Skip to content

William Optics Deals

Discover our William Optics deals at Astronomy Plus. Whether you enjoy astrophotography or visual observing, save on a selection of William Optics telescopes and accessories.

Filters
$
$
Original price $1,929.00
Original price $1,929.00 - Original price $1,929.00
Original price $1,929.00
Current price $1,383.00
$1,383.00 - $1,383.00
Current price $1,383.00

William Optics Ultra-Cat 56 (T-C-56BR)

William Optics

William Optics Ultra-Cat 56 The Ultra-Cat 56 is a high-performance 56mm apochromatic refractor, engineered for astrophotographers who demand except...

View full details
Original price $1,929.00
Original price $1,929.00 - Original price $1,929.00
Original price $1,929.00
Current price $1,383.00
$1,383.00 - $1,383.00
Current price $1,383.00
Save $546.00 Save $0.00
Original price $5,517.00
Original price $5,517.00 - Original price $5,517.00
Original price $5,517.00
Current price $5,075.64
$5,075.64 - $5,075.64
Current price $5,075.64

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...

View full details
Original price $5,517.00
Original price $5,517.00 - Original price $5,517.00
Original price $5,517.00
Current price $5,075.64
$5,075.64 - $5,075.64
Current price $5,075.64
Save $441.36 Save $0.00
Original price $3,033.00
Original price $3,033.00 - Original price $3,033.00
Original price $3,033.00
Current price $2,790.36
$2,790.36 - $2,790.36
Current price $2,790.36

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...

View full details
Original price $3,033.00
Original price $3,033.00 - Original price $3,033.00
Original price $3,033.00
Current price $2,790.36
$2,790.36 - $2,790.36
Current price $2,790.36
Save $242.64 Save $0.00
Original price $275.00
Original price $275.00 - Original price $275.00
Original price $275.00
Current price $261.25
$261.25 - $261.25
Current price $261.25

William Optics UniGuide 50mm Slide-Base Guide Scope

William Optics

William Optics UniGuide 50mm Slide-Base Guide Scope Elevate your astrophotography with the William Optics UniGuide 50mm f/4.0, designed for precisi...

View full details
Original price $275.00
Original price $275.00 - Original price $275.00
Original price $275.00
Current price $261.25
$261.25 - $261.25
Current price $261.25
Save $13.75 Save $0.00
Original price $189.00
Original price $189.00 - Original price $189.00
Original price $189.00
Current price $179.55
$179.55 - $179.55
Current price $179.55

William Optics Slide-Base UniGuide 32mm Scope

William Optics

William Optics Slide-Base UniGuide 32mm Scope Enhance your astrophotography setup with the William Optics UniGuide 32mm f/3.75, a compact and versa...

View full details
Original price $189.00
Original price $189.00 - Original price $189.00
Original price $189.00
Current price $179.55
$179.55 - $179.55
Current price $179.55
Save $9.45 Save $0.00
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75

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...

View full details
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75
Save $5.25 Save $0.00
Original price $130.00
Original price $130.00 - Original price $130.00
Original price $130.00
Current price $123.50
$123.50 - $123.50
Current price $123.50

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...

View full details
Original price $130.00
Original price $130.00 - Original price $130.00
Original price $130.00
Current price $123.50
$123.50 - $123.50
Current price $123.50
Sold out
Original price $149.00
Original price $149.00 - Original price $149.00
Original price $149.00
Current price $141.55
$141.55 - $141.55
Current price $141.55

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...

View full details
Original price $149.00
Original price $149.00 - Original price $149.00
Original price $149.00
Current price $141.55
$141.55 - $141.55
Current price $141.55
Save $7.45 Save $0.00
Original price $42.00
Original price $42.00 - Original price $42.00
Original price $42.00
Current price $39.90
$39.90 - $39.90
Current price $39.90

William Optics Riser Block for 51mm Ring (M-BK51-BL)

William Optics

William Optics Riser Block for 51mm Ring Riser block for redcat 51 ring. Rises the telescope of 20mm. Fits Cat 51, MIniCat, and Z-61 telescope ring...

View full details
Original price $42.00
Original price $42.00 - Original price $42.00
Original price $42.00
Current price $39.90
$39.90 - $39.90
Current price $39.90
Save $2.10 Save $0.00
Original price $273.00
Original price $273.00 - Original price $273.00
Original price $273.00
Current price $259.35
$259.35 - $259.35
Current price $259.35

William Optics ZWO EAF Mounting Bracket for WIFD System

William Optics

William Optics ZWO EAF Mounting Bracket for WIFD System Compatibility Telescope Focuser: All of WO focuser with modular focusing mechanism WIFD f...

