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William Optics Black Friday

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Original price $158.00
Original price $158.00 - Original price $158.00
Original price $158.00
Current price $142.20
$142.20 - $142.20
Current price $142.20

William Optics 1.25" DURA BRIGHT Dielectric Diagonal (D-125D-C-DB)

William Optics

William Optics 1.25" DURA BRIGHT Dielectric Diagonal Introducing New model William Optics Dura-Bright diagonal - a dramatic step forward in the evo...

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Original price $158.00
Original price $158.00 - Original price $158.00
Original price $158.00
Current price $142.20
$142.20 - $142.20
Current price $142.20
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Original price $422.00
Original price $422.00 - Original price $422.00
Original price $422.00
Current price $379.80
$379.80 - $379.80
Current price $379.80

William Optics 0.8x Flattener/Reducer for Fluorostar 91 (P-FLAT6AIII-M92)

William Optics

William Optics 0.8x Flattener/Reducer Flat6AIII Special Edition For Fluorostar 91 All New Adjustable Flat6AIII with M92 thread adapter for use wi...

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Original price $422.00
Original price $422.00 - Original price $422.00
Original price $422.00
Current price $379.80
$379.80 - $379.80
Current price $379.80
Save $42.20 Save $0.00
Original price $131.00
Original price $131.00 - Original price $131.00
Original price $131.00
Current price $117.90
$117.90 - $117.90
Current price $117.90

William Optics V Series 290mm Dovetail Plate (M-PV-LII-RD)

William Optics

William Optics V Series Dovetail Plate William Optics' new Dovetail Plate expands your options: you can now choose a fully-anodized WO product to m...

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Original price $131.00
Original price $131.00 - Original price $131.00
Original price $131.00
Current price $117.90
$117.90 - $117.90
Current price $117.90
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Original price $2,797.00
Original price $2,797.00 - Original price $2,797.00
Original price $2,797.00
Current price $2,657.00
$2,657.00 - $2,657.00
Current price $2,657.00

William Optics Ultra-Cat 76 LIMITED 30th Anniversary Edition + UniGuide 32mm

William Optics

William Optics Ultra-Cat 76 – Limited 30th Anniversary Edition with UniGuide 32mm   LIMITED EDITION   A Milestone Worth Celebrating The Cat series ...

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Original price $2,797.00
Original price $2,797.00 - Original price $2,797.00
Original price $2,797.00
Current price $2,657.00
$2,657.00 - $2,657.00
Current price $2,657.00
Save $140.00 Save $0.00
Original price $92.00
Original price $92.00 - Original price $92.00
Original price $92.00
Current price $82.80
$82.80 - $82.80
Current price $82.80

William Optics Slide-Base 50mm Guiding Rings with Adjustment Screws (M-GR50SL)

William Optics

William Optics Slide-base 50mm Guiding Rings with Adjustment Screws Weight:260g In the Box William Optics Slide-Base 50mm Guiding Rings 6 x Adju...

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Original price $92.00
Original price $92.00 - Original price $92.00
Original price $92.00
Current price $82.80
$82.80 - $82.80
Current price $82.80
Save $9.20 Save $0.00
Original price $4,376.00
Original price $4,376.00 - Original price $4,376.00
Original price $4,376.00
Current price $3,282.00
$3,282.00 - $3,282.00
Current price $3,282.00

William Optics Redcat 51 and ASI533MC Pro on AVX Mount - USED (L-RC51RDIII-U)

William Optics

William Optics Redcat 51 and ASI533MC Pro on AVX Mount - USED This Astrophotography kit has been Barely Used - Practically New ! This telescope is ...

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Original price $4,376.00
Original price $4,376.00 - Original price $4,376.00
Original price $4,376.00
Current price $3,282.00
$3,282.00 - $3,282.00
Current price $3,282.00
Sold out
Original price $2,877.00
Original price $2,877.00 - Original price $2,877.00
Original price $2,877.00
Current price $2,733.15
$2,733.15 - $2,733.15
Current price $2,733.15

William Optics Pleiades 68 APO F/3.8 WIFD (T-P-68BU)

William Optics

William Optics Pleiades 68 APO F/3.8 WIFD Pleiades 68, 7-element imaging APO, F/3.8 WIFD. Comes with soft carry bag, dovetail, handle bar, M48 and ...

