increasing the angular field of the telescope and thereby increasing the diameter of the incoming light beam, there will be some vignetting associated with large CCD sensors. May 6, 2022 · C11 HD spacing advice plesse - posted in Experienced Deep Sky Imaging: Hi sorry not another topic on spacing in here goes I have a C11 HD followed by 0. The f/11 C14 telescope becomes an f/7. This clever accessory makes it possible to have a dual focal ratio instrument without sacrificing image quality. 25, C11, and C14 telescopes. The SCT Corrector LF is designed for Celestron 11" and 14" standard SCTs. I'll have to check out the chip info between the two camera's when I get a chance. 63x Reducer/Corrector The Celestron C11 Starbright SCT (pre-XLT coatings), weighing nearly 30 lbs and large enough to hold a basketball inside it, is a large telescope. 63x reducer and coma corrector built to reveal sharper, wider views of the night sky. I'm a bit wary when I use it This video is a complete overview of focal reducers and how they function applying to telescopes. 7x Reducer Lens is designed to help you do just that. Is anyone experiencing the Dec 16, 2004 · Posted 16 December 2004 - 04:08 PM The 6. Clear skies! Wido. 63x III SCT Large Format Reducer MicroTouch Focuser Instructions / Drivers MicroTouch - Drivers MicroTouch - Wired Instructions MicroTouch - Wireless Instructions MicroTouch - Sky-Watcher Motor Counterweight Kits CPC 1100 Counterweight Kit CPC 9. Has anyone had experience using the Duo on a long focal length scope (C14, C11 or C9. I know F7 is like a nominal but F7 vs F7. 7 focal reducers that go with them. The focal ratio changes by the same amount from 1:10 to 1:6. 7x, this premium reducer will transform your Celestron EdgeHD 1100's f/10 focal ratio into a noticeably faster f/7! This is an increase of one full F-stop, equating to a doubling of light for the same amount of exposure time. Jun 30, 2019 · How do I connect . 4x SCT Reducer v. 25 EdgeHD, C11 EdgeHD, and C14 EdgeHD. Versatile design accommodates 3 focal ratios: native f/10, f/7 with the addition of a focal reducer, or ultra-fast f/2 imaging with a removable secondary mirror and third-party accessories Celestron’s premium StarBright XLT coatings provide maximum light transmission. I am hoping to use an external focuser (Baader Diamond Steeltrack) to avoid image shift and couple it with the EAF. 63 - this results in 2. This high-quality lens reduces the effective focal length of your telescope by 0. 7 focal reducer to t adapter c11 edgehd - posted in Beginning Deep Sky Imaging: Ok I thought I had it figured out but no such luck. 25 which Ill be mounting on a Skywatcher Wave 150i. 3 Reducer/Corrector. tools with c11,hyperstar, zwo 533 plugged into the cells for imaging, Andromeda is getting clipped. 3 reducer seems to be worth the cost. 3 focal reducer for even more astroimaging options. 2 in the C11, for a speed increase of 2. The C14 is f/11 The . Take your astrophotography to new heights with the Starizona SCT Corrector 4, a 0. The Optec Lepus . 25 back and diagonal. 63x reduction the Celestron f/6. First time round I noticed it was a little stiff to remove. Nov 2, 2020 · Cannot focus at night with C11 EdgeHD + 0. They sit on either my AP900 Goto or CGX-L (mostly my AP900). The telescope's stock rear Adapter Plate (see EdgeHD diagram) was replaced with an Astro-Physics 2" Visual Back (AP part # ADASCTLC) in order to install the focal reducer as close as possible to the OTA, as recommended by Optec. It threads directly onto the 3. 7x focal reducer, which shortens the focal length to 1960mm (f/7). Explicitly designed for Celestron Schmidt-Cassegrain telescopes, this unique lens reduces your telescope’s focal length and f/ ratio by 37%, turning your long focal length telescope into a fast, short focal length instrument. 62x Telecompressor Lens is created for Celestron 8", 9. 62 times reduction factor it spreads the field of view and improves the imaging performance, especially for deep-sky objects and wide-field views. This: Increases the field of view – Ideal for capturing larger nebulae. 