OSI

580 products

580 products
JMI Wheeley Bar Tow Handle XL longer upgrade product photograph
Tow Handle XL - Longer Tow handle upgrade.
$45.00
1/2" Speed Dial
$47.30
Farpoint Carey Focus Mask - Celestron 8, post-2008 C-8 scopes (6880158482585)
Farpoint Carey Focus Mask instruction sheet (6880158482585)
Farpoint Carey Focus Mask - Celestron 8, (all post 2008 C-8 scopes)
$24.00
Lumicon female T-thread 2 inch female adapter view 1 of 2
Lumicon female T-thread 2 inch female adapter view 2 of 2
Lumicon Female T-Thread - 2 Inch Female Adapter
$24.20
JMI Combination 1.25 inch Eyepiece and T-Thread Adapter view 1 of 3
JMI Combination 1.25 inch Eyepiece and T-Thread Adapter view 2 of 3
JMI Combination 1.25-inch Eyepiece and T-Thread Adapter
$79.20
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Lumicon 82mm Night Sky Hydrogen-alpha narrowband filter for deep sky observation
Lumicon 82mm Night Sky Hydrogen-α Filter
$435.60
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JMI EV focuser 2-inch drawtube
JMI EV Focuser 2 Inch Drawtube
$40.70
JMI EV focuser base for Cassegrain telescopes
JMI EV Focuser Base - Cassegrain
$74.80
Farpoint Carey focus mask for Celestron 11 Classic
Farpoint Carey focus mask for Celestron 11 Classic – paper template view
Farpoint Carey Focus Mask - Celestron 11 Classic
$30.00
Farpoint 6-inch dovetail saddle for Takahashi telescope, view 1 of 3
Farpoint 6-inch dovetail saddle for Takahashi telescope, view 2 of 3
Farpoint 6 Inch Dovetail Saddle - Takahashi
$145.20
Farpoint Far-Sight mounting screw for Barska binoculars
Farpoint Far-Sight Barska Binocular Mounting Screw
$12.10
Farpoint Primary Mirror Center Marking Kit product photograph reused from Up to 12.5 inch canonical variant (gid://shopify/Product/6795870535833) displayed on LARGE 12 to 26 inch variant card
Farpoint Primary Mirror Center Marking Kit LARGE — 12" to 26"
$30.00
Battery Pack XL
$121.00
Lumicon 1.25-inch #29 Dark Red eyepiece color filter for lunar and planetary viewing
Lumicon 1.25 Inch #29 Dark Red Color Filter
$52.80
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Lumicon 1.25-inch #23A Light Red eyepiece color filter for lunar and planetary viewing
Lumicon 1.25 Inch #23A Light Red Color Filter
$52.80
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Lumicon 58mm Night Sky Hydrogen-alpha narrowband filter, view 1 of 2
Lumicon 58mm Night Sky Hydrogen-alpha narrowband filter, view 2 of 2
Lumicon 58mm Night Sky Hydrogen-α Filter
$144.10
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JMI carrying case for Meade LS-6 and LS-8 telescopes, closed view
JMI carrying case for Meade LS-6 and LS-8 telescopes, open showing interior
JMI Telescope Carrying Case - Meade LS-6/LS-8
$548.89
Farpoint dovetail ring screws, short 0.5 inch length, set of six
Farpoint dovetail ring screws, short 0.5 inch length
Farpoint Dovetail Ring Screws, Short .5" Length (Set of 6)
$25.30
Farpoint FDA ball-head camera adapter, product view (7003423047833)
Farpoint FDA ball-head camera adapter mounted on a telescope (7003423047833)
Farpoint FDA Ball Head Camera Adapter
$139.70
Farpoint clear Bahtinov focus mask, 85mm square (6928541319321)
Farpoint Bahtinov focus mask product line image
Farpoint Clear Bahtinov Focus Mask — 85mm Square
$30.00
Lumicon 2 inch multiple filter selector T-thread view 1 of 4
Lumicon 2 inch multiple filter selector T-thread view 2 of 4
Lumicon 2 Inch Multiple Filter Selector - T-Thread
$145.20
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Lumicon 1.25-inch single polarizing filter for telescope eyepiece glare reduction
Lumicon 1.25 Inch Single Polarizing Filter
$49.50
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JMI MotoFocus+ Meade ETX view 1 of 3
JMI MotoFocus+ Meade ETX view 2 of 3
JMI MotoFocus+ Meade ETX
$240.90
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JMI EV focuser 2.5-inch drawtube
JMI EV Focuser 2.5 Inch Drawtube
$44.00
JMI EV focuser base for Newtonian telescopes
JMI EV Focuser Base - Newtonian
$80.30
Farpoint tripod knob kit, silver
Farpoint tripod knob kit, silver, close-up
Farpoint Tripod Knob Kit - Silver
$40.70
Farpoint Carey focus mask for Celestron 9.25 Classic
Farpoint Carey focus mask for Celestron 9.25 Classic – paper template view
Farpoint Carey Focus Mask - Celestron 9.25 Classic
$27.00
Farpoint Carey focus mask for Meade 12-inch SCT
Farpoint Carey focus mask for Meade 12-inch SCT – paper template view
Farpoint Carey Focus Mask - Meade 12 Inch SCT
$36.00
Farpoint Bahtinov focus mask for ASA 10 telescope, square mask design
Farpoint Bahtinov focus mask product line image
Farpoint Bahtinov Focus Mask — ASA 10
$30.00