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Telescope Brands

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  • ZWO Astronomy Cameras ZWO 850nm IR Pass Filter - 1.25" - IR850NM1
    $22.00
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  • Celestron Celestron StarSense Auto Telescope Alignment Accessory - 94005
    $359.95
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    free shipping
  • Celestron Celestron NexStar 8SE Computerized Telescope - 11069
    $1,199.00
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    free shipping
  • Baader Mark IV Hyperion Zoom Eyepiece - Shows Adjustable Eyecup
    Baader Planetarium Baader Hyperion Zoom Mark IV 8-24 mm Click Stop Eyepiece - HYP-ZOOM
    $289.00
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    free shipping
  • Atik Cameras Atik 460EX Monochrome CCD Camera W/ Sony ICX694 Sensor - ATK0100
    $2,524.00
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    free shipping
  • High Point High Point 2" Dielectric Mirror Diagonal - HPS-D2
    $109.95
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  • Celestron AVX Mount with Free Polarscope and Case from HPS
    Celestron Celestron Advanced VX Equatorial Mount - 91519
    $899.00
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    free shipping
  • Coronado PST - Personal Solar Telescope
    Coronado Coronado PST Personal Solar Telescope <1.0 Angstrom H-Alpha Refractor - PST
    $699.00
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    free shipping
  • Explore Scientific Explore Scientific 9 mm 120° Eyepiece - 2" - EPWP12009-01
    $899.99 $719.99
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    free shipping
  • Baader 2
    Baader Planetarium Baader UHC-S Nebula Filter - L Booster - 2" - FUHC-2
    $147.00
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  • Celestron Celestron PowerSeeker 127EQ Reflector Telescope - 21049
    $169.95 $148.00
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  • Celestron Celestron Omni XLT 102 Refractor Equatorial Telescope - 21088
    $509.95 $436.99
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  • Celestron NexStar 130 SLT Computerized Telescope - 31145
    Celestron Celestron NexStar 130 SLT Computerized Telescope - 31145
    $499.95 $388.95
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    free shipping
  • High Point High Point Wide Angle Eyepiece Kit with 2" Diagonal - WAEPKIT2
    $249.95
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    free shipping
  • ADM CGEM Super Knob Upgrade Kit - Orange Anodized
    ADM ADM 14-Piece CGEM Mount Upgrade Kit - Orange Anodized - CGEM-OR-S
    $230.00
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    free shipping
  • Baader Planetarium Semi APO Filter - 2
    Baader Planetarium Baader Planetarium 2" Semi-APO Filter - FSAPO-2
    $169.00
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  • Celestron Celestron 2.5X Luminos Barlow Lens - 2" - 93436
    $124.95 $114.95
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    free shipping
  • Celestron Celestron NexStar 8SE SCT OTA Orange Tube - 11069-OTA
    $849.95 $679.95
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  • ADM 18
    ADM ADM Accessories D Series Dovetail Plate for Celestron 9.25" SCT OTA - DC925
    $100.00
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  • ADM Accessories D Series Adjustable Guidescope Rings - 100 mm
    ADM ADM 100 mm D Series Adjustable Rings For Guildscopes and Finderscopes - DR100
    $120.00
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  • ADM D Series Universal Dovetail Plate - 7
    ADM ADM Universal Dovetail Plate for Losmandy D Style Mounts - 7" Long - DUP7
    $65.00
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  • ADM Accessories Universal Mini Dovetail Bar - 7
    ADM ADM MDS Series 7" Universal Mini Dovetail Bar - MDS-U7
    $70.00
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  • ADM Accessories Vixen Style Universal Dovetail Bar - 11
    ADM ADM Accessories Vixen Style Universal Dovetail Plate - 11" Long - VDUP11
    $55.00
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  • ADM Vixen Series 14
    ADM ADM Accessories Vixen Style Universal Dovetail Plate - 14" Long VDUP14
    $60.00
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  • ADM 3
    ADM ADM Accessories Vixen Style Universal Dovetail Plate - 3" Long VDUP3
    $35.00
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  • ADM Vixen Series 4
    ADM ADM Accessories Vixen Style Universal Dovetail Plate - 4" Long - VDUP4
    $35.00
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  • ADM Accessories Vixen Series 7
    ADM ADM Accessories Vixen Style Universal Dovetail Plate - 7" Long VDUP7
    $50.00
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  • ADM Accessories V Series 7
    ADM ADM V Series Male to Male Dovetail Adapter - 7" - VMM7
    $55.00
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  • ADM Accessories V Series 125 mm Guidescope Rings
    ADM ADM V Series 125mm Guide Scope Ring Set - VR125
    $110.00
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  • ADM Accessories V Style Guidescope Ring Set - 90 mm
    ADM ADM V Series 90mm Guide Scope Ring Set - VR90
    $110.00
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  • Astro Systems Astro Systems 1.25" Autocollimator Eyepiece - AUTOCOL
    $49.00
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  • Astro Systems Astro Systems Secondary Dew Guard For 1.3" to 2.14" Secondary Mirrors - DG1
    $40.00
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  • Astro Systems Astro Systems Secondary Dew Guard 2.6" to 3.1" Secondary Mirrors - DG2
    $45.00
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  • Astro Systems Astro Systems Secondary Dew Guard 3.5" to 6.0" Secondary Mirrors - DG3
    $50.00
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  • Astro Systems Astro Systems Lite Pipe / Site Tube Combo - 1.25" - LPST
    $49.00
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  • Astro Systems Astro Systems 2" to 1.25" Standard Eyepiece Adapter - SEA
    $29.00
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  • Astro Systems AstroSystems Dew Shield for Telrad Finder
    $18.00
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  • Astro Systems Astro Systems 2" to 1.25" Ultra-Low Eyepiece Adapter - ULA
    $27.00
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  • Atik Cameras ATIK ST4 Compatible Autoguider Cable (2 m) - ATK0027
    $5.00
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  • Atik Cameras Atik 4000 Monochrome Large Format CCD Camera with Kodak KAI-04022 Sensor - ATK0043
    $3,795.00
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High Point Scientific carries the most popular telescope brands among astronomy enthusiasts, including Celestron, Baader Planetarium, Orion, and many more. We also design our own astronomy products under the High Point brand, to give you the best selection of products at the price you’re looking for.


