Save up to $300 on ZWO AM5 and AM3 mount packages while supplies last!Save up to $300 on ZWO AM5 and AM3 mount packages while supplies last!

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    Lumicon Color / Planetary Filter #15 Yellow-Orange - 1.25" # LF1025
    Lumicon Color / Planetary Filter #15 Yellow-Orange - 1.25" # LF1025
    Sale Price: $43.20 Our Price: $48.00
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    Lumicon Color / Planetary Filter #38A Dark Blue - 1.25" # LF1050
    Lumicon Color / Planetary Filter #38A Dark Blue - 1.25" # LF1050
    Sale Price: $36.90 Our Price: $41.00
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    Lumicon Color / Planetary Filter #11 Yellow-Green - 2" # LF2015
    Lumicon Color / Planetary Filter #11 Yellow-Green - 2" # LF2015
    Sale Price: $45.00 Our Price: $50.00
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    Lumicon Color / Planetary Filter #38A Dark Blue - 2" # LF2050
    Lumicon Color / Planetary Filter #38A Dark Blue - 2" # LF2050
    Sale Price: $49.50 Our Price: $55.00
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  5. On Sale
    Sky-Watcher 10" Traditional Dobsonian Telescope # S11620
    Sky-Watcher 10" Traditional Dobsonian Telescope # S11620
    Sale Price: $699.00 Our Price: $910.00
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  6. On Sale
    Sky-Watcher AZ-EQ5 Mount with Pier Tripod # S30200
    Sky-Watcher AZ-EQ5 Mount with Pier Tripod # S30200
    Our Price: $1,599.00
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  7. Special
    Askar 130PHQ 130mm f/7.7 Quadruplet Flat-Field Astrograph # 130PHQ
    Askar 130PHQ 130mm f/7.7 Quadruplet Flat-Field Astrograph # 130PHQ
    Our Price: $3,499.00
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    Lumicon Color / Planetary Filter #29 Dark Red - 2" # LF2045
    Lumicon Color / Planetary Filter #29 Dark Red - 2" # LF2045
    Sale Price: $60.30 Our Price: $67.00
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  9. On Sale
    QHY 3rd Generation Small Electronic Filter Wheel - Ultra Thin (1.25" Mounted or 31mm Unmounted Round , 7 Position) # QHYCFW3S-US7
    QHY 3rd Generation Small Electronic Filter Wheel - Ultra Thin (1.25" Mounted or 31mm Unmount...
    Sale Price: $233.10 Our Price: $259.00
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    Sky-Watcher EvoStar 100ED APO Refractor # S11120
    Sky-Watcher EvoStar 100ED APO Refractor # S11120
    Sale Price: $999.00 Our Price: $1,255.00
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  11. Special
    Askar V 60mm / 80mm Triplet Modular Apo Refractor Telescope
    Askar V 60mm / 80mm Triplet Modular Apo Refractor Telescope
    Our Price: $1,695.00
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  12. On Sale
    QHY 533M Cooled Monochrome Astronomy Camera # QHY533M
    QHY 533M Cooled Monochrome Astronomy Camera # QHY533M
    Sale Price: $879.20 Our Price: $1,099.00
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    Celestron StarSense Explorer 10" Dobsonian Telescope # 22471
    Celestron StarSense Explorer 10" Dobsonian Telescope # 22471
    Our Price: $999.00
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    QHY 5-III 174M Monochrome Astronomy Camera with USB 3.0 # QHY5-III-174-M
    QHY 5-III 174M Monochrome Astronomy Camera with USB 3.0 # QHY5-III-174-M
