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Apr 04, 2019 · I've just purchased a William Optics 73 APO and Flat 73A flattener. My question is: the blurb says that I can fit 2 inch (48mm threaded) filters inside the flattener. For normal use W.O. give the spacing distance on the flattener as 11.4mm but adding the filter will a) shift the focus b)require the flattener's spacing to change ?
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William Optics Zenithstar 73-II f/5.9 APO (Free Soft Carrying Bag) HK$5,480.00 William Optics Zenithstar 61 f/5.9 APO William Optics Zenithstar 81 f/6.9 APO HK$6,990.00
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The Lacerta 72/432 FPL-53 ED APO Apochromatic Telescope is a good alternative to the William Optics Megrez 72 as the same Megrez objective lens has been used to build this telescope. The best colour correction that can be achieved in an ED doublet was achieved by choosing a high quality Ohara/Japan glass material of FPL53 with NBM51 partner ...
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Currently I image using an ASI071MC PRO, on a William Optics Zenithstar 73, with a Flat73 fieldflattener. And do guiding using an old USB2 version ASI120MM on a 60mm F4 TSL60D. I’m considering switching to using a OAG, in order to make my setup more compact. But I do have some questions/concerns.
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2019 All New Zenithstar 73 APO. Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying.
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Oct 12, 2018 · The William Optics Zenithstar 73 APO is a compact F/5.9 doublet apochromatic refractor with an impressive entourage of accessories to get you up and running. The Flat 73 1:1 field flattener is an essential upgrade if you plan on imaging with a full frame camera.
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New, dedicated 2" flattener by William Optics optimized for use with their Z61 Apo telescopes. On the telescope side, this flattener has a male M54 thread for direct connection to the focuser drawtube (this requires you to unscrew the 2" eyepiece holder ring to expose the M54 female thread inside the drawtube).
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William Optics Flattener 68-III HK$4,700.00 William Optics Flat 73 1.0x Adjustable Flattener HK$1,690.00 William Optics Flat61 1.0x Adjustable Flattener HK$1,690.00
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Imaging telescopes or lenses:William Optics Zenithstar 73 APO. Imaging cameras:ZWO ASI533MC Pro. Mounts:Sky-Watcher AZ-EQ6 Pro. Guiding telescopes or lenses:William Optics 50/200 Guidescope. Guiding cameras:ZWO ASI120MM Mini. Focal reducers:William Optics Flat 73A
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In it, Kepler described the inverse-square law governing the intensity of light, reflection by flat and curved mirrors, and principles of pinhole cameras, as well as the astronomical implications of optics such as parallax and the apparent sizes of heavenly bodies.
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Jun 14, 2007 · Please post your photos of your William Optics telescope set up to this group. William Optics is a quality manufacturer of astronomy telescopes and they ship their products to many countries around the world. They're best known for their high quality refracting telescopes.

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William Optics. Page 1 of 1: ... William Optics 2019 Zenithstar 73 II APO (1) £549.00 Add to Basket. ... Flat Field Generators; Focus Masks; My account / Register Home; Educational Science Toys Books, Star Charts and Innovative Gifts Aug 19, 2017 · Proctor speaks of “proofs which serve to show … that the Earth is not flat,” and says that man “finds reason to think that the Earth is not flat,” and speaks of certain matters being “explained by supposing” that the Earth is a globe; and says that people have “assured themselves that it is a globe;” but he says, also, that ... The Lacerta 72/432 FPL-53 ED APO Apochromatic Telescope is a good alternative to the William Optics Megrez 72 as the same Megrez objective lens has been used to build this telescope. The best colour correction that can be achieved in an ED doublet was achieved by choosing a high quality Ohara/Japan glass material of FPL53 with NBM51 partner ... Jun 14, 2007 · Please post your photos of your William Optics telescope set up to this group. William Optics is a quality manufacturer of astronomy telescopes and they ship their products to many countries around the world. They're best known for their high quality refracting telescopes. → William Optics Flat 73A William Optics Flat 73A For Sale. Price - $185.00. Ad Number: 225146. Posted: 01 Oct 2020 ... William Optics Zenithstar 73-II f/5.9 APO (Free Soft Carrying Bag) HK$5,480.00 William Optics Zenithstar 61 f/5.9 APO William Optics Zenithstar 81 f/6.9 APO HK$6,990.00 May 25, 2015 · Review of the William Optics 102 GT By Michael Hyrczyk. I received the GT 102 on Tuesday, March 10th, via UPS. A large gash on one end of the shipping box made my stomach twist a bit, but after opening the package I found a great packaging job and the telescope was well-protected against poor handling by the carrier.