We work directly with manufacturers to give you a wide selection of products from many other brands like Meade, TeleVue, Explore Scientific, Coronado, and iOptron. While we have dedicated many hours researching what telescope brands you - our customers - are looking for, we encourage you to explore up and coming brands on our website such as William Optics, Pentax, SkyWatcher, and Stellarvue.


High Point Scientific offers many of the latest brands to choose from for telescope accessories. Just a few of these brands include AstroZap, ADM Accessories, Losmandy, Takahashi, and JMI. It’s important to make sure you have the correct accessories for your aspirations and budget and our experts are here to make sure you find them.


Astro-imaging is a growing industry, not just for photographers, but for astronomy hobbyists as well. With so many quality, affordable products, it’s easy to see why! Brands like QSI, ZWO, and QHY have designed some of the best astrophotography cameras in the industry, and we have them right here at High Point!

High Point Scientific is rated 4.9/5 based on 1347 reviews
Shop By Category
Category
  1. ADM Accessories
  2. Apertura
  3. Astronomik
  4. Astro Systems
  5. Astrodon
  6. Astrozap
  7. Atik
  8. Baader Planetarium
  9. Bobs Knobs
  10. Bresser
  11. Bushnell
  12. Celestron
  13. Coronado
  14. DayStar
  15. Dew Not
  16. Explore Scientific
  17. Farpoint Astro
  18. GSO
  19. High Point
  20. Hotech
  21. iOptron
  22. IP4AP
  23. JMI
  24. Kendrick
  25. Ken Press
  26. Konus
  27. Losmandy
  28. Lumicon
  29. Lunt Solar Systems
  30. Meade
  31. Omegon
  32. Optec
  33. Optolong
  34. Orion
  35. Pacific Design
  36. Parallax Instruments
  37. Pegasus Astro
  38. Pentax
  39. Phoenix
  40. PrimaLuceLab
  41. QHY
  42. QSI
  43. Revolution
  44. Rigel Systems
  45. Scopetronix
  46. Sky Engineering
  47. Sky Spot
  48. Sky-Watcher
  49. Simulation Curriculum
  50. Sirius Technologies
  51. Software Bisque
  52. Spectrum Telescope
  53. Star Bound
  54. Star Dust Covers
  55. Starizona
  56. Starlight Instruments
  57. Starlight Xpress
  58. Stellarvue
  59. Takahashi
  60. Tasco
  61. Televue
  62. TeleGizmos
  63. Telrad
  64. Thousand Oaks
  65. Vanguard
  66. Vortex
  67. William Optics
  68. Zhumell
  69. ZWO
Cleaning or Maintenance Product Type
  1. Cleaning Cloth
  2. Cleaning Fluid
  3. Cleaning Kit
  4. Cleaning Pen
  5. Tools & Lubrication
Manufacturer
  1. ADM
  2. Apertura
  3. Astro Systems
  4. Astrodon
  5. Astronomik Filters
  6. Astrozap
  7. Atik Cameras
  8. Baader Planetarium
  9. Bob's Knobs
  10. Bresser
  11. Bushnell
  12. Celestron
  13. Coronado
  14. DayStar Filters
  15. Dew-Not
  16. Explore Scientific
  17. FarPoint
  18. Guan Sheng Optical
  19. High Point
  20. HoTech
  21. Howie Glatter
  22. iOptron
  23. IP4AP
  24. JMI
  25. Ken Press
  26. Kendrick
  27. Konus
  28. Losmandy
  29. Lumicon
  30. Lunt Solar Systems
  31. Meade
  32. Omegon
  33. Optec
  34. Optolong
  35. Orion
  36. Pacific Design
  37. Parallax Instruments
  38. Pegasus Astro
  39. Pentax
  40. Phoenix
  41. PrimaLuceLab
  42. QHY
  43. QSI Imaging
  44. Revolution
  45. Rigel Systems
  46. ScopeTronix
  47. Simulation Curriculum
  48. Sirius Technologies
  49. Sky Engineering
  50. Sky Spot
  51. Sky-Watcher
  52. Software Bisque
  53. Spectrum Telescope
  54. Star Bound
  55. Star Dust Covers
  56. Starizona
  57. Starlight Instruments
  58. Starlight Xpress
  59. Stellarvue
  60. Takahashi
  61. Tasco
  62. Tele Vue
