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We’ll be exceptionally open on Sunday, December 21st and Monday, December 22nd, 2025. We look forward to seeing you!
We’ll be exceptionally open on Sunday, December 21st and Monday, December 22nd, 2025. We look forward to seeing you!

Telescopes & Astronomy Equipment on Sale

Telescopes and astronomy equipment on sale give you the opportunity to acquire high-performance instruments at reduced prices, perfect for exploring the night sky. Whether you are an experienced enthusiast or an amateur looking to expand your setup, these deals make astronomy more accessible.

You’ll find telescopes, eyepieces, filters, and accessories suitable for various types of observation, from planets to deep-sky objects. Sales offer the chance to try new models or upgrade your existing setup without compromising quality, all at a good value. We also have overstock sales of astronomy equipment at reduced prices.

This page is regularly updated to provide the best prices on astronomy equipment. Whether your goal is to introduce others to astronomy or enhance your personal observations, these promotions make it easier to access reliable, high-quality instruments. Explore our offers and discover tools that will enrich your observing sessions while staying within your budget. You can also discover our secondhand and used astronomy equipment or open boxes of astronomy equipment

Original price $122.00
Original price $122.00 - Original price $122.00
Original price $122.00
Current price $109.80
$109.80 - $109.80
Current price $109.80

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...

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Original price $122.00
Original price $122.00 - Original price $122.00
Original price $122.00
Current price $109.80
$109.80 - $109.80
Current price $109.80
Save $12.20 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 $630.00
Original price $630.00 - Original price $630.00
Original price $630.00
Current price $567.00
$567.00 - $567.00
Current price $567.00

William Optics Guide Star 61

William Optics

William Optics Guide Star 61 Designed exclusively for high-quality imaging and precision guiding. Featuring the acclaimed FPL53 ED doublet lens, id...

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Original price $630.00
Original price $630.00 - Original price $630.00
Original price $630.00
Current price $567.00
$567.00 - $567.00
Current price $567.00
Save $63.00 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 $164.00
Original price $164.00 - Original price $164.00
Original price $164.00
Current price $147.60
$147.60 - $147.60
Current price $147.60

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 ...

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Original price $164.00
Original price $164.00 - Original price $164.00
Original price $164.00
Current price $147.60
$147.60 - $147.60
Current price $147.60
Save $16.40 Save $0.00
Original price $49.00
Original price $49.00 - Original price $49.00
Original price $49.00
Current price $44.10
$44.10 - $44.10
Current price $44.10

William Optics 48mm T mount for Canon EOS (TM-CN-EOS-M48)

William Optics

William Optics 48mm T mount for Canon EOS   In the Box William Optics 48mm T mount for Canon EOS Warranty & Manuals William Optics 2-Yea...

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Original price $49.00
Original price $49.00 - Original price $49.00
Original price $49.00
Current price $44.10
$44.10 - $44.10
Current price $44.10
Save $4.90 Save $0.00
Original price $49.00
Original price $49.00 - Original price $49.00
Original price $49.00
Current price $44.10
$44.10 - $44.10
Current price $44.10

William Optics 48mm T mount for Nikon F (TM-NK-F-M48)

William Optics

William Optics 48mm T mount for Nikon F 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 $49.00
Original price $49.00 - Original price $49.00
Original price $49.00
Current price $44.10
$44.10 - $44.10
Current price $44.10
Save $4.90 Save $0.00
Original price $95.00
Original price $95.00 - Original price $95.00
Original price $95.00
Current price $85.50
$85.50 - $85.50
Current price $85.50

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...

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Original price $95.00
Original price $95.00 - Original price $95.00
Original price $95.00
Current price $85.50
$85.50 - $85.50
Current price $85.50
Save $9.50 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 $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 $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 Canon Mirrorless R Camera (TM-CN-EOSR-M48)

William Optics

William Optics 48mm T mount for Canon Mirrorless R Camera   In the Box William Optics 48mm T mount for Canon Mirrorless R Camera Warran...