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William Optics Soft Carry Case For FLT 98/102/110 £169.00 buy DETAILS The William Optics heavy duty soft carry bag made of high quality nylon fabric with water resistant coating on the inside surface is a top quality storage or carrying case for your 98-110 mm refractor telescopes This 0.8x Reducer/Field Flattener from William Optics is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes. Designed specifically for the William Optics Zenithstar 73 refracting OTA, this particular 0.8x field flattener and reducer is manufactured with full frame, chip-size DSLR ...

  1. New, dedicated 2" flattener by William Optics optimized for use with their Z73 Zenithstar OTA. Designed for APS-C size or smaller imaging chips (not for use with full-frame cameras). Features an M63 male thread for a direct threaded connection to the Z73 on the telescope side. On the camera side, the flattener has a male M48x0.75 thread. This 0.8x Reducer/Field Flattener from William Optics is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes. Designed specifically for the William Optics Zenithstar 73 refracting OTA, this particular 0.8x field flattener and reducer is manufactured with full frame, chip-size DSLR ...
  2. → William Optics Flat 73A William Optics Flat 73A For Sale. Price - $185.00. Ad Number: 225146. Posted: 01 Oct 2020 ... William Optics Adjustable Flat73A for Z73 (P-FLAT73A) $ 198.00 This item is out of stock but you can place an order now and we’ll ship when it becomes available.
  3. The William Optics Zenithstar 73 f/5.9 full-frame apochromatic refractor features an air-spaced multicoated doublet objective lens and the premium mechanics and finish that’s typical of William Optics scopes. The objective features Ohara FPL-53 ED glass for superb control of false color and sharp, high-contrast images.
  4. 2019 All New Zenithstar 73 APO. Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying.
  5. → William Optics Flat 73A William Optics Flat 73A For Sale. Price - $185.00. Ad Number: 225146. Posted: 01 Oct 2020 ...
  6. William Optics Flat 73 1.0x Flattener HK$1,490.00. William Optics Flat6A II 0.8x Adjustable Reducer Flattener HK$1,690.00. William Optics Flat61 1.0x Adjustable ... Company Information. All prices listed are in Canadian dollars. We make every effort to ensure our prices are accurate. We do, however, reserve the right to advise you of any errors prior to processing your invoice. William Optics manufactures Refractor telescopes, binoculars, digital camera adapter lenses for telescopes, eyepieces, diagonals and other accessories.
  7. William Optics Flattener 68-III HK$4,700.00 William Optics Flat 73 1.0x Adjustable Flattener HK$1,690.00 William Optics Flat61 1.0x Adjustable Flattener HK$1,690.00
  8. Mar 25, 2019 · William Optics GT71 vs ZS73, which one? - posted in Refractors : Im looking at a few different telescopes, and trying to make some sense of the analysis numbers for each one. I noticed that analysis numbers for the Zenithstar 73 doublet were nearly all lower in the aberration list than the Gran Turismo 71 triplet. The only one that appears to be a higher aberration value is spherical ... Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. Backfocus is adjustable up to 15 mm, and, once set, is held in place by a locking ring. 1.1m members in the astrophotography community. Images of space, taken by amateurs.
  9. Scope: William Optics Zenithstar 73. Flatener: William Optics Flat 73 (1:1) Camera: ZWOASI 294MC-Pro. Guide scope: William Optics Uniguide 50mm. Guiding cam: ASI 120mm-mini. Mount: HEQ5-Pro. Filter: Optolong L-Enhance. Process. Stacked in individual pane in DSS. Open each pane to set the grey level. Use MS Ice to stich the mosaic. Photoshop ... This William Optics ZenithStar 110 Focuser uses configuration eight (MFWO8). This William Optics Configuration nine (MFWO9), shown without the focuser for which is was designed, is similar to all the other MOTOFOCUS units designed for Wiliam Optics focusers Jun 14, 2007 · Please post your photos of your William Optics telescope set up to this group. William Optics is a quality manufacturer of astronomy telescopes and they ship their products to many countries around the world. They're best known for their high quality refracting telescopes.
  10. William Optics Apochromatic refractor AP 73/430 Super ZenithStar 73 Gold OTA. € 799.00. William Optics Carrying bag ZenithStar 71 & 73. € 73.00. Telescope: William Optics ZenithStar 73 APT Software using for image capture Stacked in DeepSkyStacker and Processed in Adobe Photoshop and Lightroom 3 hours and 45 minutes worth of 60 second sub frames 50 Bias frames 30 Flat frames No Dark frames No Light Pollution filter Bortle 6 skies Company Information. All prices listed are in Canadian dollars. We make every effort to ensure our prices are accurate. We do, however, reserve the right to advise you of any errors prior to processing your invoice.
  11. William Optics; Baader Planetarium; TeleVue; Orion; ... Regular Price C$105.00 Sale Price C$73.50. 30% OFF Quick View. ... 19mm Orion Edge-On Flat Field Eyepiece Out ...
  12. William Optics. Page 1 of 1: ... William Optics 2019 Zenithstar 73 II APO (1) £549.00 Add to Basket. ... Flat Field Generators; Focus Masks; Explore Scientific: The Explore Scientific 80 mm f/6 ED Air-Spaced Triplet Refractor Telescope has Hoya FCD100 optics for beautifully sharp, high contrast images. The optical tube assembly is painted classic white, and includes an integrated dew shield on one end and a 2.5" HEX, or hexagonal, rack and pinion focuser.