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Original price $2,877.00
Original price $2,877.00 - Original price $2,877.00
Original price $2,877.00
Current price $2,733.15
$2,733.15 - $2,733.15
Current price $2,733.15
Save $143.85 Save $0.00
Original price $5,469.00
Original price $5,469.00 - Original price $5,469.00
Original price $5,469.00
Current price $5,195.55
$5,195.55 - $5,195.55
Current price $5,195.55

William Optics Pleiades 111 APO F/4.8 WIFD (T-P-111BU)

William Optics

William Optics Pleiades 111 APO F/4.8 WIFD Pleiades 111, 7-element imaging APO, F/4.8 WIDF. Comes with soft carry bag, dovetail, handle bar, M48 an...

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Original price $5,469.00
Original price $5,469.00 - Original price $5,469.00
Original price $5,469.00
Current price $5,195.55
$5,195.55 - $5,195.55
Current price $5,195.55
Save $273.45 Save $0.00
Original price $65.00
Original price $65.00 - Original price $65.00
Original price $65.00
Current price $58.50
$58.50 - $58.50
Current price $58.50

William Optics Micro 4/3 48mm T mount for Olympus - Space Gray (TM-MFT-M48)

William Optics

William Optics Micro 4/3 48mm T mount for Olympus - Space Gray   In the Box William Optics Micro 4/3 48mm T mount for Olympus - Space Gray (WO-YE...

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Original price $65.00
Original price $65.00 - Original price $65.00
Original price $65.00
Current price $58.50
$58.50 - $58.50
Current price $58.50
Save $6.50 Save $0.00
Original price $92.00
Original price $92.00 - Original price $92.00
Original price $92.00
Current price $82.80
$82.80 - $82.80
Current price $82.80

William Optics M63 to M48 Photo Adapter (P-PAM63-48)

William Optics

William Optics M63 to M48 Photo Adapter    Technical Specifications Weight:185g In the Box William Optics M63 to M48 Photo adapter Warranty &...

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Original price $92.00
Original price $92.00 - Original price $92.00
Original price $92.00
Current price $82.80
$82.80 - $82.80
Current price $82.80
Save $9.20 Save $0.00
Original price $1,438.00
Original price $1,438.00 - Original price $1,438.00
Original price $1,438.00
Current price $1,366.10
$1,366.10 - $1,366.10
Current price $1,366.10

William Optics Gran Turismo 71 Triplet + FLAT6AIII Bundle

William Optics

William Optics Gran Turismo 71 Triplet APO f/5.9 + FLAT6AIII Bundle   Technical Specifications Aperture 71mm Focal Length 419mm Fo...

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Original price $1,438.00
Original price $1,438.00 - Original price $1,438.00
Original price $1,438.00
Current price $1,366.10
$1,366.10 - $1,366.10
Current price $1,366.10
Save $71.90 Save $0.00
Original price $4,749.00 - Original price $5,043.00
Original price $4,749.00 - Original price $5,043.00
Original price $4,749.00
$4,511.55 - $4,790.85
$4,511.55 - $4,790.85
Current price $4,511.55

William Optics Fluorostar 120 f/6.5 Triplet Refractor (A-F120)

William Optics

William Optics Fluorostar 120 A precision-crafted apochromatic refractor designed to meet the exacting demands of modern astrophotographers. Wit...

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Original price $4,749.00 - Original price $5,043.00
Original price $4,749.00 - Original price $5,043.00
Original price $4,749.00
$4,511.55 - $4,790.85
$4,511.55 - $4,790.85
Current price $4,511.55
Save up to $252.15 Save $0.00
Original price $372.00
Original price $372.00 - Original price $372.00
Original price $372.00
Current price $334.80
$334.80 - $334.80
Current price $334.80

William Optics Flattener 1x for GT 71/81 (P-FLAT-GT)

William Optics

William Optics Flattener 1x for GT 71/81 The William Optics FLAT GT is a high-performance 1.0x field flattener designed for the Gran Turismo 71 and...

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Original price $372.00
Original price $372.00 - Original price $372.00
Original price $372.00
Current price $334.80
$334.80 - $334.80
Current price $334.80
Save $37.20 Save $0.00
Original price $330.00
Original price $330.00 - Original price $330.00
Original price $330.00
Current price $297.00
$297.00 - $297.00
Current price $297.00

William Optics Flat73A for Z73 (P-FLAT73A)

William Optics

William Optics Flat73A for Z73            Technical Specifications Telescope Side Connection M63x1 Thread- Male Camera Side Connection ...

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Original price $330.00
Original price $330.00 - Original price $330.00
Original price $330.00
Current price $297.00
$297.00 - $297.00
Current price $297.00
Save $33.00 Save $0.00
Original price $138.00
Original price $138.00 - Original price $138.00
Original price $138.00
Current price $124.20
$124.20 - $124.20
Current price $124.20

William Optics 90° 1.25" Erect Prism (D-EP90-125II)

William Optics

William Optics 90° 1.25" Erect Prism This 1.25" 90 deg. erecting prism will very happy to be used with that nice premium refractor of yours! Perf...