7x Focal Reducer. I understand the backfocus should be 146mm? I was able to connect everything together and the lenth is 149mm. I'm imagining the light gathering ability of this large scope, how much brighter things will be and the objects it will bring in closer with the increased focal length. 9x, respectively. I will post more detail in a subsequent post as it becomes available. 3 C14 2365mm F6. Im excited about the scope after reading generally very positive reviews. Jun 20, 2021 · Celestron Telescope Accessory Bundle - f/6. 25 in the near future and am wondering if I should get the . I dont seem to recall if there was any Fast Focal Reduction With it's 0. 7x reducers, one for a C11 EdgeHD and another for a C14 EdgeHD. Nominally it will be within a few mm of the rear threads on the telescope. The system is composed of elements from various systems, put together for greatest flexibility, reliability and compactness. 3 SC thread ( note this doesn’t screw all way in into the reducer prob leaves about three threads ) an essato 2 in focuser - 67mm thickness Focuser end 2 visual back for ESATTO Apr 19, 2022 · I use the older SCT F7. Testing the Optec Lepus 0. The Celestron Focal Reducer and Field Corrector shortens the focal length of all schmidt-cassegrain telescopes by a factor of 0. 3 focal reducer/corrector requires a back-focus distance of 105mm from the end of the reducer to the imaging sensor on your camera. Im hoping someone can help me with this as Ive ready many forums on focusing with the C11 EdgeHD and I havent seen anyone sharing their experience with my issue on night time focusing on stars and even the moon. The other issue is the cost. 7x EdgeHD 1100 The Celestron 0. 3 and f/7 respectively. 2 on the C14 and f/7 on the C11. It should be understood here that by moving the primary mirror (M1) its May 16, 2010 · Focal Reducer-vignetting with C11? - posted in Cats & Casses: I routinely used the . The Optec Lepus 0. The Celestron 0. Designed for Schmidt-Cassegrain telescopes, it shortens focal length while correcting distortions, producing crisp stars from edge to edge. Measuring Back Focus When Using a Corrector or Reducer When back focus becomes really critical to get right is when you’re using an optical corrector or focal reducer with your telescope or one that is integrated into the design. Reducing the focal length by 30% increases the field of view and shortens exposure times. 7x Reducer: Does using the focal reducer significantly improve edge illumination for either sensor size? How does the field of view and vignetting compare between the APS-C and full-frame sensors in this configuration? With Hyperstar V4: For those who have used Hyperstar V4, how does it perform with both APS-C and full-frame sensors? The Reducer/Corrector is f/6. I use a TEC scope for my close in imaging. This accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality. There was a little vignetting but not enough to be really objectionable. 475 in C11 5. So last night I tried putting it all together but I must be doing something wrong. In this episode of Back-Focus 101 I cover the basics for attaching a DSLR camera or CCD/CMOS style camera to either the Celestron C9. 25 - posted in Cats & Casses: Hi CN!This is part one of the review. 0. 7x reducer lens EdgeHD work on both the C11 and C14 Edge HD? Thank you. May 26, 2019 · Celestron C11 Starbright + Celestron 0. The distance from your Lepus' rear flange to the camera sensor needs to be 105mm. 25 for widest possible TFOV. 975 in from 3 in Primary Mir Jun 12, 2019 · 2. 7x Focal Reducer is a precision optical accessory designed for the 8" EdgeHD telescope, specializing in both speed and versatility for astrophotographers. 3 focal reducer and I noticed that it shows an obvious shadow right in the middle of the field of view. Both scopes have autofocus & due heaters, Ive been using ASI Air Plus and Nexus - 0. D. When I use astronomy. I love the scopes but am not quite a joyful about the focal reducers. Its more Jan 18, 2025 · With a 0. 3 for C5, C6, C8, C9¼ and C11 telescopes and f/7 for the C14 telescope. 29" threads on the rear cell of C11 and C14 telescopes, the larger optical elements of the SCT Corrector LF minimize the vignetting over large sensors. Id imagine that the C11 needs its own dedicated focal reducer. 