 

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Sep 21, 2020 · Learn astrophotography tips, camera settings, techniques and more. Beginner-friendly How-To DSLR astrophotography videos and tutorials. Photograph the night sky from your own backyard. My account / Register Home; Educational Science Toys Books, Star Charts and Innovative Gifts William Optics 2" 99% Dielectric Dura Bright Carbon Fiber Mirror Diagonal. ... $73.00. $8.76 shipping. 9 watching. ... 16" Pyrex Flat Telescope Blank.

William Optics Corp.: this violates the warranty terms under the limited product warranty section and invalids any guarantee. Always consult with your local WC Authorized Dealer or with William Optics Corp. for details on how to service your telescope. William Optics 2" Dielectric Diagonal Carbon Fiber Plates D-DIG2D-C 99% Reflect ... $73.00. $8.76 shipping. 7 watching. ... New Precision Flat Telescope Secondary ... When paired with a William Optics field flattener (sold separately), the scope features a flat field across the entire 43.3mm diagonal of a full-frame sensor. With a focal ratio of f/5.9 and focal length of 430nm, the WO Zenithstar 73 is the perfect instrument for imaging extended objects such as the California Nebula, the Rosette Nebula, the ... William Optics 2" Dielectric Diagonal Carbon Fiber Plates D-DIG2D-C 99% Reflect ... $73.00. $8.76 shipping. 7 watching. ... New Precision Flat Telescope Secondary ...

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When paired with a William Optics field flattener (sold separately), the scope features a flat field across the entire 43.3mm diagonal of a full-frame sensor. With a focal ratio of f/5.9 and focal length of 430nm, the WO Zenithstar 73 is the perfect instrument for imaging extended objects such as the California Nebula, the Rosette Nebula, the ... Jun 5, 2019 - The William Optics Zenithstar 73 APO Refractor is a telescope built for astrophotography. This wide field doublet offers premium optics and impressive features in a compact and portable package. See the astrophotography images I've captured with it:

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Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. Backfocus is adjustable up to 15 mm, and, once set, is held in place by a locking ring. William Optics manufactures Refractor telescopes, binoculars, digital camera adapter lenses for telescopes, eyepieces, diagonals and other accessories.

