Telescope Dew Shield Finder
Not sure which dew shield fits your telescope? Use our cross-reference guide below to find the exact Farpoint flexible dew shield for your scope — by brand, model, and mount series.
Why Every Telescope Needs a Dew Shield
Dew formation is one of the most common frustrations for visual observers and astrophotographers alike. When the temperature of your telescope's corrector plate or objective lens drops below the ambient dew point, moisture condenses directly on the optic — blurring your view, ruining long-exposure images, and potentially ending your observing session early.
A flexible dew shield extends the tube of your telescope, slowing radiative heat loss from the front optic and delaying or preventing dew formation entirely. A well-fitted shield can keep your optics clear all night, even in humid conditions common across the central valley, Gulf Coast, and eastern states.
Farpoint flexible dew shields are made from durable ABS polymer and lined with black flocking felt to eliminate internal reflections. They unroll flat for compact storage and attach securely with hook-and-loop fasteners — no tools, no clamps, no hassle.
Farpoint Dew Shield Features
- Precision-sized for specific telescope models — not generic one-size tubes
- ABS polymer construction — virtually indestructible and UV resistant
- Black felt lining reduces stray light and prevents scratches on optics
- Hook-and-loop closure — stores flat, deploys in seconds
- Notched options available for dovetail bar clearance
- Proudly made in the USA
Find Your Shield
Enter your tube outer diameter, or pick your telescope from the dropdown. We'll point you straight at the right Farpoint dew shield.
1 Enter your tube OD
Measure the outside of your telescope's optical tube where the corrector plate or front lens sits.
2 Or pick your telescope
200+ catalog telescopes across 9 brands. Not listed? Use the tube-OD method on the left.
| Telescope Model | Mount Series | Farpoint Part # | Shield Type / Notch |
|---|---|---|---|
| Celestron NexStar SE Series | |||
| NexStar 4SE Maksutov | NexStar SE | FP336 | Celestron 4/4SE — No notch |
| NexStar 5SE SCT | NexStar SE | FP337 | Celestron 5/5SE — No notch |
| NexStar 6SE SCT | NexStar SE | FP339 | Celestron 6SE — No notch |
| NexStar 8SE SCT | NexStar SE | FP351 | 8″ Notched — Side bar notch |
| Celestron NexStar SLT Series | |||
| NexStar 90 SLT Maksutov | NexStar SLT | No FP SKU — coverage gap | — |
| NexStar 102 SLT Refractor | NexStar SLT | FP336 | Celestron 4/4SE — No notch |
| NexStar 127 SLT Maksutov | NexStar SLT | FP338 | NexStar SLT 127 — No notch |
| NexStar 130 SLT Newtonian | NexStar SLT | No FP SKU — coverage gap | — |
| Celestron NexStar Evolution Series | |||
| NexStar Evo 6″ SCT | NexStar Evolution | FP339 | Celestron 6SE — No notch |
| NexStar Evo 8″ SCT | NexStar Evolution | FP351 | 8″ Notched — Side bar notch |
| NexStar Evo 8″ EdgeHD w/StarSense | NexStar Evolution | FP351 | 8″ Notched — Side bar notch |
| NexStar Evo 9.25″ SCT | NexStar Evolution | FP354 | Celestron 9.25″ — No notch |
| Celestron StarSense Explorer Series | |||
| StarSense Explorer DX 5″ SCT | StarSense | FP337 | Celestron 5/5SE — No notch |
| Celestron Advanced VX Series | |||
| AVX 6″ Newtonian | Advanced VX | No FP SKU — coverage gap | — |
| AVX 6″ SCT | Advanced VX | FP339 | Celestron 6SE — No notch |
| AVX 7″ Maksutov | Advanced VX | No FP SKU — coverage gap | — |
| AVX 8″ Newtonian | Advanced VX | No FP SKU — coverage gap | — |
| AVX 8″ SCT | Advanced VX | FP351 | 8″ Notched — Side bar notch |
| AVX 8″ EdgeHD | Advanced VX | FP351 | 8″ Notched — Side bar notch |
| AVX 8″ RASA | Advanced VX | FP351 | 8″ Notched — Side bar notch |
| AVX 9.25″ SCT | Advanced VX | FP355 | 9.25″ Notched — Lower dovetail |
| AVX 9.25″ EdgeHD | Advanced VX | FP355 | 9.25″ Notched — Lower dovetail |
| AVX 11″ SCT | Advanced VX | FP359 | 11″ Notched — Lower dovetail |
| Celestron CGX Series | |||
| CGX 700 Maksutov | CGX | No FP SKU — coverage gap | — |
| CGX 800 SCT | CGX | FP351 | 8″ Notched — Lower dovetail |
| CGX 800 EdgeHD | CGX | FP351 | 8″ Notched — Lower dovetail |
| CGX 8″ RASA | CGX | FP351 | 8″ Notched — Lower dovetail |
| CGX 925 SCT | CGX | FP355 | 9.25″ Notched — Lower dovetail |
| CGX 925 EdgeHD | CGX | FP355 | 9.25″ Notched — Lower dovetail |
| CGX 1100 SCT | CGX | FP359 | 11″ Notched — Lower dovetail |
| CGX 1100 EdgeHD | CGX | FP359 | 11″ Notched — Lower dovetail |
| CGX 1100 RASA V2 | CGX | FP359 | 11″ Notched — Lower dovetail |
| Celestron CGX-L Series | |||