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Original price $138.00
Original price $138.00 - Original price $138.00
Original price $138.00
Current price $124.20
$124.20 - $124.20
Current price $124.20
Save $13.80 Save $0.00
Original price $180.00
Original price $180.00 - Original price $180.00
Original price $180.00
Current price $162.00
$162.00 - $162.00
Current price $162.00

William Optics 50mm Guide Scope in Red (M-GR50RIII)

William Optics

William Optics 50mm Guide Scope The RotoLock fully multicoated William Optics 50mm Guide Scope f/4 fits perfectly on your William Optics and other ...

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Original price $180.00
Original price $180.00 - Original price $180.00
Original price $180.00
Current price $162.00
$162.00 - $162.00
Current price $162.00
Save $18.00 Save $0.00
Original price $81.00
Original price $81.00 - Original price $81.00
Original price $81.00
Current price $72.90
$72.90 - $72.90
Current price $72.90

William Optics 48mm T mount for Nikon Z Mirrorless Camera (TM-NK-Z-M48)

William Optics

William Optics 48mm T mount for Nikon Z Mirrorless Camera This high precision T-Mount has 48mm threads with outer hard black colour anodizing, and ...

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Original price $81.00
Original price $81.00 - Original price $81.00
Original price $81.00
Current price $72.90
$72.90 - $72.90
Current price $72.90
Save $8.10 Save $0.00
Original price $65.00
Original price $65.00 - Original price $65.00
Original price $65.00
Current price $58.50
$58.50 - $58.50
Current price $58.50

William Optics 48mm T mount for Fuji FX (TM-FJ-X-M48)

William Optics

William Optics 48mm T mount for Fuji FX This high precision T-Mount has 48mm threads with outer hard black color anodizing and its made from High q...

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Original price $65.00
Original price $65.00 - Original price $65.00
Original price $65.00
Current price $58.50
$58.50 - $58.50
Current price $58.50
Save $6.50 Save $0.00
Original price $197.00
Original price $197.00 - Original price $197.00
Original price $197.00
Current price $177.30
$177.30 - $177.30
Current price $177.30

William Optics 1.25" inch RedCat Erecting Prism

William Optics

William Optics 1.25" inch RedCat Erecting Prism High quality erecting prism with Red anodized plate, the complete housing is made by 6061T Alumin...

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Original price $197.00
Original price $197.00 - Original price $197.00
Original price $197.00
Current price $177.30
$177.30 - $177.30
Current price $177.30
Save $19.70 Save $0.00
Original price $63.00
Original price $63.00 - Original price $63.00
Original price $63.00
Current price $56.70
$56.70 - $56.70
Current price $56.70

Williiam Optics 2x Barlow nosepiece for Binoviewer (E-BINO-B2)

William Optics

Williiam Optics 2x Barlow nosepiece for Binoviewer This 2-power nose piece barlow makes it easier to focus with most telescope. It can be screwed o...

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Original price $63.00
Original price $63.00 - Original price $63.00
Original price $63.00
Current price $56.70
$56.70 - $56.70
Current price $56.70
Save $6.30 Save $0.00
Original price $4,161.00
Original price $4,161.00 - Original price $4,161.00
Original price $4,161.00
Current price $3,065.00
$3,065.00 - $3,065.00
Current price $3,065.00

William Optics ZenithStar 61II Doublet f/5.9 KIT - USED (A-Z61IIRD-KIT-U)

William Optics

William Optics ZenithStar 61II Doublet f/5.9 KIT - USED Zenithstar 61 APO Photo Performance by Jerry Huang Technical Specifications Focal ...

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Original price $4,161.00
Original price $4,161.00 - Original price $4,161.00
Original price $4,161.00
Current price $3,065.00
$3,065.00 - $3,065.00
Current price $3,065.00
Save $1,096.00 Save $0.00
Original price $863.00
Original price $863.00 - Original price $863.00
Original price $863.00
Current price $819.85
$819.85 - $819.85
Current price $819.85

William Optics ZenithStar 61II Doublet f/5.9

William Optics

William Optics ZenithStar 61II Doublet APO f/5.9 Zenithstar 61 APO Photo Performance by Jerry Huang Technical Specifications Focal Length:...