  63. TeleGizmos
  64. Telrad
  65. Thousand Oaks Optical
  66. Vanguard
  67. Vixen
  68. Vortex Optics
  69. William Optics
  70. Zhumell
  71. ZWO Astronomy Cameras
Observing Gear Type
  1. Chairs
  2. Goggles
  3. Hand Warmers
  4. Temperature & Humidity Sensors
  5. Weather Stations
Polar Product Type
  1. Manual Polar Scope
  2. Electronic Polar Scope
  3. Polar Scope Adapter
  4. Polar Scope Illuminators
Tripod or Pier Type
  1. Telescope Tripod
  2. Camera Tripod
  3. Tripod/Pier Combo
  4. Pier
  5. Tripod Accessories
  6. Pier Accessories
Filter Wheel Product Type
  1. Electronic Filter Wheel
  2. Manual Filter Wheel
  3. Carousel Only
  4. Filter Wheel Adapter
Type of Light Accessory
  1. Flashlight
  2. Flashlight & Charger
  3. Flashlight, Hand Warmer & Charger
  4. Laser Pointer
  5. Headlamp/Goggles
  6. Lantern
Filter Wheels by Filter Size
  1. 1.25"
  2. 1.25" or 31 mm
  3. 2"
  4. 36 mm
  5. 50 mm
  6. 50.8 mm
Number of Positions
  1. 5
  2. 6
  3. 7
  4. 8
  5. 9
  6. 11
Shop By Category
Binocular or Accessory Type
  1. Binocular
  2. Monocular
  3. Binocular Tripod Adapters
  4. Binocular Mounts
  5. Far-Sight Accessories
  6. Straps & Holsters
Case, Cover, or Shroud Type
  1. Telescope Cases
  2. Mount Cases
  3. Tripod Cases
  4. Camera Cases
  5. Accessory Cases
  6. Case Accessories
  7. Protective Covers
  8. Light Shields & Shrouds
Collimator Type
  1. Laser Collimators
  2. Cheshire/LitePipe Collimators
  3. Artificial Stars
Color or Monochrome Camera?
  1. Monochrome
  2. Color
Counterweight or Accessory Type
  1. Counterweights for Mounts
  2. Counterweights for Optical Tubes
  3. Counterweights for Dobsonians
  4. Counterweight Shafts & Bars
Finder or Guidescope Type
  1. Guidescopes
  2. Illuminators
  3. Optical Finders - Angled
  4. Optical Finders - Straight Through
  5. Red Dot/Reflex Finders
Focus Product Type
  1. Focusers
  2. Micro Focuser Upgrades
  3. Bahtinov/Focus Masks
  4. Focus Caps
  5. Focuser Electronics
  6. Focus Adapters
  7. Focus Accessories
Optical Design
  1. Refractor
  2. Newtonian Reflector
  3. Cassegrain
  4. Ritchey-Chretien
  5. Celestron EdgeHD
  6. Meade ACF
  7. Exotic
Power Accessory Type
  1. Portable Power Supplies
  2. Power Boxes & Hubs
  3. AC Power
  4. DC Power
  5. Power Accessories
Single Adapter or Adapter Kit
  1. Adapter/Spacer
  2. Adapter/Spacer Kit or Set
Single Filter, Set, or Accessory
  1. Single Filter
  2. Filter Set
  3. Filter Sliders & Adapters
  4. Filter Holders
Solar Filtering Type
  1. Solar Eyepieces
  2. Solar Filters for Telescopes / Lenses
  3. Unmounted Solar Film
  4. Solar Glasses or Viewers
  5. Solar Binoculars
  6. Herschel Wedges
  7. Double Stack Modules
Standard or Speciality Eyepiece?
  1. Standard Eyepiece
  2. Speciality Eyepiece
Type of Dew or Moisture Product
  1. Dew Shields - Hard
  2. Dew Shields - Flexible
  3. Dew Shields - Heated
  4. Dew Controllers
  5. Dew Heaters & Sensors
  6. Dew Caps
  7. Desiccant
  8. Dew Heater Adapters
Type of Mounting Hardware
  1. Dovetails Only
  2. Saddle Plates Only
  3. Rings Only
  4. Dovetail Kits
  5. Saddle Kits
  6. Dovetail/Saddle Kit
  7. MaxGuide/Aiming Kits
  8. Ring/Bracket Combo
  9. Ring Kits
  10. Mount Adapters, Stalks & Accessories
Type of Solar Accessory
  1. Blocking Filters
  2. Continuum/K-Line Filters
  3. Eyepieces, Barlows & Adapters
  4. Hats
  5. Mounting Accessories
  6. Polarizing Filters
  7. Solar Hoods
  8. Sun Finders
Type of Solar Telescope
  1. H-Alpha (Ha)
  2. White Light