    Sale Price: $539.10 Our Price: $599.00
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    Celestron 1.25" Dielectric Star Diagonal with Twist-Lock # 93571
    Celestron 1.25" Dielectric Star Diagonal with Twist-Lock # 93571
    Sale Price: $144.95 Our Price: $154.95
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    Celestron Nature DX 10x42 Binoculars # 71333
    Celestron Nature DX 10x42 Binoculars # 71333
    Sale Price: $159.95 Our Price: $179.95
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    Lumicon Color / Planetary Filter #29 Dark Red - 1.25" # LF1045
    Lumicon Color / Planetary Filter #29 Dark Red - 1.25" # LF1045
    Sale Price: $43.20 Our Price: $48.00
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  18. On Sale
    Sky-Watcher 8" Traditional Dobsonian Telescope # S11610
    Sky-Watcher 8" Traditional Dobsonian Telescope # S11610
    Sale Price: $499.00 Our Price: $655.00
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  19. On Sale
    Sky-Watcher Esprit 120mm ED Triplet Apo Refractor OTA # S11420
    Sky-Watcher Esprit 120mm ED Triplet Apo Refractor OTA # S11420
    Sale Price: $3,299.00 Our Price: $4,165.00
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  20. On Sale
    Sky-Watcher CQ350 Pro Mount Head with Counterweights (No Tripod) # S30820
    Sky-Watcher CQ350 Pro Mount Head with Counterweights (No Tripod) # S30820
    Our Price: $2,799.00
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  21. On Sale
    Sky-Watcher CQ350 Pro Mount with Heavy-Duty Field Tripod # S30810
    Sky-Watcher CQ350 Pro Mount with Heavy-Duty Field Tripod # S30810
    Our Price: $3,499.00
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  22. On Sale
    The World of the Microscope # 44402
    The World of the Microscope # 44402
    Sale Price: $11.99 Our Price: $13.95
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  23. On Sale
    Sky-Watcher EvoStar 120ED APO Refractor # S11130
    Sky-Watcher EvoStar 120ED APO Refractor # S11130
    Sale Price: $1,999.00 Our Price: $2,490.00
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    Lumicon Lunar & Planetary Filter Set (4 Filters) - 1.25" # LF5045
    Lumicon Lunar & Planetary Filter Set (4 Filters) - 1.25" # LF5045
    Sale Price: $154.70 Our Price: $182.00
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Product Banner Type
  1. clearance 46 items
  2. closeout 35 items
  3. discontinued 5 items
  4. new 51 items
  5. sale 30 items
  6. special 9 items
Adapter Specifications
  1. Miscellaneous Thread - Male 1 item
Accessory Size
  1. 1.25 inch 14 items
  2. 2 inch 4 items
  3. 36mm Round Unmounted 3 items
Color
Eyepiece Field of View
  1. 51 - 60 degrees 7 items
  2. 71 - 80 degrees 4 items
Telescope Mount Type
  1. No Mount (OTA Only) 26 items
  2. Alt-Azimuth (AZ) 1 item
  3. Equatorial (EQ) 4 items
  4. Fork (Dual Arm) 7 items
  5. Fork (Single Arm) 3 items
  6. Dobsonian 10 items
Binocular Prism Type
  1. Porro Prism 1 item
  2. Roof Prism 7 items
Manufacturer
  1. Agena Astro 1 item
  2. American Paper Optics 2 items
  3. Antlia Filters 2 items
  4. Askar 6 items
  5. Baader Planetarium 7 items
  6. Celestron 46 items
  7. Coronado 1 item
  8. DayStar Filters 1 item
  9. Founder Optics 1 item
  10. GSO 3 items
  11. iOptron 1 item