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William Optics Zenithstar 73 £599.00 £549.00. Quick View. William Optics Slide-base UniGuide 50mm Scope with 1.25 inch RotoLock £139.00 £129.00. Quick View. For sale is a used William Optics Zenithstar 73 APO with WO Flat 73 Field Flattener and WO 50mm Rotolock Guidescope. All bought brand new as a package from William Optics earlier this year. No issues. Free shipping. PayPal is the only method of payment accepted and I will cover the PayPal fee. The sample image is from this setup. This William Optics ZenithStar 110 Focuser uses configuration eight (MFWO8). This William Optics Configuration nine (MFWO9), shown without the focuser for which is was designed, is similar to all the other MOTOFOCUS units designed for Wiliam Optics focusers Home > Astrophotography > Optical accessories > Flatteners, Correctors, Reducers > William Optics > William Optics Flattener Flat73A for ZenithStar 73 This product is no longer stocked and therefore cannot be purchased until further notice. question about William optics adjustable Flat 73A for WO Z73. Richard O # 11 Aug, 2019 12:52 hi all, i am having a bit of trouble finding an answer to this question ... Home > Astrophotography > Optical accessories > Flatteners, Correctors, Reducers > William Optics > William Optics Flattener Flat73A for ZenithStar 73 This product is no longer stocked and therefore cannot be purchased until further notice. FLAT 73'and'k'='k. Wish List Compare. RC focuser and 0.8x Reducer Flattener kit . As low as $1,398.00. Add to Cart. Wish ... New William Optics Flattener 68III question about William optics adjustable Flat 73A for WO Z73. Richard O # 11 Aug, 2019 12:52 hi all, i am having a bit of trouble finding an answer to this question ... This William Optics ZenithStar 110 Focuser uses configuration eight (MFWO8). This William Optics Configuration nine (MFWO9), shown without the focuser for which is was designed, is similar to all the other MOTOFOCUS units designed for Wiliam Optics focusers Apr 04, 2019 · I've just purchased a William Optics 73 APO and Flat 73A flattener. My question is: the blurb says that I can fit 2 inch (48mm threaded) filters inside the flattener. For normal use W.O. give the spacing distance on the flattener as 11.4mm but adding the filter will a) shift the focus b)require the flattener's spacing to change ? Currently I image using an ASI071MC PRO, on a William Optics Zenithstar 73, with a Flat73 fieldflattener. And do guiding using an old USB2 version ASI120MM on a 60mm F4 TSL60D. I’m considering switching to using a OAG, in order to make my setup more compact. But I do have some questions/concerns. Apr 15, 2020 · William Optics FLAT73R 0.8x Adjustable Reducer-Flattener is for use with the William Optics Zenithstar 73 OTA. The William Optics Reducer-Flattener is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes. It will deliver an image circle of >44 with a 36×24 mm sensor. William Optics Flat7A GT102 FLT132 GT153. Get a quality workout with our heart rate monitor. When worn around your chest during an activity, it wirelessly transmits your heart rate to your compatible device for instant feedback on how hard you’re working. William Optics ZenithStar 73 Field Flattener with Adjustable Backfocus Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. Brand new adjustable field flattener and 0.8x reducer for the William Optics Zenithstar 73 OTA. It is adjustable as per the image, so that you can set the right spacing that you need for your camera without the need... Aug 19, 2017 · Proctor speaks of “proofs which serve to show … that the Earth is not flat,” and says that man “finds reason to think that the Earth is not flat,” and speaks of certain matters being “explained by supposing” that the Earth is a globe; and says that people have “assured themselves that it is a globe;” but he says, also, that ...