Adapter Connector Type - Side A
  1. 1.25"
  2. 2"
  3. 2.4"
  4. 2.7" AP
  5. 3"
  6. 3.3"
  7. 3.5"
  8. 37 mm
  9. 4-Through Hole
  10. 42 mm Unthreaded
  11. 50 mm
  12. 60 SV
  13. C or CS
  14. Custom
  15. ETX 60-80
  16. ETX 90-125/NX4
  17. Large SCT (3.25", 3.28", or 3.3")
  18. M109
  19. M117
  20. M36.4
  21. M43
  22. M44
  23. M52
  24. M54
  25. M56
  26. M63
  27. M68
  28. M69
  29. M72
  30. M75
  31. M81
  32. M84
  33. M88.5
  34. M90
  35. M92
  36. M98
  37. Orion 2" Crayford Focuser
  38. Pentax (M42x1)
  39. Powermate
  40. Ring Clamp
  41. SBIG (2.156")
  42. SESTO SENSO
  43. Small SCT (2")
  44. T or T2 (M42)
  45. Variety of Connectors
  46. Wide T or T2 (M48)
Aperture Range in Inches
  1. 2"
  2. 3"
  3. 4"
  4. 5"
  5. 6"
  6. 7"-8"
  7. 9"-10"
  8. 11"-12"
  9. 13"-14"
  10. 15"-16"
  11. 17"-20"
Binoculars by Magnification
  1. 10X
  2. 12X
  3. 15X
  4. 16X
  5. 18X
  6. 2.1X
  7. 20X
  8. 25X
  9. 31X
  10. 7X
  11. 8.5X
  12. 8X
  13. 9X
  14. Zoom
Cable or Adapter Type
  1. Auxiliary
  2. USB
  3. ST-4 (Guide)
  4. Serial/RS-232
  5. Power
  6. Extension
Camera or Camera Kit
  1. Camera Only
  2. Camera with Integrated Filter Wheel
  3. Camera Kit with External Filter Wheel
  4. Camera Kit with External Filter Wheel & Filters
  5. Camera Kit with External Filter Wheel & OAG
  6. Camera Kit with Integrated Filter Wheel & OAG
  7. Camera Kit for Guiding
Dew Shield/Cap Diameter Range
  1. Up to 6"
  2. 6.1" - 9"
  3. 9.1" - 10"
  4. 10.1" - 12"
  5. 12.1" & Up
Dovetail or Attachment Type
  1. Takahashi Finder Holes
  2. V-Series (Vixen)
  3. D-Series (Losmandy)
  4. Dual (D & V)
  5. Mini
  6. Oversized
  7. Manfrotto/Arca Swiss
  8. Finder Dovetail Base
  9. D/V or V/D Conversion
  10. Mini/V-Series
  11. V-Series/Arca Swiss
Filtering Wavelength
  1. White Light
  2. H-Alpha
  3. Calcium-K / Calcium-H
Fits Products by These Manufacturers
  1. Apertura
  2. Astronomik
  3. Baader
  4. Celestron
  5. Coronado
  6. Explore Scientific
  7. GSO
  8. High Point
  9. iOptron
  10. JMI
  11. Losmandy
  12. Lumicon
  13. Lunt
  14. Meade
  15. Optolong
  16. Orion
  17. Pentax
  18. Rigel Systems
  19. Sky-Watcher
  20. Stellarvue
  21. Takahashi
  22. Tele Vue
  23. Telrad
  24. William Optics
  25. Zhumell
  26. ZWO
Focal Length Range
  1. Up to 5mm
  2. 5.1mm - 8mm
  3. 8.1mm - 10mm
  4. 10.1mm - 15mm
  5. 15.1mm - 20mm
  6. 20.1mm - 25mm
  7. 25.1mm - 32mm
  8. 32.1mm & Up
  9. Variable Focal Length - Zoom or Digital
  10. Multiple Focal Lengths - Eyepiece Set
Focuser Design/Type
  1. Crayford Focusers
  2. Electronic Focusers
  3. Feather Touch Crayford Focusers
  4. Feather Touch Rack & Pinion Focusers
  5. Helical Focusers
  6. Rack & Pinion Focusers
Knobs for Telescopes By
  1. Apertura
  2. Astro-Tech
  3. Celestron
  4. Meade
  5. Orion
  6. Sky-Watcher
  7. Takahashi
Optical Aperture
  1. 30 mm
  2. 39 mm
  3. 50 mm
  4. 60 mm
  5. 61 mm
  6. 70 mm
  7. 80 mm
Parts for Type of Product
  1. For Cameras
  2. For Multiple Product Types
  3. For Telescopes
  4. For Mounts
  5. For Tripods
  6. For Finders
  7. For Accessories
  8. For Sports Optics
  9. Manuals
Primary Purpose of Filter
  1. Color Correction
  2. Imaging
  3. Increase Planetary Detail
  4. Protection
  5. Reduce Light Pollution/Boost Contrast
  6. View the Moon or a Comet
  7. Visual Observations of Nebulae
Single or Double-Stack
  1. Single Etalon
  2. Double-Stack
Weight Range of All Included Counterweights
  1. 5 lb. & Under
  2. 5.1 lb. - 10 lb.
  3. 10.1 lb. - 20 lb.