63x Reducer (FL=1,220) and HyperStar (FL=300mm). Is there a focal reducer that would work with all my other scopes?? Starizona Large Format Reducer and Coma Corrector for SCT This corrector provides a flat, coma free field over a 42 mm (full-frame) image circle, while increasing the photographic speed of the telescope by 2 times. I have also use it with the the C11. The reducer/corrector converts the f/10 focal ratio of Celestron C5, C8, C9¼, and C11 telescopes (and all Meade 8" and larger f/10 telescopes) to f/6. 7x reducer lens shortens exposure times and increases field of view by 43%, capturing more celestial objects in each image with your EdgeHD 1100 telescope. 1 Some Basic Definitions First, let's have a look at some key optical parameters are needed to understand focal reducers. The reduction factor of a focal reducer is the relative amount by which the effective focal length of the telescope is reduced when the focal reducer is used at its specified working distance or back focus specified by the manufacturer. 7x reducer is not only going to aid in imaging time, but also aid in keeping the mount accurate. Jun 10, 2019 · Nagler 31mm Type 5 and focal reducers with SCT - posted in Eyepieces: Hi. Get yours at OPT today! This Celestron EdgeHD 0. Will this work and do I measure from the threads on my focal reducer to the camera or from the rear of the telescope to the camera? May 9, 2025 · Page 1 of 2 - Reducer for visual? - posted in Beginners Forum (No Astrophotography): Is there any point in a focal reducer for visual observing? Ill be getting either a C11 or C9. 7x focal reducer turns your 11" f/10 EdgeHD telescope into a full f-stop faster f/7 scope, increasing your photographic field of view by 43% and cutting your deep space exposure times in half. These three telescopes Oct 26, 2023 · LIKE HAVING TWO TELESCOPES IN ONE: Your long focal length Schmidt-Cassegrain is well suited to lunar and planetary work. This version, a large-format version, is designed to cover full-frame (35mm format) sensors. Because of that they're somewhat picky about what accessory combination gives widest good view and bigger reason for using focal reducer is often decreasing exposure time in astrophotography. This Nexus - 0. 3 Meade/Celestron/Antares screw on focal reducer on a C11, what eyepieces will I be able to use with no major vignetting? I have both a 34mm Meade 5K SWA and a Celestron 31mm Axiom as well as a Oct 30, 2015 · Four-Element For Better Correction Astromania design the four-element, fully multicoated f/6. REDUCES FOCAL LENGTH AND F/RATIO BY 37%: Simply thread the reducer onto your telescopes rear cell and an f/10 Schmidt-Cassegrain becomes f/6. The SCT Corrector LF is designed to increase the available backfocus compared to Starizona's standard SCT Corrector. 25 146. Telecompressors Optec has a long history of designing and manufacturing exceptional optical correctors and focal reducers beginning in 1995 with the original MAXfield 0. Camera sensors are flat, but the C11 projects a curved field of sharp focus, so in order to take halfway decent long exposures with a DSLR on this scope, I needed to correct this field curvature. Equivalent Focal Length High-precision fully multi-coated optical glass lens, spherical is minimized, so that the Feb 6, 2024 · With a heavy-duty equatorial mount and f/6. 7 Please note: The SCT Corrector has a reduction factor of 0. The HyperStar lens shortens the focal length of the telescope, giving a much wider field of view, and giving a greater Dec 11, 2011 · Page 1 of 2 - Review: Optec Lepus 0. 7 focal reducer work on C11 and C14 Edge HD - posted in Equipment (No astrophotography): I would like to avoid having to purchase 2 . The example camera in this video is a Canon SL1, but this will apply to all DSLR cameras as long as you get your focal distance to 105mm. This focal reducer for Celestron C11 seamlessly reduces the effective focal length by an impressive 0. 