OSI

580 products

580 products
Farpoint Universal D-size 57.3 series dovetail plate, 21.5 inch length
Farpoint Universal D-size 57.3 series dovetail plate, alternate view
Farpoint 21.5 Inch 57.3 Series Universal Dovetail Plate (Radian Bar)
$157.30
Lumicon eyepiece reducer, 1.25 inch male to .965 inch female threads
Lumicon 1.25 Inch Male - .965 Inch Female Reducer
$24.20
Lumicon 1.25-inch #12 Deep Yellow eyepiece color filter for lunar and planetary viewing
Lumicon 1.25 Inch #12 Deep Yellow Color Filter
$56.10
Farpoint dovetail radius block for Meade 12-inch SCT telescope tube
Farpoint Dovetail Radius Block - Meade 12 Inch SCT
$79.20
Farpoint Adjustable Tri-Bahtinov Mask for 8.5 to 11.5 inch OTAs, product view
Farpoint Tri-Bahtinov focus mask diffraction pattern illustrating telescope collimation analysis
Farpoint Adjustable Tri-Bahtinov Mask — 8.5" to 11.5" OTAs
$39.00
Lumicon SCT female to 2 inch female telescope adapter view 1 of 4
Lumicon SCT female to 2 inch female telescope adapter view 2 of 4
Lumicon SCT Female - 2 Inch Female Adapter
$31.90
Farpoint Tri-Bahtinov focus mask for Meade 12" LX850 telescope
Farpoint Tri-Bahtinov focus mask diffraction pattern illustrating telescope collimation analysis
Farpoint Tri-Bahtinov Mask — Meade 12" LX850
$43.00
Lumicon 2-inch #29 dark red color filter for telescope eyepieces
Lumicon 2 Inch #29 Dark Red Color Filter
$67.10
Lumicon 2-inch #25 red color filter for telescope eyepieces
Lumicon 2 Inch #25 Red Color Filter
$73.70
Lumicon 1.25-inch #21 Orange eyepiece color filter, view 1 of 2
Lumicon 1.25-inch #21 Orange eyepiece color filter, view 2 of 2
Lumicon 1.25 Inch #21 Orange Color Filter
$52.80
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Lumicon 2-inch Easy Guider, view 1 of 5
Lumicon 2-inch Easy Guider, view 2 of 5
Lumicon 2 Inch Easy Guider
$361.90
Farpoint Bahtinov focus mask for Meade 12-inch LX850
Farpoint Bahtinov focus mask product line image
Farpoint Bahtinov Focus Mask — Meade 12" LX850
$36.00
Farpoint 90mm D-style dovetail rings, view 1 of 6
Farpoint 90mm D-style dovetail rings, view 2 of 6
Farpoint 90mm D Style Dovetail Rings
$133.10
Farpoint Vixen dovetail plate for Celestron 9.25-inch SCT (pre-2008), product view
Farpoint Vixen dovetail plate for Celestron 9.25-inch SCT (pre-2008), alternate view
Farpoint Vixen Dovetail Plate - Celestron 9.25 Inch SCT (pre 2008)
$96.80
Farpoint dew shield for Meade 14-inch SCT telescope, exterior view
Farpoint dew shield for Meade 14-inch SCT, interior view showing flocked surface
Farpoint Dew Shield - Meade 14 Inch SCT
$86.00
Farpoint Tri-Bahtinov focus mask sized for the Meade LX200 16-inch f/10 SCT, viewed face-on
Farpoint Tri-Bahtinov focus mask diffraction pattern illustrating telescope collimation analysis
Farpoint Tri-Bahtinov Mask — Meade LX200 16" f/10 SCT
$69.00
Lumicon 2 inch barrel prime focus camera adapter for Canon EF mount
Lumicon Prime Focus Camera Adapter 2" Barrel direct to Canon EF Mount
$60.50
Farpoint Adjustable Bahtinov Focus Mask — 8.5 to 11.5 inch OTAs (6860739412121)
Farpoint Bahtinov focus mask product line image
Farpoint Adjustable Bahtinov Focus Mask — 8.5" to 11.5" OTAs
$32.00
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Lumicon 2-inch #12 deep yellow color filter for telescope eyepieces
Lumicon 2 Inch #12 Deep Yellow Color Filter
$55.00
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JMI MotoFocus+ HUSC adapter, product view
JMI MotoFocus+ hand controller
JMI Motofocus+ HUSC-Adapter
$48.40
Farpoint Bahtinov focus mask for Cokin P 84mm camera filter holder
Farpoint Bahtinov focus mask product line image
Farpoint Bahtinov Focus Mask — Cokin P (84mm)
$16.00
Farpoint dovetail plate for Takahashi clamshell with two mounting positions, product view
Farpoint dovetail plate for Takahashi clamshell with two mounting positions, with shell attached
Farpoint Dovetail Plate - Takahashi Clamshell -Two Mounting Positions
$108.90
Farpoint dovetail radius block for Celestron 11-inch SCT telescope tube
Farpoint Dovetail Radius Block - Celestron 11 Inch SCT
$55.00
Farpoint dew shield for Meade 16-inch SCT telescope, exterior view
Farpoint dew shield for Meade 16-inch SCT, interior view showing flocked surface
Farpoint Dew Shield - Meade 16 Inch SCT
$110.00
Farpoint clear Bahtinov focus mask, 150mm square (6928557834393)
Farpoint Bahtinov focus mask product line image
Farpoint Clear Bahtinov Focus Mask — 150mm Square
$44.00
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Lumicon 2-inch Easy Guider for DSLR cameras, product view
Lumicon 2-inch Easy Guider for DSLR cameras, alternate view
Lumicon 2 Inch Easy Guider for DSLR cameras
$361.90
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Lumicon 2-inch variable polarizing filter for telescope eyepiece glare reduction
Lumicon 2 Inch Variable Polarizing Filter
$135.30
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Lumicon 1.25-inch variable polarizing filter, view 1 of 4
Lumicon 1.25-inch variable polarizing filter, view 2 of 4
Lumicon 1.25 Inch Variable Polarizing Filter
$96.80
Lumicon 2-inch #58 dark green color filter for telescope eyepieces
Lumicon 2 Inch #58 Dark Green Color Filter
$108.90
JMI coiled cord for JMI hand units
JMI Coiled Cord - JMI Hand Units
$23.10
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JMI MotoFocus+ motor focuser drive for Celestron NexStar 127 SLT
JMI MotoFocus+ Celestron NexStar 127 SLT
$240.90
Farpoint 1.25 inch T-ring prime focus adapter
Farpoint 1.25 Inch T-Ring Prime Focus Adapter
$24.20
Farpoint Carey focus mask for Celestron 8 Classic
Farpoint Carey focus mask for Celestron 8 Classic – paper template view
Farpoint Carey Focus Mask - Celestron 8 Classic
$24.00
Farpoint Carey focus mask for 6.5-inch to 9.5-inch telescopes
Farpoint Carey focus mask grommet and screw mounting hardware
Farpoint Carey Focus Mask - 6.5 Inch to 9.5 Inch Telescopes
$28.00