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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 $49.00
Original price $49.00 - Original price $49.00
Original price $49.00
Current price $44.10
$44.10 - $44.10
Current price $44.10

William Optics 48mm T mount for Pentax K - Black (TM-PT-K-M48)

William Optics

William Optics 48mm T mount for Pentax K - Black   In the Box William Optics 48mm T mount for Pentax K - Black Warranty & Manuals William O...

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Original price $49.00
Original price $49.00 - Original price $49.00
Original price $49.00
Current price $44.10
$44.10 - $44.10
Current price $44.10
Save $4.90 Save $0.00
Original price $32.00
Original price $32.00 - Original price $32.00
Original price $32.00
Current price $28.80
$28.80 - $28.80
Current price $28.80

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 &...

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Original price $32.00
Original price $32.00 - Original price $32.00
Original price $32.00
Current price $28.80
$28.80 - $28.80
Current price $28.80
Save $3.20 Save $0.00
Original price $246.00
Original price $246.00 - Original price $246.00
Original price $246.00
Current price $221.40
$221.40 - $221.40
Current price $221.40

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...

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Original price $246.00
Original price $246.00 - Original price $246.00
Original price $246.00
Current price $221.40
$221.40 - $221.40
Current price $221.40
Save $24.60 Save $0.00
Original price $157.00
Original price $157.00 - Original price $157.00
Original price $157.00
Current price $141.30
$141.30 - $141.30
Current price $141.30

William Optics Camera Angle Rotator for 2.5" M63 Focuser (M-CAA63)

William Optics

William Optics Camera Angle Rotator for 2.5" M63 Focuser All New William Optics Camera Angle Rotator for 2.5" M63 Focuser Fits : Z73, Z103, Z126...

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Original price $157.00
Original price $157.00 - Original price $157.00
Original price $157.00
Current price $141.30
$141.30 - $141.30
Current price $141.30
Save $15.70 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 $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 $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 $71.00
Original price $71.00 - Original price $71.00
Original price $71.00
Current price $63.90
$63.90 - $63.90
Current price $63.90

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...

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Original price $71.00
Original price $71.00 - Original price $71.00
Original price $71.00
Current price $63.90
$63.90 - $63.90
Current price $63.90
Save $7.10 Save $0.00
Original price $346.00
Original price $346.00 - Original price $346.00
Original price $346.00
Current price $311.40
$311.40 - $311.40
Current price $311.40

William Optics High Latitude Vixen Base Mount with Extension Bar for iOptron Skyguider Pro (YG-IO-SG01H-RD-P)

William Optics

William Optics High Latitude Vixen Base Mount with Extension Bar for iOptron Skyguider Pro 100% precision CNC made .It’s big upgrade for the sta...

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Original price $346.00
Original price $346.00 - Original price $346.00
Original price $346.00
Current price $311.40
$311.40 - $311.40
Current price $311.40
Save $34.60 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 $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
Save $15.80 Save $0.00
Original price $150.00
Original price $150.00 - Original price $150.00
Original price $150.00
Current price $135.00
$135.00 - $135.00
Current price $135.00

William Optics Camera Angle Rotator for 2” M54 Focuser (M-CAA54)

William Optics

Camera Angle Rotator for 2” M54 Focuser All New Camera Angle Rotator for 2” M54 Focuser Fits : Z61 and all other brand Focuser with M54 threads. In...

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Original price $150.00
Original price $150.00 - Original price $150.00
Original price $150.00
Current price $135.00
$135.00 - $135.00
Current price $135.00
Save $15.00 Save $0.00
Original price $48.00
Original price $48.00 - Original price $48.00
Original price $48.00
Current price $43.20
$43.20 - $43.20
Current price $43.20

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...

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Original price $48.00
Original price $48.00 - Original price $48.00
Original price $48.00
Current price $43.20
$43.20 - $43.20
Current price $43.20
Save $4.80 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 $76.00
Original price $76.00 - Original price $76.00
Original price $76.00
Current price $68.40
$68.40 - $68.40
Current price $68.40

William Optics 2" to 1.25" RotoLock Eyepiece Adapter

William Optics

William Optics 2" to 1.25" RotoLock Eyepiece Adapter  The new RotoLock series of adapters from William Optics may well set the "gold' standard for ...