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William Optics Flat6A III 0.8x Adjustable Reducer Flattener HK$1,690.00 William Optics Flat7 0.8x Reducer Be the first to receive our members only promotions and new product releases

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William Optics Gran Turismo 71 APO Refractor Optically Unbeatable. Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra-high precision lens cell. Extremely sharp with excellent color correction. Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces Apr 04, 2019 · I've just purchased a William Optics 73 APO and Flat 73A flattener. My question is: the blurb says that I can fit 2 inch (48mm threaded) filters inside the flattener. For normal use W.O. give the spacing distance on the flattener as 11.4mm but adding the filter will a) shift the focus b)require the flattener's spacing to change ? William Optics ZenithStar 73mm APO – Purchased from First Light Optics, Exeter, UK. March 2019. Why a William Optics 73mm ZenithStar APO. There are loads of this sized telescope around, rebadged, trinkets added, paint jobs. So Why a WO ZS 73 APO ? Originally, I started looking at the WO ZS 61 APO to go on my Sky Watcher, Sky Adventurer Pro ... May 25, 2015 · Review of the William Optics 102 GT By Michael Hyrczyk. I received the GT 102 on Tuesday, March 10th, via UPS. A large gash on one end of the shipping box made my stomach twist a bit, but after opening the package I found a great packaging job and the telescope was well-protected against poor handling by the carrier. The German optics and telescope designer Dipl. Phys. Philipp Keller has designed this corrector. The corrector can be used with the following Newtonian telescopes: Basically the corrector can be used with any Newtonian starting from f/3 to f/5. The adapter shifts the focal plane approx. 15-16 millimetres away from the tube. question about William optics adjustable Flat 73A for WO Z73. Richard O # 11 Aug, 2019 12:52 hi all, i am having a bit of trouble finding an answer to this question ... Note: For DSLRs, it's highly recommended to use a William Optics T mount adapter in order to achieve focus. From the beginning, the goal was to create the best possible design for an affordable, small, lightweight and fast Apochromatic refractor for astrophotography needs. The unique optical design includes the highest Awesome little scope for wide field. Purchased earlier this year and used just a few times. No dust, dew spot, chips, scratches or dents. It's perfect. Includes matching guide scope, the Flat 73 field flattener and the 2.5" optional camera angle rotator. Nice savings on an as new package.

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I'm selling my almost new gold Z73 to get a larger refractor. This scope is about 2 months old. I'm including the Flat 73A field flattener with it. The narrowband image of the Pelican and North American nebulae is the last image I took with the scope about 4 days ago. Original shipping box. My account / Register Home; Educational Science Toys Books, Star Charts and Innovative Gifts I paired this refractor with a William Optics 1:1 field flattener (a suggested flattener by my supplier, no focal length change), and an Orion SkyGlow Imaging filter (light pollution killer). This setup gives me a corrected field of view (not 100% flat, but close to it), and allows me to take longer exposures in my light-polluted location. Telescope: William Optics ZenithStar 73 APT Software using for image capture Stacked in DeepSkyStacker and Processed in Adobe Photoshop and Lightroom 3 hours and 45 minutes worth of 60 second sub frames 50 Bias frames 30 Flat frames No Dark frames No Light Pollution filter Bortle 6 skies The Lacerta 72/432 FPL-53 ED APO Apochromatic Telescope is a good alternative to the William Optics Megrez 72 as the same Megrez objective lens has been used to build this telescope. The best colour correction that can be achieved in an ED doublet was achieved by choosing a high quality Ohara/Japan glass material of FPL53 with NBM51 partner ... William Optics Zenithstar 73 APO Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. Imaging telescopes or lenses:William Optics Zenithstar 73 APO. Imaging cameras:ZWO ASI533MC Pro. Mounts:Sky-Watcher AZ-EQ6 Pro. Guiding telescopes or lenses:William Optics 50/200 Guidescope. Guiding cameras:ZWO ASI120MM Mini. Focal reducers:William Optics Flat 73A Explore Scientific: The Explore Scientific 80 mm f/6 ED Air-Spaced Triplet Refractor Telescope has Hoya FCD100 optics for beautifully sharp, high contrast images. The optical tube assembly is painted classic white, and includes an integrated dew shield on one end and a 2.5" HEX, or hexagonal, rack and pinion focuser.

