Accessories

  • "No-Shift" Focuser for Celestron Schimdt-Cassegrain Telescopes
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $515
    Sale price
    save $-515
    Unit price
    per 
  • "Shorty" Single-Level Support Bar for Pier Accessory Trays (TRAYSB1)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $48
    Sale price
    save $-48
    Unit price
    per 
  • "T" Shaped finder scope base for Essential Series Telescopes with Screws (FNDRBASE-ESSEN)
    Explore Scientific
    Vendor
    Explore Scientific
    Regular price
    $49.99
    Sale price
    save $-49.99
    Unit price
    per 
  • #10 Sky 90 Coupling (DT) (TKP35001)
    Takahashi
    Vendor
    Takahashi
    Regular price
    $97
    Sale price
    save $-97
    Unit price
    per 
  • #11 Yellow-Green Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $55
    Sale price
    save $-55
    Unit price
    per 
  • #12 Deep Yellow Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $55
    Sale price
    save $-55
    Unit price
    per 
  • #13 Neutral Density Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $58.30
    Sale price
    save $-58.30
    Unit price
    per 
  • #21 Orange Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $52.80
    Sale price
    save $-52.80
    Unit price
    per 
  • #23A Light Red Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $52.80
    Sale price
    save $-52.80
    Unit price
    per 
  • #25 Neutral Density Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    Sold out
    Sale price
    save $-58.30
    Unit price
    per 
  • #29 Dark Red Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $52.80
    Sale price
    save $-52.80
    Unit price
    per 
  • #38A Dark Blue Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $45.10
    Sale price
    save $-45.10
    Unit price
    per 
  • #47 Purple Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    Sold out
    Sale price
    save $-44
    Unit price
    per 
  • #56 Green Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    Sold out
    Sale price
    save $-45.10
    Unit price
    per 
  • #58 Dark Green Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $44
    Sale price
    save $-44
    Unit price
    per 
  • #8 Light Yellow Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    Sold out
    Sale price
    save $-52.80
    Unit price
    per 
  • #80A Blue Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    $44
    Sale price
    save $-44
    Unit price
    per 
  • #82A Light Blue Filter
    Lumicon
    Vendor
    Lumicon
    Regular price
    Sold out
    Sale price
    save $-48.40
    Unit price
    per 
  • (Discontinued) 2" TO 1.25" ADAPTER W/ TWIST-LOCK (93668)
    Celestron
    Vendor
    Celestron
    Regular price
    Sold out
    Sale price
    save $-44.95
    Unit price
    per 
  • (Discontinued) Cable, USB to RS-232 Converter (18775)
    Celestron
    Vendor
    Celestron
    Regular price
    $27.95
    Sale price
    save $-27.95
    Unit price
    per 
  • (Discontinued) NexStar RS-232 Cable (93920)
    Celestron
    Vendor
    Celestron
    Regular price
    Sold out
    Sale price
    save $-22.95
    Unit price
    per 
  • (DISCONTINUED) ZWO Filter Holder (M42)
    ZWO
    Vendor
    ZWO
    Regular price
    $35
    Sale price
    save $-35
    Unit price
    per 
  • (Discontinued) ZWO New Narrowband 31mm Filter
    ZWO
    Vendor
    ZWO
    Regular price
    $149
    Sale price
    save $-149
    Unit price
    per 
  • .72x Quad-Telecompressor Corrector
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $1,767
    Sale price
    save $-1,767
    Unit price
    per 
  • 0.72x Quad Telecompressor Corrector for 155f7 EDFS
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $1,767
    Sale price
    save $-1,767
    Unit price
    per 
  • 0.76x CCD Telecompressor Corrector for 155 f/7 StarFire EDF (f/5.3) and 140 f/7.5 StarFire EDF (f/5.7) (155TCC)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $1,520
    Sale price
    save $-1,520
    Unit price
    per 
  • 0.77x Reducer/Flattener for Esprit 120 (S20209)
    Sky-Watcher USA
    Vendor
    Sky-Watcher USA
    Regular price
    $500
    Sale price
    save $-500
    Unit price
    per 
  • 0.77x Reducer/Flattener for Esprit 150 (S20215)
    Sky-Watcher USA
    Vendor
    Sky-Watcher USA
    Regular price
    $500
    Sale price
    save $-500
    Unit price
    per 
  • 0.77x Reducer/Flattener for Esprit 150DX (S20208)
    Sky-Watcher USA
    Vendor
    Sky-Watcher USA
    Regular price
    $500
    Sale price
    save $-500
    Unit price
    per 
  • 0.8x CCD Telecompressor for 92mm Stowaway and Traveler. Requires 2.5" DoveLoc End Cap that comes with 92mm F6.65 Stowaway or EC2725 for Traveler. (92TCC)
    Astro-Physics
    Vendor
    Astro-Physics
    Regular price
    $627
    Sale price
    save $-627
    Unit price
    per 
  • 0.8x Reducer for NP Scopes
    Tele Vue
    Vendor
    Tele Vue
    Regular price
    $245
    Sale price
    save $-245
    Unit price
    per 
  • 0.8x Reducer for NP Scopes
    Tele Vue
    Vendor
    Tele Vue
    Regular price
    $495
    Sale price
    save $-495
    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.