Focusing

  • Focuser Boss II Focusing Kit - HSM20 - Dual control board
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $720
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  • Focuser Boss II Focusing Kit - HSM20 - Single control board
    Starlight Instruments
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    Starlight Instruments
    Regular price
    $660
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  • Focuser Boss II Focusing Kit - HSM30 - Dual control board
    Starlight Instruments
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    Starlight Instruments
    Regular price
    $720
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  • Focuser Boss II Focusing Kit - HSM30 - Single control board
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $660
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  • Focuser Boss II Focusing Kit - HSM35 - Dual control board
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $720
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  • Focuser Boss II Focusing Kit - HSM35 - Single control board
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $660
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  • FocusLynx Dual-Focus Control System
    Optec
    Vendor
    Optec
    Regular price
    $350
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  • FocusLynx Hand Control
    Optec
    Vendor
    Optec
    Regular price
    $25
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  • FocusLynx Mounting Bracket
    Optec
    Vendor
    Optec
    Regular price
    $55
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  • FocusLynx QuickSync FSQ Motor
    Optec
    Vendor
    Optec
    Regular price
    $325
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  • FocusLynx QuickSync FT20 Motor
    Optec
    Vendor
    Optec
    Regular price
    $325
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  • FocusLynx QuickSync FT20R Motor
    Optec
    Vendor
    Optec
    Regular price
    $325
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  • FocusLynx QuickSync FT30 Motor
    Optec
    Vendor
    Optec
    Regular price
    $325
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  • FocusLynx QuickSync FT40 Motor
    Optec
    Vendor
    Optec
    Regular price
    $325
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  • FocusLynx QuickSync SV20
    Optec
    Vendor
    Optec
    Regular price
    $325
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  • FocusLynx Second Stepper Driver
    Optec
    Vendor
    Optec
    Regular price
    $40
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  • FocusLynx TEC with DirectSync
    Optec
    Vendor
    Optec
    Regular price
    $325
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  • FocusLynx Temperature Probe Kit
    Optec
    Vendor
    Optec
    Regular price
    $125
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  • Focusmate Driver 10:1 (FDF-2004)
    Tele Vue
    Vendor
    Tele Vue
    Regular price
    $240
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  • Gemini Focusing Rotator
    Optec
    Vendor
    Optec
    Regular price
    $3,595
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  • Hand Controller for Electronic Automatic Focuser
    ZWO
    Vendor
    ZWO
    Regular price
    $39.90
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  • Hedrick Focuser (200340)
    Planewave
    Vendor
    Planewave
    Regular price
    $1,150
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  • HSM - Handy Stepper Motor with Manual Focus Over-Ride
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $370
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  • Indicator to computer RS232 cable 10 ft (RSC-2320)
    Tele Vue
    Vendor
    Tele Vue
    Regular price
    $195
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  • Innovative Bahtinov Mask Cover (Patented) for WO 102 & 103 Series Telescopes (CPBM-102)
    William Optics
    Vendor
    William Optics
    Regular price
    $137
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  • Innovative Bahtinov Mask Cover (Patented) for WO FLT132 (CPBM-132)
    William Optics
    Vendor
    William Optics
    Regular price
    $196
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  • M110 35mm extension tube for ESATTO 4"
    PrimaLuce
    Vendor
    PrimaLuce
    Regular price
    $105
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  • M56 15mm extension tube for ESATTO 2" and ARCO 2"
    PrimaLuce
    Vendor
    PrimaLuce
    Regular price
    $45
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  • M81 25mm Extension Tube for ESATTO 3" and ARCO 3"
    PrimaLuce
    Vendor
    PrimaLuce
    Regular price
    $59
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  • MEF3 Fine Focus Upgrade For 2.7", 2.6", 2" Focusers, E-130D and E-180 Astrograph (TKA00733)
    Takahashi
    Vendor
    Takahashi
    Regular price
    $349
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  • Micro Pinion Assembly Takahashi Retrofit, FS60-C,Q,76 (MPA-TAK-FS60/76)
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $430
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  • Micro Pinion Assembly, Fits Takahashi Epsilon E130/E160mm Telescopes
    Starlight Instruments
    Vendor
    Starlight Instruments
    Regular price
    $510
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Personal Upgrade Path

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