View full details
Original price $273.00
Original price $273.00 - Original price $273.00
Original price $273.00
Current price $259.35
$259.35 - $259.35
Current price $259.35
Save $13.65 Save $0.00
Original price $1,515.00
Original price $1,515.00 - Original price $1,515.00
Original price $1,515.00
Current price $1,439.25
$1,439.25 - $1,439.25
Current price $1,439.25

William Optics ZenithStar 81 Doublet WIFD APO f/6.9

William Optics

William Optics ZenithStar 81 Doublet APO f/6.9 A premium refractor telescope that offers unparalleled optical precision with its innovative Interna...

View full details
Original price $1,515.00
Original price $1,515.00 - Original price $1,515.00
Original price $1,515.00
Current price $1,439.25
$1,439.25 - $1,439.25
Current price $1,439.25
Save $75.75 Save $0.00
Original price $1,293.00 - Original price $1,363.00
Original price $1,293.00 - Original price $1,363.00
Original price $1,293.00
$1,228.35 - $1,294.85
$1,228.35 - $1,294.85
Current price $1,228.35

William Optics MiniCat 51 f/3.5 WIFD (T-C-MINI-RD)

William Optics

William Optics MiniCat 51 f/3.5 WIFD Designed for photography enthusiasts who love wide-angle views. Its standout feature is an ultra-bright f/3.5 ...

View full details
Original price $1,293.00 - Original price $1,363.00
Original price $1,293.00 - Original price $1,363.00
Original price $1,293.00
$1,228.35 - $1,294.85
$1,228.35 - $1,294.85
Current price $1,228.35
Save up to $68.15 Save $0.00
Original price $5,793.00
Original price $5,793.00 - Original price $5,793.00
Original price $5,793.00
Current price $5,503.35
$5,503.35 - $5,503.35
Current price $5,503.35

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...

View full details
Original price $5,793.00
Original price $5,793.00 - Original price $5,793.00
Original price $5,793.00
Current price $5,503.35
$5,503.35 - $5,503.35
Current price $5,503.35
Save $289.65 Save $0.00
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75

William Optics Slide-Base 50mm Guiding Rings (GR50II)

William Optics

William Optics Slide-Base 50mm Guiding Rings Install your 50mm William Optics Guide Scope or Finder scope on your slide handle with the William Opt...

View full details
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75
Save $5.25 Save $0.00
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75

William Optics Red Dot finder Kit - USED (M-RDF-P-VB-U)

William Optics

William Optics Red dot finder Kit - USED This very practical Red Dot Finder (R.D.F.) comes with a handy, quick -release bracket included in the pri...

View full details
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75
Save $5.25 Save $0.00
Original price $1,698.00
Original price $1,698.00 - Original price $1,698.00
Original price $1,698.00
Current price $1,613.10
$1,613.10 - $1,613.10
Current price $1,613.10

William Optics Pier Mount 90 (YG-PM-90R)

William Optics

William Optics Pier Mount 90 The Pier Mount 90 is a heavy-duty aluminum pier designed to provide a very stable, vibration-resistant base for astron...

View full details
Original price $1,698.00
Original price $1,698.00 - Original price $1,698.00
Original price $1,698.00
Current price $1,613.10
$1,613.10 - $1,613.10
Current price $1,613.10
Save $84.90 Save $0.00
Original price $15.00
Original price $15.00 - Original price $15.00
Original price $15.00
Current price $14.25
$14.25 - $14.25
Current price $14.25

William Optics M48 Filter Adapters for Cat Eyes Binoculars (AD-2X42-M48)

William Optics

William Optics M48 Filter Adapters for Cat Eyes Binoculars The M48 Filter Adapter allows standard 2-inch astronomical filters (M48 × 0.75 thread) t...

View full details
Original price $15.00
Original price $15.00 - Original price $15.00
Original price $15.00
Current price $14.25
$14.25 - $14.25
Current price $14.25
Save $0.75 Save $0.00
Original price $962.00
Original price $962.00 - Original price $962.00
Original price $962.00
Current price $913.90
$913.90 - $913.90
Current price $913.90

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:...

View full details
Original price $962.00
Original price $962.00 - Original price $962.00
Original price $962.00
Current price $913.90
$913.90 - $913.90
Current price $913.90
Save $48.10 Save $0.00
Original price $1,225.00
Original price $1,225.00 - Original price $1,225.00
Original price $1,225.00
Current price $1,163.75
$1,163.75 - $1,163.75
Current price $1,163.75

William Optics Redcat 51 WIFD F/4.9 Petzval Refractor (L-RC51RDIII-WIFD)

William Optics

William Optics Redcat 51 WIFD F/4.9 Petzval Refractor As seen on the RedCat 61 series, the patented William Optics Internal Focus Design (WIFD) mak...