4. Add the Reducer Corrector and you have a short focal length telescope perfect for deep sky observing and astrophotography. By shortening the focal length from 2800mm to 1960mm, this reducer lowers your system from f/10 to faster f/7, enabling you to take deep-sky images much quicker while opening Celestron Reducer Lens . This combination focal reducer and field corrector lens accessory works with all Celestron C5, C8, C9. 7 focal reducer where focus is not always easy to achieve. 25" threads of the EdgeHD which The diagram above shows how the SCT Corrector improves the off-axis spot size on a Celestron 11" SCT. Last night, prior to fitting a Barlow to image Mars, I Jan 27, 2021 · Page 1 of 2 - Focal reducer Benefits for visuals - posted in Cats & Casses: Hi, Any real benefits for focal reducer for visual observing? Other than FoV, I know for astrophotography, is a different matter I do have a C8 as well as many other smaller ones, I am just wondering if it worth the investment Thanks Apr 19, 2017 · C11->Focal reducer->CHL->Custom Barrel->OAG->small spacer->ASI071 The moonlite gives me the ability for finer auto focus so that I don't have to move the mirror around. 62x Focal Reducer with the 11" Celestron EdgeHD telescope. 3. The SCT Corrector LF is Mar 19, 2015 · C11'' Edge HD Focal Reducer Options? - posted in Cats & Casses: Hi all, Quick question. It uses 3. 3 for Schmidt-Cassegrains Telescopes (SCT) Celestron # 820775 4-element corrector reduces the focal length and corrects the field of view for Schmidt Cassegrain telescopes Simple adaptation - the reducer is screwed directly to the 2" SC thread of the SC telescopes. Backfocus is 146,mm accommodating a variety of accessories. They work to a point, but I get a fair amount of distortion around the edges with my full frame cameras. 7x focal reducer is a 5-element lens system that converts your 14" f/11 Celestron EdgeHD scope or optical tube into a fast f/7. 25 Counterweight Kit Dec 10, 2021 · Posted 15 December 2021 - 01:31 PM My friend has the same problem with his C11 Edge and 0. I have recently acquired a used C11. 7x Reducer Lens for EdgeHD8 from Celestron adds one full f-stop of exposure speed and broadens the field of view of the 8" configuration of Celestron's EdgeHD optical tube. Enjoy the videos and music you love, upload original content, and share it all with friends, family, and the world on YouTube. This clever accessory makes it possible to have a dual focal ratio instrument, without sacrificing image quality. He did a full teardown of his C11 to make some modifications to reduce mirror flop and focus shift, along with adding a temp sensor to the back of the mirror, fans and flocking. 3, reducing the required exposure time by a factor of 3. The Reducer/Corrector is f/6. 3 Meade/Celestron/Antares screw on focal reducer on a C11, what eyepieces will I be able to use with no major vignetting? I have both a 34mm Meade 5K SWA and a Celestron 31mm Axiom as well as a 23mm Axiom. Primary Focus (FL=1,500mm) 2. Apr 12, 2018 · However, for users of 0. I primarily use the C11 for Hyperstar. I received my Optec Lepus telecompressor for use with a Celestron Edge HD 9. Apr 19, 2022 · I use the older SCT F7. My tests of this scope are minimal due to whether, but in one short nightime view of Venus through The tube offers a focal ratio of f/10 with the added versatility of Fastar (see below). Im using a C11 and Im wondering what the proper placement of the FR is in relation to my camera. 7 Celestron reducer Adapter ESATTO 2 for telescopes with large 3. 25" and C11 telescopes and f/7. 25" and 11" EdgeHD telescopes, thus, the astrophotography has been being enhanced. The Celestron C11-A can be mounted on a multitude of computerized telescope mounts thanks to its CGEM-style dovetail bar. This precision accessory not only reduces exposure time but also enhances image quality Celestron Reducer Lens . The reducer travels with the focuser tube as it is racked back and forth, thus maintaining the correct working distance at all times. 3 focal reducer gives the C11 and effective focal length of 1764mm down from 2800mm. . How Focal Reducers Work 2. Figure 1 shows is a conceptual light ray diagram of my AT115 refractor. 5 version with my C9. 63x, providing a gateway to capturing expansive fields of view. If I was to Mar 30, 2021 · Celestron Focal Reducer for EdgeHD - thread issue - posted in Cats & Casses: I just received a new Celestron . 