  4. 20.1 lb. & Up
Adapter Connector Type - Side B
  1. 1.25"
  2. 2"
  3. 2.4"
  4. 3"
  5. 3.3"
  6. 3.5"
  7. 33 mm
  8. 37 mm
  9. 4-Through Hole
  10. 42 mm Unthreaded
  11. 50 mm x 0.75 Pitch
  12. 6-Screw Hole
  13. 6-Through Hole
  14. C or CS
  15. Flange
  16. FLI Microline
  17. HyperStar
  18. Large SCT (3.25", 3.28", or 3.3")
  19. M109
  20. M117
  21. M36.4
  22. M48
  23. M51
  24. M52
  25. M54
  26. M57
  27. M63
  28. M64
  29. M68
  30. M69
  31. M72
  32. M88.5
  33. M90
  34. M92
  35. M98
  36. RASA
  37. Ring Clamp
  38. S68
  39. SBIG (2.156")
  40. Small SCT (2")
  41. T or T2 (M42)
  42. Takahashi FSQ85
  43. Variety of Connectors
  44. Wide T or T2 (48mm)
Binoculars by Aperture
  1. 100mm
  2. 21mm
  3. 25mm
  4. 26mm
  5. 27mm
  6. 28mm
  7. 30mm
  8. 32mm
  9. 35mm
  10. 36mm
  11. 40mm
  12. 42mm
  13. 50mm
  14. 56mm
  15. 60mm
  16. 63mm
  17. 70mm
  18. 80mm
Collimation Accessories by Type
  1. Hotech CT Accessories
  2. Howie Glatter Collimation Accessories
  3. Telescope Adapters
Dovetail, Saddle or Mounting Plate Length Range
  1. Up to 4"
  2. 4.1" - 7.9"
  3. 8" - 12.9"
  4. 13" & Up
Field of View Range
  1. Up to 50°
  2. 51° - 60°
  3. 61° - 70°
  4. 71° - 82°
  5. 83° - 100°
  6. 101° & Up
  7. Variable - Zoom or Digital
  8. Multiple - This is a Set
Filter Type
  1. Clear
  2. CLS/LPR
  3. Color Planetary
  4. Comet
  5. Continuum
  6. Dark
  7. Fringe-Killer/Minus Violet
  8. H-Alpha
  9. H-Beta
  10. Mars/Jupiter
  11. Methane
  12. Multispectra
  13. Narrowband Set
  14. Nebula/Broadband
  15. Neutral Density/Moon
  16. NII
  17. OIII
  18. OWB
  19. Photometric
  20. Polarizing
  21. Pro Planet
  22. RGB
  23. RGB & Narrowband Set
  24. SII
  25. SkyGlow
  26. UHC
  27. UV/IR/Luminance
Finder or Guidescope Magnification
  1. Zero
  2. 6X
  3. 7X
  4. 8X
  5. 9X
  6. 10X
  7. 13X
  8. Variable
Focal Ratio Range
  1. f/2 - f/5.9
  2. f/6 - f/8.9
  3. f/9 - f/11.9
  4. f/12 & higher
Heater Element Length Range
  1. Up to 6"
  2. 6.1" - 20"
  3. 20.1" - 30"
  4. 30.1" - 40"
  5. 40" & Up
Parts by Series, Model or Group
  1. 1.25" Barrel Accessories
  2. 2" Barrel Accessories
  3. Apertura Dobsonians
  4. Celestron Advanced GT
  5. Celestron Advanced VX
  6. Celestron CGE
  7. Celestron CGE Pro
  8. Celestron CGEM
  9. Celestron CPC/CPC DX
  10. Celestron CrossAim
  11. Celestron Evolution
  12. Celestron Finders
  13. Celestron NexStar SE
  14. Celestron PowerTank Lithium
  15. Celestron StarSense
  16. Celestron Ultima
  17. Explore Scientific Refractors
  18. iOptron Controllers
  19. iOptron Mounts
  20. Losmandy Mounts & Tripods
  21. Meade LightBridge
  22. Meade LX200-ACF, LX850-ACF, or LX600-ACF
  23. Meade LX90, ETX 90-125 & LXD75
  24. Orion Telescopes, Mounts & Accessories
  25. Rigel PulsGuide
  26. Starlight Xpress Cameras
  27. Tele Vue Telescopes & Accessories
  28. Telrad Finder
  29. Wide Range of Products
Sensor Resolution Range in Megapixels
  1. 1 MP or Less
  2. 1.1 - 1.9 MP
  3. 2 - 3.9 MP
  4. 4 - 5.9 MP
  5. 6 - 7.9 MP
  6. 8 - 9.9 MP
  7. 10 - 11.9 MP
  8. 12 - 15.9 MP
  9. 16 - 19.9 MP
  10. 20 - 29.9 MP
  11. 30 MP or More
Solar Telescope Aperture
  1. 70 mm
  2. 35 mm
  3. 40 mm
  4. 50 mm
  5. 60 mm
  6. 76 mm
  7. 80 mm
  8. 82 mm
  9. 90 mm
  10. 100 mm
  11. 114 mm
  12. 130 mm
  13. 152 mm
  14. 300 mm
White Light Solar Filter Material
  1. Baader AstroSolar Safety Film / TurboFilm
  2. Glass
  3. Herschel Prism
  4. Mylar Film
  5. Solarlite
Adapter or Spacer Length Range
  1. Less than 1 mm
  2. 1 mm - 5 mm
  3. 5.1 mm - 10 mm
  4. 10.1 mm - 20 mm
  5. 20.1 mm - 30 mm
  6. 30.1 mm - 40 mm
  7. 40.1 mm - 50 mm
  8. 50.1 mm - 60 mm
  9. 60 mm - 90 mm
  10. 90.1 mm & Up
  11. Set of Various Lengths
Barrel Size
  1. 1.25"