View full details
Original price $1,225.00
Original price $1,225.00 - Original price $1,225.00
Original price $1,225.00
Current price $1,163.75
$1,163.75 - $1,163.75
Current price $1,163.75
Save $61.25 Save $0.00
Original price $1,501.00
Original price $1,501.00 - Original price $1,501.00
Original price $1,501.00
Current price $1,425.95
$1,425.95 - $1,425.95
Current price $1,425.95

William Optics Spacecat 51 WIFD (L-RC51SGIII)

William Optics

William Optics Spacecat 51 WIFD  Experience the Elegance of the Universe with the William Optics Spacecat 51 WIFD Telescope Unlock the secrets of t...

View full details
Original price $1,501.00
Original price $1,501.00 - Original price $1,501.00
Original price $1,501.00
Current price $1,425.95
$1,425.95 - $1,425.95
Current price $1,425.95
Save $75.05 Save $0.00
Original price $135.00
Original price $135.00 - Original price $135.00
Original price $135.00
Current price $128.25
$128.25 - $128.25
Current price $128.25

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 ...

View full details
Original price $135.00
Original price $135.00 - Original price $135.00
Original price $135.00
Current price $128.25
$128.25 - $128.25
Current price $128.25
Save $6.75 Save $0.00
Original price $3,033.00
Original price $3,033.00 - Original price $3,033.00
Original price $3,033.00
Current price $2,881.35
$2,881.35 - $2,881.35
Current price $2,881.35

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 ...

View full details
Original price $3,033.00
Original price $3,033.00 - Original price $3,033.00
Original price $3,033.00
Current price $2,881.35
$2,881.35 - $2,881.35
Current price $2,881.35
Save $151.65 Save $0.00
Original price $145.00
Original price $145.00 - Original price $145.00
Original price $145.00
Current price $137.75
$137.75 - $137.75
Current price $137.75

William Optics Red Dot finder Kit with Vixen Style Mounting Base (M-RDF-P-VB)

William Optics

William Optics Red dot finder Kit with Vixen Style Mounting Base This very practical Red Dot Finder (R.D.F.) comes with a handy, quick -release bra...

View full details
Original price $145.00
Original price $145.00 - Original price $145.00
Original price $145.00
Current price $137.75
$137.75 - $137.75
Current price $137.75
Save $7.25 Save $0.00
Original price $109.00
Original price $109.00 - Original price $109.00
Original price $109.00
Current price $103.55
$103.55 - $103.55
Current price $103.55

William Optics Saddle Plate for Vixen-style Dovetail Plate - 90mm (M-SP90RC-RD)

William Optics

William Optics Saddle Plate for Vixen-style Dovetail Plate Weight:230g This William Optics saddle plate is designed to accept Vixen-style dovetail...

View full details
Original price $109.00
Original price $109.00 - Original price $109.00
Original price $109.00
Current price $103.55
$103.55 - $103.55
Current price $103.55
Save $5.45 Save $0.00
Original price $3,497.00
Original price $3,497.00 - Original price $3,497.00
Original price $3,497.00
Current price $3,322.15
$3,322.15 - $3,322.15
Current price $3,322.15

William Optics Mighty-Cat 71 (T-MC-71RD)

William Optics

William Optics Mighty-Cat 71 The William Optics Mighty Cat 71 is a groundbreaking 71mm apochromatic astrograph engineered to redefine ultra-fast de...

View full details
Original price $3,497.00
Original price $3,497.00 - Original price $3,497.00
Original price $3,497.00
Current price $3,322.15
$3,322.15 - $3,322.15
Current price $3,322.15
Save $174.85 Save $0.00
Original price $76.00
Original price $76.00 - Original price $76.00
Original price $76.00
Current price $72.20
$72.20 - $72.20
Current price $72.20

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...

View full details
Original price $76.00
Original price $76.00 - Original price $76.00
Original price $76.00
Current price $72.20
$72.20 - $72.20
Current price $72.20
Save $3.80 Save $0.00
Original price $30.00
Original price $30.00 - Original price $30.00
Original price $30.00
Current price $28.50
$28.50 - $28.50
Current price $28.50

William Optics Saddle Vixen Style Mounting Base (BAFM-ST001)

William Optics

William Optics Saddle Vixen Style Mounting Base   In the Box William Optics Saddle Vixen Style Mounting Base Two Mounting Screws Warranty &...

View full details
Original price $30.00
Original price $30.00 - Original price $30.00
Original price $30.00
Current price $28.50
$28.50 - $28.50
Current price $28.50
Save $1.50 Save $0.00
Original price $2,013.00
Original price $2,013.00 - Original price $2,013.00
Original price $2,013.00
Current price $1,912.35
$1,912.35 - $1,912.35
Current price $1,912.35

William Optics RedCat 71 f/4.9 APO with WIFD (T-C-71RDII)

William Optics

William Optics RedCat 71 f/4.9 APO with WIFD The RedCat series is one of the most popular lines of compact refractors on the market and it is easy ...