7" reducer for the focuser, and another little threaded to ring adaptor) and it worked All in all it was a little over $300 USD but compared to what Tak Feb 10, 2025 · However, at 2800mm focal length, guiding must be precise, and exposure times can be long. This factor is designated by a The reducer/corrector duplicates the rear cell thread of the telescope, allowing you to attach all standard rear cell visual and photographic accessories. 7 optical system. I seem to understand the While focal reducers help to decrease magnification, in Cassegrains available FOV is hard limited by mechanical factors, especially baffle tube. 475 in from 3 in-2 in Reducer Plate 5. Is this because of the small image circle of the 533? You do not have the required permissions to view the files attached to this post. Feb 22, 2012 · Galaxy Season, a C11 and focal reducer issues - posted in Beginning Deep Sky Imaging: With Galaxy Season coming up I had hoped to start working at longer focal lengths to get more detail, but Im having trouble getting acceptatble star images with the C11 and focal reducer. Jan 14, 2023 · Help with large SCT vs Refractor - posted in Experienced Deep Sky Imaging: I currently use a C11 (with Starizona focal reducer) and an Askar 600 (with focal reducer) to do my imaging. 7x Reducer Lens for EdgeHD 1100 is a high-quality optical accessory that will upgrade the performance of your 11" EdgeHD telescope, particularly for astrophotography. 25. Now I am planning to start with astrophotography, initially unguided. 25 1525mm F6. It offers wide fields of view with any Schmidt Jan 15, 2024 · Back focus plan for C11 edge - posted in Beginning Deep Sky Imaging: I have a c11 edge with a celestron oag along with a asi 533. Close coupled mount provides optimal image quality by maintaining a minimum distance between Edge HD corrector optics and Lepus telecompressor Aug 4, 2024 · The C11 weighs 28 pounds close to 35 with all the necessary accessories. I'm using it mostly for imaging but the visual views are definitely worth it. 05 mm This is the distance where the imaging camera sensor should be located. Fast Focal Reduction At 0. 63. The focal length is shortened by a factor of 0. Feb 8, 2010 · Focal reducer on a C11? - posted in Cats & Casses: Please forgive me if this question has been asked a million times, I did a search and couldnt find much about this specifically. Are there any other options? I am interested in this from a Astrophotography standpoint. The reducer/corrector converts the f/10 focal ratio of Celestron C5, C8, C9¼, and C11 telescopes (and all Meade 8” and larger f/10 telescopes) to f/6. Focal Length The exact focal length of the reducer/telescope combo depends slightly on where in the optical path the SCT Corrector lens is placed. 25", C11 and C14 telescopes. If offers wide fields of view with any Schmidt-Cassegrain telescope. 7 reducer stuck to the backing structure of the C11 Edge OTA - posted in Celestron Computerized Telescopes: That says it all! I had not known that there is a potential sticking problem between the reducer and the OTA when I bought and fitted the new 0. e. The reducer has a declared back focus of 146mm. So I got a used reducer A-P 27TVPH (and a 3. This increases the field Versatile design accommodates 3 focal ratios: native f/10, f/7 with the addition of a focal reducer, or ultra-fast f/2 imaging with a removable secondary mirror and third-party accessories. 5" to Ap-P2. 35 mm C9. With a native focal length of 2800mm and 280mm (11 inches) of aperture (F/10), it’s a long, slow scope and requires a substantial mount. 7X Reducer + ASIAir Pro - posted in Cats & Casses: Hi my fellow CNers. Changing this distance Nov 4, 2009 · The Reducer/Corrector is easy to install by threading the unit onto the rear cell of your Schmidt-Cassegrain telescope (or the reducer plate of the C11 and C14). 