  2. 1.25"/2"
  3. 2"
  4. 3"
  5. Bayonet/Screw Mount
Filter Size
  1. 48 mm
  2. C Mount
  3. 27 mm
  4. 31 mm
  5. 31.75 mm (1.25")
  6. 36 mm
  7. 42 mm
  8. 43 mm
  9. 50 mm
  10. 50.4 mm
  11. 50.8 mm (2")
  12. 65 mm
  13. 72 mm RASA
  14. 77 mm
  15. 82 mm
  16. 100 mm & Up
  17. SCT Rear Cell
  18. EOS APS Clip
  19. EOS Full Frame Clip
  20. EOS M Clip
  21. EOS XT APS Clip
  22. M42 x 0.75 mm (T-Thread)
  23. M52
  24. Nikon Full Frame Clip
  25. Pentax K1 Clip
  26. Sony Alpha 7 Clip
  27. Select Canon EOS DSLR Sensors
Focal Length Range
  1. 299mm or less
  2. 300mm - 399mm
  3. 400mm - 599mm
  4. 600mm - 699mm
  5. 700mm - 799mm
  6. 800mm - 999mm
  7. 1000mm - 1299mm
  8. 1300mm - 1499mm
  9. 1500mm - 1799mm
  10. 1800mm - 1999mm
  11. 2000mm - 2299mm
  12. 2300mm - 2499mm
  13. 2500mm - 2999mm
  14. 3000mm or more
Outside Diameter of White Light Filters in Cells
  1. Up to 4" (101.6mm)
  2. 4.1" - 5" (127mm)
  3. 5.1" - 6" (152.4mm)
  4. 6.1" - 9" (228.6mm)
  5. 9.1" - 11" (279.4mm)
  6. 11.1" & Up
Pixel Size Range in Microns
  1. 2.99µm or Less
  2. 3.00µm - 3.68µm
  3. 3.69µm - 3.74µm
  4. 3.75µm - 3.79µm
  5. 3.80µm - 3.99µm
  6. 4.00µm - 4.99µm
  7. 5.00µm - 5.99µm
  8. 6.00µm or More
Rings Size Range
  1. Up to 60 mm (2.4")
  2. 61 mm - 90 mm (3.5")
  3. 91 mm - 120 mm (4.7")
  4. 121 mm - 153 mm (6")
  5. 154 mm - 203 mm (8")
  6. 204 mm & Up
Solar Filter Tuning Type
  1. Doppler True Tuning
  2. Pressure-Tuned
  3. RichView Tuning
  4. Tilt-Tuned
Filter Shape
  1. Round
  2. Square
  3. EOS Clip
  4. Nikon Clip
  5. Pentax Clip
  6. Sony Clip
  7. Replacement Glass
Imaging Camera Series
  1. Atik 11000
  2. Atik 16200
  3. Atik 314
  4. Atik 383
  5. Atik 4000
  6. Atik 4120EX
  7. Atik 414EX
  8. Atik 428
  9. Atik 460
  10. Atik 490 EX
  11. Atik GP
  12. Atik Horizon
  13. Atik Infinity
  14. Atik One
  15. Atik One and GP Combo
  16. Atik Titan
  17. Celestron NexGuide
  18. Celestron NexImage
  19. Celestron Skyris
  20. iOptron iE1300
  21. iOptron iE5100
  22. Meade DSI-IV
  23. Meade LPI-G
  24. Orion Starshoot
  25. QHY Color
  26. QHY Cooled Color
  27. QHY Cooled Mono
  28. QHY Mono
  29. QSI 6120
  30. QSI 640
  31. QSI 660
  32. QSI 683
  33. QSI 690
  34. Revolution Imager R2
  35. Starlight Xpress Lodestar
  36. Starlight Xpress Oculus
  37. Starlight Xpress SuperStar
  38. Starlight Xpress Trius
  39. Starlight Xpress Trius Pro
  40. Starlight Xpress UltraStar
  41. ZWO ASI071
  42. ZWO ASI120
  43. ZWO ASI1600
  44. ZWO ASI174
  45. ZWO ASI178
  46. ZWO ASI183
  47. ZWO ASI224
  48. ZWO ASI290
  49. ZWO ASI294
  50. ZWO ASI385
Telescope Mount Type
  1. No Mount - OTA Only
  2. Alt-Azimuth
  3. Dobsonian
  4. Equatorial
  5. Dual (Alt-Az & Equatorial)
Cooled or Uncooled
  1. Cooled
  2. Uncooled
Eyepiece Series
  1. Apertura Plossl
  2. Apertura Super View
  3. Apertura Super Wide Angle
  4. Apertura Zoom
  5. Baader Classic Ortho
  6. Baader Hyperion
  7. Baader Morpheus
  8. Baader Polaris
  9. Celestron Eyepiece Kits
  10. Celestron Luminos
  11. Celestron Omni
  12. Celestron Speciality Eyepieces
  13. Celestron X-Cel LX
  14. Celestron Zoom
  15. Coronado Cemax
  16. Explore 100°
  17. Explore 120°
  18. Explore 52º
  19. Explore 62º
  20. Explore 68°
  21. Explore 82º
  22. Explore 92º
  23. High Point Plossl
  24. High Point SuperView
  25. iOptron
  26. Lunt Solar Eyepiece
  27. Meade Mega Wide Angle MWA
  28. Meade Series 4000 Plossl
  29. Meade Series 5000 Plossl
  30. Meade Speciality Eyepieces
  31. Meade Ultra Wide Angle
  32. Meade Zoom
  33. Orion DeepView
  34. Orion Edge-On
  35. Orion Expanse
  36. Orion LHD
  37. Orion Q70
  38. Orion Sirius Plossl
  39. Orion Speciality Eyepieces
  40. Orion Stratus
  41. Orion Zoom
  42. Pentax SMC