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Original price $863.00
Original price $863.00 - Original price $863.00
Original price $863.00
Current price $819.85
$819.85 - $819.85
Current price $819.85
Save $43.15 Save $0.00
Original price $2,719.00
Original price $2,719.00 - Original price $2,719.00
Original price $2,719.00
Current price $2,583.05
$2,583.05 - $2,583.05
Current price $2,583.05

William Optics WIFD Ultra-Cat 76 f/4.8 APO (T-C-76)

William Optics

William Optics WIFD Ultra-Cat 76 f/4.8 APO  The William Optics Ultra-Cat 76 is a powerful astrograph designed for capturing stunning deep-space ima...

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Original price $2,719.00
Original price $2,719.00 - Original price $2,719.00
Original price $2,719.00
Current price $2,583.05
$2,583.05 - $2,583.05
Current price $2,583.05
Save $135.95 Save $0.00
Original price $5,181.00
Original price $5,181.00 - Original price $5,181.00
Original price $5,181.00
Current price $4,921.95
$4,921.95 - $4,921.95
Current price $4,921.95

William Optics WIFD Ultra-Cat 108 f/4.8 APO (T-C-108)

William Optics

William Optics WIFD Ultra-Cat 108 f/4.8 APO  The William Optics UltraCat108 is a cutting-edge 108mm apochromatic refractor designed for astrophotog...

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Original price $5,181.00
Original price $5,181.00 - Original price $5,181.00
Original price $5,181.00
Current price $4,921.95
$4,921.95 - $4,921.95
Current price $4,921.95
Save $259.05 Save $0.00
Original price $130.00
Original price $130.00 - Original price $130.00
Original price $130.00
Current price $117.00
$117.00 - $117.00
Current price $117.00

William Optics Super high precision COPPER T-mount for Nikon full frame (YE-TR-BR48-N)

William Optics

Super high precision COPPER T-mount for Nikon full frame  T-mount for Nikon full-frame camera copper version. Made from high quality copper materia...

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Original price $130.00
Original price $130.00 - Original price $130.00
Original price $130.00
Current price $117.00
$117.00 - $117.00
Current price $117.00
Save $13.00 Save $0.00
Original price $90.00
Original price $90.00 - Original price $90.00
Original price $90.00
Current price $81.00
$81.00 - $81.00
Current price $81.00

William Optics Super High Precision COPPER T-Mount for Canon EOS Full Frame (YE-TR-BR48-C)

William Optics

William Optics Super High Precision COPPER T-Mount for Canon EOS Full Frame T-mount for EOS DSLR camera copper version. Made from high quality copp...

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Original price $90.00
Original price $90.00 - Original price $90.00
Original price $90.00
Current price $81.00
$81.00 - $81.00
Current price $81.00
Save $9.00 Save $0.00
Original price $2,446.00
Original price $2,446.00 - Original price $2,446.00
Original price $2,446.00
Current price $2,323.70
$2,323.70 - $2,323.70
Current price $2,323.70

William Optics Spacecat 61 WIFD (T-C-61SG)

William Optics

William Optics Spacecat 61 WIFD Discover a new dimension in astrophotography with the Spacecat 61 Astrograph f/4.9, a strikingly sleek telescope en...

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Original price $2,446.00
Original price $2,446.00 - Original price $2,446.00
Original price $2,446.00
Current price $2,323.70
$2,323.70 - $2,323.70
Current price $2,323.70
Save $122.30 Save $0.00
Original price $125.00
Original price $125.00 - Original price $125.00
Original price $125.00
Current price $112.50
$112.50 - $112.50
Current price $112.50

William Optics SCT to 1.25" RotoLock Visual Back Adapter (F-ROTO-A2-125-SCT-TA)

William Optics

William Optics SCT to 1.25" RotoLock Visual Back Adapter The new RotoLock series of adapters from William Optics may well set the "gold' standard ...

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Original price $125.00
Original price $125.00 - Original price $125.00
Original price $125.00
Current price $112.50
$112.50 - $112.50
Current price $112.50
Save $12.50 Save $0.00
Original price $25,917.00
Original price $25,917.00 - Original price $25,917.00
Original price $25,917.00
Current price $24,621.15
$24,621.15 - $24,621.15
Current price $24,621.15

William Optics Pleiades 181 APO F/5.5 WIFD (T-P-181RD)

William Optics

William Optics Pleiades 181 APO F/5.5 WIFD Elevate your stargazing and astrophotography experience with the newly launched Pleiades 181 by William ...

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Original price $25,917.00
Original price $25,917.00 - Original price $25,917.00
Original price $25,917.00
Current price $24,621.15
$24,621.15 - $24,621.15
Current price $24,621.15
Save $1,295.85 Save $0.00
Original price $2,877.00 - Original price $3,207.00
Original price $2,877.00 - Original price $3,207.00
Original price $2,877.00
$2,733.15 - $3,046.65
$2,733.15 - $3,046.65
Current price $2,733.15

William Optics NEW Internal Focus Design Gran Turismo 81 WIFD (GT81-WIFD)

William Optics

William Optics GT81 Internal Focus Design WIFD Apochromatic Series THE NEW GAME CHANGER Introducing the WILLIAM OPTICS Internal Focus Design (W...

