Products

  • 3" visual back for ESATTO 3.5” LP
    PrimaLuce
    Vendor
    PrimaLuce
    Regular price
    $114
    Sale price
    save $-114
    Unit price
    per 
  • 3"x24tpi Male Thread To 3"x24tpi Male Thread (19370 )
    Optec
    Vendor
    Optec
    Regular price
    $100
    Sale price
    save $-100
    Unit price
    per 
  • 3"x24tpi Male Thread To OPTEC-3600 Dovetail Receiver (19373)
    Optec
    Vendor
    Optec
    Regular price
    $100
    Sale price
    save $-100
    Unit price
    per 
  • 3"x24tpi Male Thread To STL 2.156"x24tpi Thread Adapter (19372)
    Optec
    Vendor
    Optec
    Regular price
    $100
    Sale price
    save $-100
    Unit price
    per 
  • 3"x24tpi Male Thread To T-Thread Adapter (19371)
    Optec
    Vendor
    Optec
    Regular price
    $100
    Sale price
    save $-100
    Unit price
    per 
  • 3-inch Self-Centering Focuser (ES-FOC3)
    Explore Scientific
    Vendor
    Explore Scientific
    Regular price
    $849.99
    Sale price
    save $-849.99
    Unit price
    per 
  • 3-lb weight for Dovetail Weight System (FDW3)
    Farpoint
    Vendor
    Farpoint
    Regular price
    $35.20
    Sale price
    save $-35.20
    Unit price
    per 
  • 3-Piece Replacement Dust Cover Set for 2" Ports (19608)
    Optec
    Vendor
    Optec
    Regular price
    $125
    Sale price
    save $-125
    Unit price
    per 
  • 3-position Filter Slider (17452)
    Optec
    Vendor
    Optec
    Regular price
    $95
    Sale price
    save $-95
    Unit price
    per 
  • 3.5" Adapter for 4" Focuser (ADA435)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $169
    Sale price
    save $-169
    Unit price
    per 
  • 3.5" Focuser to SBIG STL Camera Adapter (ADA35STL)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $109
    Sale price
    save $-109
    Unit price
    per 
  • 3.5" Prime Focus Field Flattener for 130GTX serial #130GTX-600 to 130GTX-899 (13035FF-2)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $969
    Sale price
    save $-969
    Unit price
    per 
  • 3.5" Prime Focus Field Flattener for 130GTX serial #130GTX-900 and higher and any 130EDFGT upgraded to 3.5" Focuser (13035FF-3)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $969
    Sale price
    save $-969
    Unit price
    per 
  • 3.5" Rotating Focuser with Feather Touch Micro 9:1 Dual-Speed (35FOCER-FT)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $1,653
    Sale price
    save $-1,653
    Unit price
    per 
  • 3.5mm smc XW Series Eyepiece (1.25")
    Pentax
    Vendor
    Pentax
    Regular price
    $299
    Sale price
    save $-299
    Unit price
    per 
  • 300 Astronomical Objects: A Visual Reference to the Universe
    Firefly Books
    Vendor
    Firefly Books
    Regular price
    $29.95
    Sale price
    save $-29.95
    Unit price
    per 
  • 30F5 Mini Guide Scope
    ZWO
    Vendor
    ZWO
    Regular price
    $149
    Sale price
    save $-149
    Unit price
    per 
  • 30lb Counterweight for Paramount ME II
    Software Bisque
    Vendor
    Software Bisque
    Regular price
    $455
    Sale price
    save $-455
    Unit price
    per 
  • 30mm Long 42mm Extension Tube (SFE-M42-030)
    Stellarvue
    Vendor
    Stellarvue
    Regular price
    $19
    Sale price
    save $-19
    Unit price
    per 
  • 30mm Long 48mm Extension Tube
    Stellarvue
    Vendor
    Stellarvue
    Regular price
    $19
    Sale price
    save $-19
    Unit price
    per 
  • 30mm smc XW Series Eyepiece (2")
    Pentax
    Vendor
    Pentax
    Regular price
    $399
    Sale price
    save $-399
    Unit price
    per 
  • 31mm LRGB Filters
    ZWO
    Vendor
    ZWO
    Regular price
    $169
    Sale price
    save $-169
    Unit price
    per 
  • 32.7mm Adapter for SBIG ST/ST-2000 Cameras (TCD0327)
    Takahashi
    Vendor
    Takahashi
    Regular price
    $154
    Sale price
    save $-154
    Unit price
    per 
  • 324CW Double Ring Tube Holder for Mewlon-300CRS (TKA85420)
    Takahashi
    Vendor
    Takahashi
    Regular price
    $1,430
    Sale price
    save $-1,430
    Unit price
    per 
  • 32mm Abbe Eyepiece (1.25")
    Takahashi
    Vendor
    Takahashi
    Regular price
    $228
    Sale price
    save $-228
    Unit price
    per 
  • 33 lb. Stainless Steel Counterweight for 2.5" Shaft - 3600GTO and 3600GTOPE (33SCWT)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $480
    Sale price
    save $-480
    Unit price
    per 
  • 33mm Long 69 mm Extension Tube (SFE-M69-033)
    Stellarvue
    Vendor
    Stellarvue
    Regular price
    $49
    Sale price
    save $-49
    Unit price
    per 
  • 34" Tripod Bag (94028)
    Celestron
    Vendor
    Celestron
    Regular price
    $104.95
    Sale price
    save $-104.95
    Unit price
    per 
  • 35.0mm T-Thread Spacer for QHY 8/10/12 Cameras (TCD0350)
    Takahashi
    Vendor
    Takahashi
    Regular price
    $184
    Sale price
    save $-184
    Unit price
    per 
  • 36.5mm Long 69 mm Male to 48 mm Male Extension (SFE-M69M48-036.5)
    Stellarvue
    Vendor
    Stellarvue
    Regular price
    $29
    Sale price
    save $-29
    Unit price
    per 
  • 36.5mm x 2" Adapter For Turret (TKA00105)
    Takahashi
    Vendor
    Takahashi
    Regular price
    $147
    Sale price
    save $-147
    Unit price
    per 
  • 365 Series Covers
    Telegizmos
    Vendor
    Telegizmos
    Regular price
    $49
    Sale price
    save $-49
    Unit price
    per 


Personal Upgrade Path

Buy risk-free: When it’s time to trade up you’ll get the most value for your used gear.