  43. Pentax XF
  44. Pentax XW
  45. Rigel
  46. Stellarvue Optimus
  47. Stellarvue Planetary
  48. Stellarvue Reticle
  49. Stellarvue Wide Angle
  50. Takahashi UW
  51. Tele Vue DeLite
  52. Tele Vue Delos
  53. Tele Vue Ethos
  54. Tele Vue Nagler
  55. Tele Vue Panoptic
  56. Tele Vue Plossl
  57. Tele Vue Zoom
  58. William Optics CatEye
  59. William Optics Super Planetary
  60. William Optics Super Wide Angle
  61. William Optics XWA Eyepieces
  62. Zhumell Eyepieces
Telescope Series
  1. Apertura Dobsonians
  2. Apertura Imaging Newtonians
  3. Apertura Newtonians
  4. Apertura Refractors
  5. Celestron Advanced
  6. Celestron Advanced VX
  7. Celestron Ambassador
  8. Celestron AstroFi
  9. Celestron AstroMaster
  10. Celestron CGEM II
  11. Celestron CGX
  12. Celestron CGX-L
  13. Celestron Cometron
  14. Celestron CPC
  15. Celestron ExploraScope
  16. Celestron FirstScope
  17. Celestron Inspire
  18. Celestron LCM
  19. Celestron NexStar Evolution
  20. Celestron NexStar SE
  21. Celestron NexStar SLT
  22. Celestron Omni XLT
  23. Celestron OTA
  24. Celestron PowerSeeker
  25. Celestron RASA
  26. Celestron SkyProdigy
  27. Celestron Travel Scope
  28. Explore AR Air-Spaced Doublet
  29. Explore ED Air-Spaced Triplets
  30. Explore FCD100 APO
  31. Explore FirstLight
  32. Explore Reflectors
  33. Explore Truss Dobsonians
  34. GSO Imaging Newtonians
  35. GSO Ritchey-Chretiens
  36. iOptron Cube Pro
  37. iOptron Mak-Cassegrain OTA
  38. iOptron Photron
  39. iOptron SmartStar
  40. iOptron Urban
  41. iOptron Versa
  42. Meade EclipseView
  43. Meade ETX
  44. Meade Infinity
  45. Meade LightBridge
  46. Meade LS
  47. Meade LX200
  48. Meade LX600
  49. Meade LX65
  50. Meade LX85
  51. Meade LX850
  52. Meade LX90
  53. Meade Optical Tube Assemblies
  54. Meade Polaris
  55. Meade Series 6000
  56. Meade StarNavigator
  57. Meade StarPro AZ
  58. Orion Astrograph Newtonian
  59. Orion AstroView
  60. Orion Atlas
  61. Orion CT80
  62. Orion ED66
  63. Orion EON
  64. Orion Observer
  65. Orion Optical Tube Assembly
  66. Orion Sirius
  67. Orion SkyQuest XT
  68. Orion SkyQuest XX
  69. Orion SkyView Pro
  70. Orion SpaceProbe
  71. Orion StarBlast
  72. Orion StarMax
  73. Orion StarSeeker IV
  74. Sky-Watcher Classic Dobsonians
  75. Sky-Watcher Esprit
  76. Sky-Watcher Evostar Pro ED APO
  77. Sky-Watcher Flextube Dobsonian
  78. Sky-Watcher Flextube SynScan Dobsonians
  79. Sky-Watcher Heritage
  80. Sky-Watcher Quattro Imaging Newtonians
  81. Sky-Watcher Skymax/Starlux Telescopes
  82. Sky-Watcher Stargate Dobsonians
  83. Sky-Watcher StarTravel
  84. Sky-Watcher Virtuoso
  85. Stellarvue Little Rascal
  86. Stellarvue Sextuplet
  87. Stellarvue Triplet
  88. Takahashi CCA
  89. Takahashi Epsilon
  90. Takahashi FC
  91. Takahashi FS
  92. Takahashi FSQ
  93. Takahashi Mewlon
  94. Takahashi Starbase
  95. Takahashi TOA
  96. Takahashi TSA
  97. Tasco Telescope/Microscope Package
  98. Tele Vue Doublet APO
  99. Tele Vue Nagler-Petzval APO
  100. Vixen Refractors
  101. William Optics Cat
  102. William Optics FLT
  103. William Optics GT
  104. William Optics WO-Star
  105. William Optics ZenithStar
  106. Zhumell Reflectors
  107. Zhumell Refractors
Type of Electronics
  1. Computerized GoTo
  2. Computerized Push-To
  3. Motorized - No Computerization
  4. Manual Mount - No Electronics
  5. OTA Only - No Electronics
Barlow or Extender by Magnification
  1. 1.5X
  2. 1.6X
  3. 2X
  4. 2.25X
  5. 2.5X
  6. 3X
  7. 4X
  8. 5X
Barlow or Extender Barrel Size
  1. 1.25"
  2. 2"
  3. Threaded
Mount Type
  1. Alt-Azimuth Mounts
  2. Equatorial Mounts
  3. Dual Alt-Az/Equatorial
  4. Camera Tracking System
Weight Capacity Range
  1. Up to 5 lb.
  2. 5 - 10 lb.
  3. 11 - 20 lb.