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Original price $2,877.00 - Original price $3,207.00
Original price $2,877.00 - Original price $3,207.00
Original price $2,877.00
$2,733.15 - $3,046.65
$2,733.15 - $3,046.65
Current price $2,733.15
Save up to $160.35 Save $0.00
Original price $144.00
Original price $144.00 - Original price $144.00
Original price $144.00
Current price $129.60
$129.60 - $129.60
Current price $129.60

William Optics iOptron Skyguider Pro Dec adapter & Vixen style Clamp

William Optics

William Optics iOptron Skyguider Pro Dec adapter & Vixen style Clamp weight:370g   In the Box SP90 Saddle Plate for Vixen Dovetails iOptr...

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Original price $144.00
Original price $144.00 - Original price $144.00
Original price $144.00
Current price $129.60
$129.60 - $129.60
Current price $129.60
Save $14.40 Save $0.00
Original price $2,214.00 - Original price $2,258.00
Original price $2,214.00 - Original price $2,258.00
Original price $2,214.00
$2,103.30 - $2,145.10
$2,103.30 - $2,145.10
Current price $2,103.30

William Optics Gran Turismo 81 IV Triplet APO f/5.9

William Optics

William Optics Gran Turismo 81 IV Triplet APO f/5.9 The William Optics Gran Turismo 81 IV Triplet APO f/5.9 has been designed to deliver excellent ...

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Original price $2,214.00 - Original price $2,258.00
Original price $2,214.00 - Original price $2,258.00
Original price $2,214.00
$2,103.30 - $2,145.10
$2,103.30 - $2,145.10
Current price $2,103.30
Save up to $112.90 Save $0.00
Original price $1,344.00
Original price $1,344.00 - Original price $1,344.00
Original price $1,344.00
Current price $1,276.80
$1,276.80 - $1,276.80
Current price $1,276.80

William Optics Gran Turismo 71 Triplet APO f/5.9 (A-F71GTII)

William Optics

William Optics Gran Turismo 71 Triplet APO f/5.9       Technical Specifications Aperture 71mm Focal Length 419mm Focal Ratio f/5.9 Camera...

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Original price $1,344.00
Original price $1,344.00 - Original price $1,344.00
Original price $1,344.00
Current price $1,276.80
$1,276.80 - $1,276.80
Current price $1,276.80
Save $67.20 Save $0.00
Original price $10,653.00
Original price $10,653.00 - Original price $10,653.00
Original price $10,653.00
Current price $10,120.35
$10,120.35 - $10,120.35
Current price $10,120.35

William Optics Fluorostar 156 with 3.7" Rack & Pinion Focuser

William Optics

William Optics Fluorostar 156 A premium apochromatic refractor designed for both avid stargazers and serious astrophotographers. This telescope fe...

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Original price $10,653.00
Original price $10,653.00 - Original price $10,653.00
Original price $10,653.00
Current price $10,120.35
$10,120.35 - $10,120.35
Current price $10,120.35
Save $532.65 Save $0.00
Original price $10,662.00
Original price $10,662.00 - Original price $10,662.00
Original price $10,662.00
Current price $10,128.90
$10,128.90 - $10,128.90
Current price $10,128.90

William Optics Fluorostar 156 with 3.5" Feather Touch Focuser

William Optics

William Optics Fluorostar 156 with 3.5" Feather Touch Focuser   Technical Specifications Focal Length: 1217mm Diameter: 156mm A...

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Original price $10,662.00
Original price $10,662.00 - Original price $10,662.00
Original price $10,662.00
Current price $10,128.90
$10,128.90 - $10,128.90
Current price $10,128.90
Save $533.10 Save $0.00
Original price $6,304.00
Original price $6,304.00 - Original price $6,304.00
Original price $6,304.00
Current price $5,988.80
$5,988.80 - $5,988.80
Current price $5,988.80

William Optics Fluorostar 132 with 3.7" Rack and Pinion Focuser

William Optics

William Optics Fluorostar 132 Triplet APO f/7 with 3.7" Rack and Pinion Focuser Simply put: a joy to use. You will be blown away by the small deta...

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Original price $6,304.00
Original price $6,304.00 - Original price $6,304.00
Original price $6,304.00
Current price $5,988.80
$5,988.80 - $5,988.80
Current price $5,988.80
Save $315.20 Save $0.00
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