  12. Levenhuk 1 item
  13. Long Perng 10 items
  14. Lumicon 13 items
  15. Lunt Solar Systems 1 item
  16. Meade 15 items
  17. Pegasus Astro 1 item
  18. PrimaLuceLab 4 items
  19. QHYCCD 52 items
  20. Sharpstar 1 item
  21. Sky Watcher 23 items
  22. Spectrum Telescope 1 item
  23. Tele Vue 1 item
  24. Thousand Oaks Optical 1 item
  25. William Optics 11 items
  26. ZWO Astronomy Cameras 13 items
Binocular Series
  1. Celestron Nature DX 2 items
  2. Celestron Nature DX ED 1 item
  3. Celestron Outland X 1 item
  4. Celestron SkyMaster 1 item
  5. Celestron TrailSeeker 2 items
  6. Celestron UpClose 1 item
Telescope Series
  1. Askar PHQ 1 item
  2. Askar V 1 item
  3. Celestron Advanced VX 1 item
  4. Celestron CPC 4 items
  5. Celestron NexStar Evolution 2 items
  6. Celestron NexStar SE 1 item
  7. Celestron PowerSeeker 1 item
  8. Celestron RASA 1 item
  9. Celestron Spotting Scopes 2 items
  10. Celestron StarSense Explorer 6 items
  11. Founder Optics Draco Refractor 1 item
  12. GSO Ritchey-Chrétien 1 item
  13. Meade LX85 6 items
  14. Meade LX90 1 item
  15. Meade LX200-ACF 2 items
  16. Sharpstar Refractors 1 item
  17. Sky Watcher Flextube Dobsonian 2 items
  18. Sky Watcher Esprit APO 3 items
  19. Sky Watcher EvoStar 3 items
  20. Sky Watcher Flextube SynScan Dobsonian 1 item
  21. Sky Watcher ProEd 1 item
  22. Sky Watcher Traditional Dobsonian 2 items
  23. William Optics GT 2 items
  24. William Optics RedCat 4 items
  25. William Optics Zenith Star 2 items
  26. ZWO Refractors 4 items
Telescope Aperture
  1. Up to 2" [51mm] 2 items
  2. 2.1 - 3" [76mm] 4 items
  3. 2.1 - 3" [76mm] 2 items
  4. 3.1 - 4" [102mm] 9 items
  5. 4.1 - 5" [127mm] 8 items
  6. 5.1 - 6" [153mm] 8 items
  7. 6.1 - 8" [203mm] 12 items
  8. 8.1 - 10" [254mm] 4 items
  9. 10.1 - 12" [305mm] 4 items
Telescope Optical Design
  1. Advanced Coma Free (ACF) 7 items
  2. Aplanatic Schmidt (EdgeHD) 3 items
  3. Astrograph 6 items
  4. Schmidt-Cassegrain 5 items
  5. Newtonian Reflector 12 items
  6. Ritchey-Chretien 1 item
  7. Doublet (Achromat) 1 item
  8. Doublet (Apochromat) 5 items
  9. Triplet (Apochromat) 6 items
  10. Petzval 5 items
Telescope Focal Length
  1. Up to 300mm 3 items
  2. 301 - 400mm 5 items
  3. 401 - 500mm 5 items
  4. 501 - 600mm 3 items
  5. 601 - 700mm 2 items
  6. 701 - 800mm 3 items
  7. 801 - 900mm 4 items
  8. 901 - 1000mm 2 items
  9. 1001 - 1250mm 7 items
  10. 1251 - 1500mm 3 items
  11. 1501 - 1750mm 2 items
  12. 1751 - 2000mm 1 item
  13. 2001 - 2500mm 9 items
  14. 2501 - 3000m 2 items
Telescope Focal Ratio
  1. Up to f/4 3 items
  2. f/4.1 - f/5 12 items
  3. f/5.1 - f/6 7 items
  4. f/6.1 - f/7 6 items
  5. f/7.1 - f/8 8 items
  6. f/8.1 - f/9 1 item
  7. f/9.1 - f/10 15 items
Eyepiece Focal Length
  1. 5mm and Under 4 items
  2. 5.1mm - 10mm 2 items
  3. 10.1mm - 15mm 4 items
  4. 15.1mm - 20mm 1 item
Experience Level
  1. Beginner 7 items
  2. Intermediate 25 items
  3. Advanced 11 items
Stock
  1. In Stock 186 items
  2. Out of Stock 33 items
Price
  1. $0.00 - $1,000.00 148 items
  2. $1,000.00 - $2,000.00 27 items
  3. $2,000.00 - $3,000.00 16 items
  4. $3,000.00 - $4,000.00 13 items
  5. $4,000.00 - $5,000.00 11 items
  6. $5,000.00 - $6,000.00 1 item
  7. $6,000.00 - $7,000.00 1 item
  8. $7,000.00 - $8,000.00 1 item
  9. $8,000.00 - $9,000.00 1 item
$ - $