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Apr 15, 2020 · William Optics FLAT73R 0.8x Adjustable Reducer-Flattener is for use with the William Optics Zenithstar 73 OTA. The William Optics Reducer-Flattener is a great accessory that improves image quality by being able to adjust spacing without the need for extension tubes. It will deliver an image circle of >44 with a 36×24 mm sensor. Oct 12, 2018 · The William Optics Zenithstar 73 APO is a compact F/5.9 doublet apochromatic refractor with an impressive entourage of accessories to get you up and running. The Flat 73 1:1 field flattener is an essential upgrade if you plan on imaging with a full frame camera. In it, Kepler described the inverse-square law governing the intensity of light, reflection by flat and curved mirrors, and principles of pinhole cameras, as well as the astronomical implications of optics such as parallax and the apparent sizes of heavenly bodies. Sep 16, 2017 · William Optics lists the Flat 61 for Z61 as a recommended accessory for this telescope, and I recommend that you get one too. The Flat61 was designed to be a perfect match for the F/5.9 focal ratio of this telescope, meaning that your images will remain crisp to the edge of the field. Gerd Neumann jr. ND 0.6 neutral density filter for 100mm and 160mm Aurora flat-field panels ... (73) Jurassic Jewellery ... William Optics (100) Willmann-Bell (12 ... 2018 Donruss Football. 2016 Donruss Football. 2018 Bowman. 2017 Bowman Platinum. 2020 Donruss NASCAR. 2020 Bowman 1st Edition #BFE-9 Aaron Shortridge - Pittsburgh Pirates. 2020 Star Wars. 2020 Limited. - ر.ع.166.000 - Take your pick for this Portable Visual Bundle" William Optics Zenithstar 73 II William Optocs Zenithstar 61 II iOptron Cube Pro ASC 2″ 90-deg 99% Diagonal (Refractor) William Optics Binoviewer complete package (BaK4) ASC Super Plossl Bundle Eyepiece Kit 1.25″

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William Optics Adjustable Flat73A for Z73 (P-FLAT73A) $ 198.00 This item is out of stock but you can place an order now and we’ll ship when it becomes available. Takahashi - Mewlon CR 0.73x Reducer Effective focal ratio Effective focal length 1825mm Image circle 35mm ø Imaging circle 1.1&ordm;</p> <p>Metal back distance** 72.8mm</p> <p>This adapter also functions with FS William Optics Zenithstar 73 £599.00 £549.00. Quick View. William Optics Slide-base UniGuide 50mm Scope with 1.25 inch RotoLock £139.00 £129.00. Quick View. When paired with a William Optics field flattener (sold separately), the scope features a flat field across the entire 43.3mm diagonal of a full-frame sensor. With a focal ratio of f/5.9 and focal length of 430nm, the WO Zenithstar 73 is the perfect instrument for imaging extended objects such as the California Nebula, the Rosette Nebula, the ... FLAT 73'and'k'='k. Wish List Compare. RC focuser and 0.8x Reducer Flattener kit . As low as $1,398.00. Add to Cart. Wish ... New William Optics Flattener 68III William Optics Zenithstar 73 APO Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. 2019 All New Zenithstar 73 APO. Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. William Optics Adjustable Flat73A For Z73. An Adjustable Flat73A Flattener for your Z73 Camera: The M63 Threads goes into your focuser. Adjustment instructions by pictures below: Manufacturer's Note: Requires a 48 mm Camera T-mount to connect to your camera. William Optics Flat6A III 0.8x Adjustable Reducer Flattener HK$1,690.00 William Optics Flat7 0.8x Reducer Be the first to receive our members only promotions and new product releases

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William Optics GT71 71mm f/5.9 Triplet APO 20th Anniversary Limited Edition HK$8,490.00. William Optics GT71 APO is a f/5.9 air-spaced triplet FPL-53 apochromat. This package includes a 0.8x Flat6A-81 reducer cum flattener specially designed for GT71 to transform it into a f/4.7 imaging APO covering full frame... May 25, 2015 · Review of the William Optics 102 GT By Michael Hyrczyk. I received the GT 102 on Tuesday, March 10th, via UPS. A large gash on one end of the shipping box made my stomach twist a bit, but after opening the package I found a great packaging job and the telescope was well-protected against poor handling by the carrier. Explore Scientific: The Explore Scientific 80 mm f/6 ED Air-Spaced Triplet Refractor Telescope has Hoya FCD100 optics for beautifully sharp, high contrast images. The optical tube assembly is painted classic white, and includes an integrated dew shield on one end and a 2.5" HEX, or hexagonal, rack and pinion focuser.