| CGX-L 925 SCT | CGX-L | FP355 | 9.25″ Notched — Lower dovetail |
| CGX-L 925 EdgeHD | CGX-L | FP355 | 9.25″ Notched — Lower dovetail |
| CGX-L 1100 SCT | CGX-L | FP359 | 11″ Notched — Lower dovetail |
| CGX-L 1100 EdgeHD | CGX-L | FP359 | 11″ Notched — Lower dovetail |
| CGX-L 1100 RASA V2 | CGX-L | FP359 | 11″ Notched — Lower dovetail |
| CGX-L 1400 SCT | CGX-L | FP362 | Celestron 14″ — Lower dovetail |
| CGX-L 1400 EdgeHD | CGX-L | FP362 | Celestron 14″ — Lower dovetail |
| Celestron CGEM II Series | |||
| CGEM II 700 Maksutov | CGEM II | No FP SKU — coverage gap | — |
| CGEM II 800 SCT | CGEM II | FP351 | 8″ Notched — Lower dovetail |
| CGEM II 800 EdgeHD | CGEM II | FP351 | 8″ Notched — Lower dovetail |
| CGEM II 8″ RASA | CGEM II | FP351 | 8″ Notched — Lower dovetail |
| CGEM II 925 SCT | CGEM II | FP355 | 9.25″ Notched — Lower dovetail |
| CGEM II 925 EdgeHD | CGEM II | FP355 | 9.25″ Notched — Lower dovetail |
| CGEM II 1100 SCT | CGEM II | FP359 | 11″ Notched — Lower dovetail |
| CGEM II 1100 EdgeHD | CGEM II | FP359 | 11″ Notched — Lower dovetail |
| Celestron CPC GPS & CPC EdgeHD Series | |||
| CPC 800 GPS SCT | CPC GPS | FP350 | Celestron 8″ — No notch |
| CPC Deluxe 800 EdgeHD | CPC EdgeHD | FP350 | Celestron 8″ — No notch |
| CPC 925 GPS SCT | CPC GPS | FP354 | Celestron 9.25″ — No notch |
| CPC Deluxe 925 EdgeHD | CPC EdgeHD | FP354 | Celestron 9.25″ — No notch |
| CPC 1100 GPS SCT | CPC GPS | FP358 | Celestron 11″ — No notch |
| CPC Deluxe 1100 EdgeHD | CPC EdgeHD | FP358 | Celestron 11″ — No notch |
| Meade Telescopes | |||
| Meade ETX 90 SCT | Meade ETX | FP342 | Meade ETX 90 — No notch |
| Meade 8″ SCT | Meade LX | FP350 | 8″ SCT — No notch |
| Meade 10″ SCT | Meade LX | FP369 | Meade 10″ — No notch |
| Meade 10″ SCT (Notched) | Meade LX | FP370 | Meade 10″ Notched — Side bar notch |
| Meade 12″ SCT | Meade LX | FP373 | Meade 12″ — No notch |
| Meade 14″ SCT | Meade LX | FP376 | Meade 14″ — No notch |
| Meade 16″ SCT | Meade LX | FP380 | Meade 16″ — No notch |
| Orion Telescopes | |||
| Orion Starseeker 127 Mak | Orion | FP338 | Orion 127 Mak — No notch |
| Orion Starseeker 150 Mak | Orion | FP343 | Orion 150 Mak — No notch |
| Orion 180 Mak | Orion | FP344 | Orion 180 Mak — No notch |
| Orion 190 Mak-Newt | Orion | FP345 | Orion 190 Mak-Newt — No notch |
Understanding Dew Shield Notch Types
One of the most common sources of confusion when choosing a dew shield is whether you need a notched or un-notched version. The answer depends entirely on your mount and how the optical tube attaches to it.
No Notch (Smooth Cylinder)
If your telescope sits on a fork mount — like the Celestron CPC series or Meade LX200 — the optical tube is held between two fork arms with no protruding dovetail bar at the front. A smooth, un-notched dew shield slides right over the tube end without interference.
Side Bar Notch
Some telescopes on the NexStar SE (8SE), NexStar Evolution, and Advanced VX mounts use a Vixen-style (narrow) dovetail bar that runs along the side of the tube and extends past the front of the corrector plate. A side bar notch provides clearance for this bar so the shield seats flush. Not every model in these series requires a notch — check the table above for your specific telescope.
Lower Dovetail Notch
The CGX, CGX-L, and CGEM II mounts use a wider CGE-style dovetail plate on the bottom of the tube. These scopes need a shield with a notch cut into the bottom edge to accommodate the dovetail saddle when the shield is fully seated.
Dew Prevention for Astronomers: A Practical Guide
Dew is the single biggest session-killer in amateur astronomy. It forms when the temperature of a surface drops below the dew point of the surrounding air. Telescope optics — especially the thin corrector plates on Schmidt-Cassegrain telescopes — are highly susceptible because they radiate heat into the cold sky much faster than they absorb it from the surrounding air.
Observers in humid regions like the Pacific Northwest, Florida, the Gulf Coast, and the Great Lakes region often deal with dew within the first hour of setup. Even in drier climates like the Sacramento Valley and Sierra Nevada foothills, dew can form on clear nights when temperatures drop sharply after sunset.
The most effective dew prevention strategy starts with a properly fitted dew shield to slow radiative cooling from the front optic. By extending the tube length, a shield creates a pocket of still air in front of the corrector plate or objective lens, significantly reducing the rate of heat loss to the night sky.