OSI

580 products

580 products
JMI Wheeley Bar Half Tie Down Bracket Kit product photograph
JMI Wheeley Bars Tie Down Bracket Kit with full telescope setup (6874904592537)
Wheeley Bar "Half bracket" Tie Down Bracket Kit
$99.00
Farpoint Adjustable Bahtinov focus mask for 12 to 15 inch OTAs
Farpoint Bahtinov focus mask product line image
Farpoint Adjustable Bahtinov Focus Mask — 12" to 15" OTAs
$41.00
Farpoint dovetail plate for Celestron 8 inch RASA, view 1 of 9
Farpoint dovetail plate for Celestron 8 inch RASA, close-up view 2 of 9
Farpoint Dovetail Plate - Celestron 8 Inch RASA
$121.00
Tripod mounting post for Farpoint Universal Binocular Mount (UBM)
Tripod Mounting Post for Universal Binocular Mount (UBM)
$29.00
Farpoint notched dew shield for Meade 10-inch SCT telescope, exterior view
Farpoint notched dew shield for Meade 10-inch SCT, interior view showing flocked surface
Farpoint Notched Dew Shield - Meade 10 Inch SCT
$53.00
Farpoint Bahtinov focus mask fitted on a Meade LX200 16-inch f/10 SCT, used to set precise focus for astrophotography
Farpoint Bahtinov focus mask product line image
Farpoint Bahtinov Focus Mask — Meade LX200 16" f/10 SCT
$62.00
Lumicon 1.25 inch prime focus camera adapter
Lumicon 1.25 Inch Prime Focus Camera Adapter
$24.20
Lumicon 7-piece nylon thumbscrew set, 1/4-20 x 3/4-inch size
Lumicon 7 Piece Nylon Thumbscrew Set - 1/4-20 x 3/4
$9.90
Lumicon 2-inch minus violet filter for reducing chromatic aberration
Lumicon 2" Minus Violet Filter – Reduces Chromatic Aberration
$96.80
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Lumicon 1.25-inch #82A light blue color filter for telescope eyepieces
Lumicon 1.25 Inch #82A Light Blue Color Filter
$48.40
Farpoint notched dew shield for Celestron 11-inch SCT, product overview
Farpoint dew shield interior surface showing flocked light-absorbing lining
Farpoint Notched Dew Shield - Celestron 11 Inch SCT
$55.00
JMI EV2-C Event Horizon telescope focuser for Cassegrain, view 1 of 6
JMI EV2-C Event Horizon Telescope Focuser - Cassegrain
$380.00
Farpoint clear Bahtinov focus mask, 100mm square (6928552099993)
Farpoint Bahtinov focus mask product line image
Farpoint Clear Bahtinov Focus Mask — 100mm Square
$32.00
Farpoint Tri-Bahtinov focus mask for Meade LX850 and LX600 14-inch f/8 Schmidt-Cassegrain (6912214073497)
Farpoint Tri-Bahtinov focus mask diffraction pattern illustrating telescope collimation analysis
Farpoint Tri-Bahtinov Mask — Meade LX850/LX600 14" f/8 SCT
$55.00
Lumicon female T-thread 1.25 inch female adapter view 1 of 2
Lumicon female T-thread 1.25 inch female adapter view 2 of 2
Lumicon Female T-Thread - 1.25 Inch Female Adapter
$18.70
Lumicon 1.25-inch #11 Yellow-Green eyepiece color filter for lunar and planetary viewing
Lumicon 1.25 Inch #11 Yellow-Green Color Filter
$55.00
Farpoint Bahtinov focus mask for Cokin Z 103mm camera filter holder
Farpoint Bahtinov focus mask product line image
Farpoint Bahtinov Focus Mask — Cokin Z (103mm)
$16.00
Tripod Mounting Post for Universal Binocular Mount (UBM) (6795848253593)
Tripod Mounting Post for Universal Binocular Mount 5/8-11 Thread
$29.00
Farpoint 12 Volt 6 Amp Power Supply
Farpoint 12 Volt 6 Amp Power Supply — alternate view
Power Supply, 12 Volt, 6 Amp
$30.80
Square FP439 (6795777736857)
Farpoint Bahtinov focus mask product line image
Farpoint Bahtinov Focus Mask — 55mm DSLR Lens
$16.00
Lumicon 1.25-inch Neutral Density 25 filter for telescope eyepiece
Lumicon 1.25 Inch Neutral Density 25 Filter
$58.30
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Lumicon 2-inch Night Sky Hydrogen-alpha narrowband filter for deep sky observation
Lumicon 2 Inch Night Sky Hydrogen-α Filter
$92.40
Farpoint collimation spring kit for Meade 12-inch LightBridge
Farpoint Collimation Spring Kit - Meade 12 Inch LightBridge
$20.90
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Farpoint reusable dry pack desiccant for telescope and accessory storage
Farpoint reusable dry pack showing color-change indicator beads
Farpoint Reusable Dry Pack
$16.50
Farpoint Adjustable Tri-Bahtinov Mask for 12 to 15 inch OTAs, product view
Farpoint Tri-Bahtinov focus mask diffraction pattern illustrating telescope collimation analysis
Farpoint Adjustable Tri-Bahtinov Mask — 12" to 15" OTAs
$47.00
Lumicon filter boxes for 1.25-inch filters, set of 5
Lumicon filter boxes for 1.25-inch filters, set of 5, alternate view
Lumicon Filter Boxes for 1.25" filters, Set of 5
$27.50
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Farpoint dovetail plate for Vixen VMC260L OTA, product view
Farpoint dovetail plate for Vixen VMC260L OTA, mounting holes detail
Farpoint Dovetail Plate - Vixen VMC260L OTA
$181.50
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Lumicon optical cleaner dropper bottle
Lumicon Optical Cleaner Dropper
$9.90