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William Optics ZenithStar 73 Field Flattener with Adjustable Backfocus Using this adjustable field flattener makes astrophotography with the William Optics 73 mm ZenithStar APO Refractor even better. This flattener contains a 63 mm opening on one end that threads into the telescope, and an M48x0.75 thread on the opposite end. Sep 16, 2017 · William Optics lists the Flat 61 for Z61 as a recommended accessory for this telescope, and I recommend that you get one too. The Flat61 was designed to be a perfect match for the F/5.9 focal ratio of this telescope, meaning that your images will remain crisp to the edge of the field. Telescope: William Optics ZenithStar 73 APT Software using for image capture Stacked in DeepSkyStacker and Processed in Adobe Photoshop and Lightroom 3 hours and 45 minutes worth of 60 second sub frames 50 Bias frames 30 Flat frames No Dark frames No Light Pollution filter Bortle 6 skies Currently I image using an ASI071MC PRO, on a William Optics Zenithstar 73, with a Flat73 fieldflattener. And do guiding using an old USB2 version ASI120MM on a 60mm F4 TSL60D. I’m considering switching to using a OAG, in order to make my setup more compact. But I do have some questions/concerns.

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Wo Field Flattener Sep 21, 2020 · Learn astrophotography tips, camera settings, techniques and more. Beginner-friendly How-To DSLR astrophotography videos and tutorials. Photograph the night sky from your own backyard. Imaging telescopes or lenses:William Optics Zenithstar 73 APO. Imaging cameras:ZWO ASI533MC Pro. Mounts:Sky-Watcher AZ-EQ6 Pro. Guiding telescopes or lenses:William Optics 50/200 Guidescope. Guiding cameras:ZWO ASI120MM Mini. Focal reducers:William Optics Flat 73A

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Takahashi - Mewlon CR 0.73x Reducer Effective focal ratio Effective focal length 1825mm Image circle 35mm ø Imaging circle 1.1&ordm;</p> <p>Metal back distance** 72.8mm</p> <p>This adapter also functions with FS William Optics; Baader Planetarium; TeleVue; Orion; ... Regular Price C$105.00 Sale Price C$73.50. 30% OFF Quick View. ... 19mm Orion Edge-On Flat Field Eyepiece Out ... Aug 19, 2017 · Proctor speaks of “proofs which serve to show … that the Earth is not flat,” and says that man “finds reason to think that the Earth is not flat,” and speaks of certain matters being “explained by supposing” that the Earth is a globe; and says that people have “assured themselves that it is a globe;” but he says, also, that ... William Optics Gran Turismo 71 APO Refractor Optically Unbeatable. Triplet air-spaced objective (FPL-53) in adjustable CNC machined ultra-high precision lens cell. Extremely sharp with excellent color correction. Each lens is Fully Multi-Coated with a special super-high transmission coating (STM Coating) on all surfaces William Optics Zenithstar 73 £599.00 £549.00. Quick View. William Optics Slide-base UniGuide 50mm Scope with 1.25 inch RotoLock £139.00 £129.00. Quick View. Flat Box USB 250mm. Vendor Artesky Regular price ... Zenithstar 73 APO (A-Z73II) William Optics. William Optics. Vendor William Optics Regular price $ 648.00 William Optics Zenithstar 73 APO Zenithstar 73 is a greatly versatile and portable refractor telescope for beginners and veterans alike. Designed for both astrophotography and wildlife photography, high power visual observing through the Zenithstar 73 is also hugely satisfying. Aug 19, 2017 · Proctor speaks of “proofs which serve to show … that the Earth is not flat,” and says that man “finds reason to think that the Earth is not flat,” and speaks of certain matters being “explained by supposing” that the Earth is a globe; and says that people have “assured themselves that it is a globe;” but he says, also, that ...