View full details
Original price $2,013.00
Original price $2,013.00 - Original price $2,013.00
Original price $2,013.00
Current price $1,912.35
$1,912.35 - $1,912.35
Current price $1,912.35
Save $100.65 Save $0.00
Original price $7,449.00
Original price $7,449.00 - Original price $7,449.00
Original price $7,449.00
Current price $7,076.55
$7,076.55 - $7,076.55
Current price $7,076.55

William Optics Ultra-Cat 131 (T-C-131BR)

William Optics

William Optics Ultra-Cat 131 The William Optics Ultra-Cat 131 is the flagship of the Ultra-Cat series, representing the pinnacle of wide-field astr...

View full details
Original price $7,449.00
Original price $7,449.00 - Original price $7,449.00
Original price $7,449.00
Current price $7,076.55
$7,076.55 - $7,076.55
Current price $7,076.55
Save $372.45 Save $0.00
Original price $12,417.00
Original price $12,417.00 - Original price $12,417.00
Original price $12,417.00
Current price $11,796.15
$11,796.15 - $11,796.15
Current price $11,796.15

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...

View full details
Original price $12,417.00
Original price $12,417.00 - Original price $12,417.00
Original price $12,417.00
Current price $11,796.15
$11,796.15 - $11,796.15
Current price $11,796.15
Save $620.85 Save $0.00
Original price $1,515.00
Original price $1,515.00 - Original price $1,515.00
Original price $1,515.00
Current price $1,439.25
$1,439.25 - $1,439.25
Current price $1,439.25

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...

View full details
Original price $1,515.00
Original price $1,515.00 - Original price $1,515.00
Original price $1,515.00
Current price $1,439.25
$1,439.25 - $1,439.25
Current price $1,439.25
Save $75.75 Save $0.00
Original price $54.00
Original price $54.00 - Original price $54.00
Original price $54.00
Current price $51.30
$51.30 - $51.30
Current price $51.30

William Optics M48 Push-in Nosepiece for WO 2" Diagonals (WD-DIG2A)

William Optics

William Optics M48 Push-in Nosepiece for WO 2" Diagonals  Special Reduced Price ! Take advantage of this high quality adapter nose piece for almost...

View full details
Original price $54.00
Original price $54.00 - Original price $54.00
Original price $54.00
Current price $51.30
$51.30 - $51.30
Current price $51.30
Save $2.70 Save $0.00
Original price $80.00
Original price $80.00 - Original price $80.00
Original price $80.00
Current price $76.00
$76.00 - $76.00
Current price $76.00

William Optics Longer Adjusting Adapter for FLAT68III, FLAT7A (AD-M80-45-M48)

William Optics

William Optics Longer Adjusting Adapter for FLAT68III, FLAT7A This adjustable adapter offers a convenient, efficient way to upgrade your WO diagona...

View full details
Original price $80.00
Original price $80.00 - Original price $80.00
Original price $80.00
Current price $76.00
$76.00 - $76.00
Current price $76.00
Save $4.00 Save $0.00
Original price $1,515.00
Original price $1,515.00 - Original price $1,515.00
Original price $1,515.00
Current price $1,439.25
$1,439.25 - $1,439.25
Current price $1,439.25

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...

View full details
Original price $1,515.00
Original price $1,515.00 - Original price $1,515.00
Original price $1,515.00
Current price $1,439.25
$1,439.25 - $1,439.25
Current price $1,439.25
Save $75.75 Save $0.00
Original price $27,597.00
Original price $27,597.00 - Original price $27,597.00
Original price $27,597.00
Current price $26,217.15
$26,217.15 - $26,217.15
Current price $26,217.15

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 ...

View full details
Original price $27,597.00
Original price $27,597.00 - Original price $27,597.00
Original price $27,597.00
Current price $26,217.15
$26,217.15 - $26,217.15
Current price $26,217.15
Save $1,379.85 Save $0.00
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75

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 &...

View full details
Original price $105.00
Original price $105.00 - Original price $105.00
Original price $105.00
Current price $99.75
$99.75 - $99.75
Current price $99.75
Save $5.25 Save $0.00
Free Shipping

in Canada over 500$+* bf txs

Buy Now, Pay Later

Paybright and Sezzle at Check Out

Target the Right Equipment

Contact us!

Price Match

Find a Better Price? We Will Match it!

Compare products

{"one"=>"Select 2 or 3 items to compare", "other"=>"{{ count }} of 3 items selected"}

Select first item to compare

Select second item to compare

Select third item to compare

Compare