3 for C5, C8, C9. I think the native 2800mm focal length might be a bit much for the CGX during long duration guiding, and I’ll only reserve that native length for bright planetary objects that don’t require quite as accurate tracking. You can also pair it with the f/6. TEC does not make focal reducers for their scopes - they do make flatteners in limited runs. The scope is a C11. I attached it right on the large C11 thread and kept recommended 146mm working distance to sensor. What is the solution? Telescope Focal Length Focal Ratio C6 1220mm F8 C8 1450mm F7. 33X corrector/reducer for Schmidt-Cassegrain telescopes. 3 reducer was pretty bang on at that FL. Unique focal reducer and field corrector lens accessory Reduces the focal length and f/ ratio of your Schmidt-Cassegrain telescope by 37% Provides a dual focal ratio instrument, without sacrificing image quality Compatible with all Schmidt-Cassegrain telescopes (C5, C6, C8, C9. 7x Reducer Lens and with optional f/2 lens assembly. 3 reducer? I Apr 17, 2024 · Starizona's LF reducer is advertised as F/7 FR/CC for C11. Jul 22, 2020 · Four-Element For Better Correction Astromania design the four-element, fully multicoated f/6. 25/3. I tried it out tonight and could not get any EP to come to focus. 63x, but the C6 and C8 are actually closer to f/11 natively, and they have a shorter back focus compared to the larger scopes so the reduction is a bit less. 62x telecompressor lens system mounted in 3 1/4" x 24tpi threaded mount for direct attachment to Celestron 11" Edge HD SCT. Starizona's SCT Corrector has been an incredibly popular focal reducer and coma corrector, giving astrophotographers with standard Schmidt-Cassegrain telescopes an improved optical system and wider field of view, with increased photographic speed. 3 focal reducer in c11 for astrophotography? Please post pics of successes or failures, thanks, Jason. Following the”85mm backfocus” school of thought, I managed to get ASiair to do a polar alignment routine at a focal length of 1784 meaning the effectiveness of the Celestron F6. 05 mm C11 146. 3 focal reducer in c11 for astro - posted in Celestron Computerized Telescopes: Does anyone use 3. 27" thread on the visual back. 5 C11 1760mm F6. Im currently using a Celestron T-Adaptor, that threads into my FR which in turn threads into a nose piece, my orion imaging filter threads on Features The HyperStar C11 lens converts a standard Celestron 11" SCT from f/10 to f/1. 3X focal reducer/field flattener is a very popular accessory for non-Edge SCTs because it reduces the focal ratio of the SCT from its native f/10 to f/6. Small enough to fit in a large suit case. Starizona now offers a large-format version, the SCT Corrector LF, designed to cover full-frame (35mm format) sensors. 4 lenses- cemented together and coated, increase the light transmittance, the image is brighter and clearer. As Edge users know, Celestron has been slow in producing their promised reducers (to say the least), so I decided to Jan 23, 2024 · I am considering buying a ZWO 2600MC Duo to use on our astronomy club Celestron edge C14 with the 0. 5 = 500 mm when the reducer is placed at the working Mar 16, 2020 · Inner Workings - My Telescope & Focal Reducer Focal reducers provide an good way to increase your FOV without purchasing a new telescope and also flatten the image in some cases and they do indeed lower the Focal Ratio. Turn your Newtonian telescope into a fast, high-quality astrographic instrument with the Starizona Nexus focal reducer. As to Jim's point above - I've successfully used a C11 with a Crayford focuser and reducer, adding the focuser does increase the focal length of the telescope some - but it didn't adversely affect my images, and vignetting wasn't significant. 3 is a 4-piece design with full surface coating. 2 on the C14 and f/7 on the C11, for a speed increase of 2. Has this happened to anyone else? I’m not getting any response from Celestron to resolve this. It offers wide fields of view with any Schmidt The Reducer/Corrector is easy to install by threading the unit onto the rear cell of your Schmidt-Cassegrain telescope (or the reducer plate of the C11 and C14). Focal Ratio Reduction: The SCT Corrector LF reduces the focal ratio to f/7. The focal ratio is reduced to f/7 in the C14 and f/7. ctgddk lhxx faam okvjxdc vbvqsrk jlsnqsx zddxv rvhbh zoopn gcc vlld eshpho zbsxt opnca znjl