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Original price $76.00
Original price $76.00 - Original price $76.00
Original price $76.00
Current price $68.40
$68.40 - $68.40
Current price $68.40
Save $7.60 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 $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 $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
Save $13.10 Save $0.00
Original price $52.00 - Original price $71.00
Original price $52.00 - Original price $71.00
Original price $52.00
$46.80 - $63.90
$46.80 - $63.90
Current price $46.80

William Optics Dual side Dovetail Plate

William Optics

William Optics Dual side Dovetail Plate Vixen-style & Arca Swiss Type In the Box Selected length and color of Dual side Dovetail Plate Warranty...

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Original price $52.00 - Original price $71.00
Original price $52.00 - Original price $71.00
Original price $52.00
$46.80 - $63.90
$46.80 - $63.90
Current price $46.80
Save up to $7.10 Save $0.00
Original price $199.00
Original price $199.00 - Original price $199.00
Original price $199.00
Current price $179.10
$179.10 - $179.10
Current price $179.10

William Optics 1.25" 90° Erect Prism for Cat 61 WIFD (D-EP90-125-RC61)

William Optics

William Optics 1.25" 90° Erect Prism for Cat 61 WIFD Transform your observing experience with this 90° erect-image prism diagonal, ideal for both t...

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Original price $199.00
Original price $199.00 - Original price $199.00
Original price $199.00
Current price $179.10
$179.10 - $179.10
Current price $179.10
Save $19.90 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 $0.00 - Original price $167.00
Original price $0.00
$111.00 - $167.00
$111.00 - $167.00
Current price $111.00

Optolong Night Sky H-Alpha filter (IR-Pass 650nm)

Optolong

Optolong Night Sky H-Alpha filter Night Sky H-Alpha filter (IR Pass 650nm) with 50% transition from blocking to passing at about 640nm and 95% or a...

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Original price $0.00 - Original price $167.00
Original price $0.00
$111.00 - $167.00
$111.00 - $167.00
Current price $111.00
Original price $1,679.00
Original price $1,679.00 - Original price $1,679.00
Original price $1,679.00
Current price $1,595.00
$1,595.00 - $1,595.00
Current price $1,595.00

Askar 103APO 103mm F/6.8 Triplet Refractor Telescope (103APO)

Askar

Askar 103APO 103mm F/6.8 Triplet Refractor Telescope After a long preparation, we launch the new Askar 103APO, dedicated to enabling more amateurs ...

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Original price $1,679.00
Original price $1,679.00 - Original price $1,679.00
Original price $1,679.00
Current price $1,595.00
$1,595.00 - $1,595.00
Current price $1,595.00
Save $84.00 Save $0.00
Original price $1,253.00
Original price $1,253.00 - Original price $1,253.00
Original price $1,253.00
Current price $1,125.00
$1,125.00 - $1,125.00
Current price $1,125.00

Askar FRA400C 72mm f/5.6 Quintuplet ED APO (FRA400C)

Askar

Askar FRA400C 72mm f/5.6 Quintuplet ED APO The refreshed, budget-friendly iteration of FRA400, is suitable for astrophotography, daily photography,...

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Original price $1,253.00
Original price $1,253.00 - Original price $1,253.00
Original price $1,253.00
Current price $1,125.00
$1,125.00 - $1,125.00
Current price $1,125.00
Save $128.00 Save $0.00
Original price $2,233.00
Original price $2,233.00 - Original price $2,233.00
Original price $2,233.00
Current price $2,121.00
$2,121.00 - $2,121.00
Current price $2,121.00

Askar SQA70 f/4.8 Quintuplet APO (SQA70)

Askar

Askar SQA70  f/4.8 Quintuplet APO Super Quintuplet Astrograph.  High-quality quintuplet air-spaced ED glass Petzval Astrograph. EXCELLENT STAR PER...

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Original price $2,233.00
Original price $2,233.00 - Original price $2,233.00
Original price $2,233.00
Current price $2,121.00
$2,121.00 - $2,121.00
Current price $2,121.00
Save $112.00 Save $0.00
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