  4. 21 - 30 lb.
  5. 31 - 40 lb.
  6. 41 - 60 lb.
  7. 61 - 99 lb.
  8. 100 lb. & Up
Type of Mount Electronics
  1. Computerized - GoTo
  2. Manual - No Electronics
  3. Motorized - Non-Computerized
  4. Clockwork - No Electronics
  5. Panorama
Mount Accessories
  1. Accessory Trays & Holders
  2. Alignment & GoTo
  3. Ball Heads & Adapters
  4. Controllers & JoySticks
  5. Motor Drives & Tracking
  6. Mount Hardware Upgrades
  7. Wedges & Adapter Plates
  8. Wheeley Bars & Dollies
  9. WiFi & GPS
Mount Electronics Accessories
  1. Alignment & Time
  2. Controllers & Joysticks
  3. Dual-Axis Drives
  4. Electronics Adapters & Cables
  5. Encoders & Computerization
  6. GPS
  7. RA Drives
  8. WiFi Accessories
Camera Accessory Type
  1. Power Adapters
  2. (D)SLR or Mirrorless T or C Rings
  3. Smartphone & Point-and-Shoot Adapters
  4. Camera Lens Adapters
  5. Eyepiece Projection Adapters
  6. Piggy Back Adapters
  7. Camera Angle Adjusters & Rotators
  8. AllSky/Zoom C/CS Lenses
  9. Camera Holder Rings & Accessories
  10. Spectrographs
  11. Shutter Release Cables
  12. Video Astronomy Accessories
  13. CCD/CMOS Camera Windows
  14. ZWO ASIair
DSLR, SLR or Mirrorless Adapters by Brand
  1. Canon
  2. Canon Mirrorless
  3. Nikon
  4. Olympus/Micro 4/3
  5. Pentax
  6. Sony
Diagonal Type
  1. Prism Diagonal
  2. Mirror Diagonal
  3. Correct/Erect Image
Diagonal Size - Eyepiece Side
  1. 1.25" Barrel
  2. 2" Barrel
  3. 3" Barrel
  4. T-2 Threads
Diagonal Size - Telescope Side
  1. 1.25" Barrel
  2. 2" Barrel
  3. 2" Barrel with SCT Adapter
  4. SCT Threads
  5. T-2 Threads
  6. M65x1 Male Thread
Optics Type and/or Coatings
  1. 7-Layer Multi-Coating
  2. Amici Prism
  3. BBHS Coatings
  4. Dielectric Coatings
  5. DuraBright Coatings
  6. Enhanced Aluminum Coatings
  7. Everbrite Coatings
  8. Maxbright Coatings
  9. Quartz Optics
  10. Sitall Optics
  11. XLT Coatings
  12. Zeiss Optics
Eyepiece/Diagonal Accessory Type
  1. Binoviewer Accessories
  2. Binoviewers
  3. Dioptrx
  4. Eyeguards
  5. Eyepiece Caps & Plugs
  6. Eyepiece Rings
  7. Eyepiece/Diagonal Adapters
Guiding Accessory Type
  1. Off-Axis Guiders
  2. Guiding Accessories
  3. Adaptive Optics
Optical Modifier or Adapter
  1. Coma Corrector
  2. Field Flattener
  3. Hyperstar
  4. Reducer
  5. Reducer/Field Flattener
  6. Adapter
Binoviewer or Accessory?
  1. Binoviewer
  2. Binoviewer Accessory
Type of Learning Material
  1. Books
  2. Novelty Items
  3. Planispheres & Charts
  4. Software
  5. Videos
Binoculars by Series
  1. Bresser Condor
  2. Bushnell Powerview
  3. Celestron Cavalry
  4. Celestron Cometron
  5. Celestron Cypress
  6. Celestron Echelon
  7. Celestron Granite
  8. Celestron Nature
  9. Celestron Nature DX
  10. Celestron Oceana
  11. Celestron Outland
  12. Celestron SkyMaster
  13. Celestron Trailseeker
  14. Celestron UpClose
  15. Meade Astro
  16. Meade TravelView
  17. Omegon Wide Field
  18. Orion GiantView
  19. Orion UltraView
  20. Pentax DCF
  21. Vanguard Endeavor
  22. Vanguard Endeavor ED II
  23. Vortex Diamondback
  24. Vortex Kaibab
  25. Vortex Lightning
  26. Vortex Raptor
  27. Vortex Razor
  28. Vortex Recce Pro
  29. Vortex Recon
  30. Vortex Solo
  31. Vortex Vanquish
  32. Vortex Viper
  33. Vortex Vulture
  34. William Optics Semi APO
  35. Zhumell Binoculars
Binoculars by Body Size
  1. Compact Binoculars
  2. Standard Binoculars
  3. Large Binoculars
  4. Monoculars
Microscope Product Type
  1. Optical Microscope
  2. Digital Microscope
  3. Slides & Cover Slips
  4. Microscope Accessories
Spotting Scope Aperture
  1. 40 mm
  2. 50 mm
  3. 56 mm
  4. 60 mm
  5. 65 mm
  6. 70 mm
  7. 80 mm
  8. 90 mm
  9. 100 mm
  10. 127 mm
Spotting Scope Optical Design
  1. Maksutov-Cassegrain
  2. Refractor
  3. Schmidt-Cassegrain
Spotting Scope Body Style
  1. Angled
  2. Straight-Through
Price
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