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Explore Scientific Moon Crater Map (2-Sided) Save 13% Save %
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Explore Scientific Moon Crater Map (2-Sided)

2-Sided Lunar Reference Map Side 1: Pinpoints Key Observable Features Side 2: Marks Historic Spacecraft Landing Sites Designed as a Companion for ...

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Explore Scientific Nebula Filter CLS - 1.25" & 2"

City Light Suppression (CLS) Filter Enhances Contrast for Deep-Sky Objects Available in 1.25" and 2" Sizes Ideal for Viewing Nebulae and Galaxies ...

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Explore Scientific Nebula Filter CLS - 2.0" - Discontinued

2.0" City Light Suppression (CLS) Filter Enhances Contrast for Deep-Sky Objects Darkens Sky Background in Light-Polluted Areas Threads into Standa...

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Explore Scientific Nebula Filter H-Alpha 1.25-inch 12nm Save 20% Save %
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Explore Scientific Nebula Filter H-Alpha 1.25-inch 12nm

Targets Hydrogen-Alpha emission nebulae 12nm bandpass for astrophotography 1.25-inch standard filter size Drastically improves contrast under ligh...

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Explore Scientific Nebula Filter H-Alpha 2-inch 12nm
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Explore Scientific Nebula Filter H-Alpha 2-inch 12nm

Isolates the Hydrogen-alpha emission line at a 12nm bandpass Standard 2-inch filter format for modern focusers and filter wheels Dramatically incr...

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Explore Scientific Nebula Filter H-Alpha 2-inch 7nm
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Explore Scientific Nebula Filter H-Alpha 2-inch 7nm

7nm H-Alpha Bandpass 2-inch Filter Format Isolates Hydrogen Emission Nebulae Blocks Urban Light Pollution Includes Individual Test Report Descr...

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Explore Scientific Nebula Filter H-Beta - 1.25" - Discontinued

1.25" Diameter Filter Cell Isolates Hydrogen-Beta (H-Beta) Emission Line Dramatically Increases Contrast on Specific Nebulae Blocks Light Pollutio...

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Explore Scientific Nebula Filter H-Beta - 2.0"

2.0-inch Barrel Size Isolates Hydrogen-Beta (H-Beta) Emission Line Dramatically Increases Contrast on Specific Nebulae Blocks Artificial Light Pol...

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Explore Scientific Nebula Filter Oxygen III - 1.25" - Discontinued

1.25" Barrel Size Oxygen III (OIII) Line Filter High-Contrast Visual Observing Ideal for Planetary Nebulae & Supernova Remnants Fits Standard ...

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Explore Scientific Nebula Filter Oxygen III - 2.0" - Discontinued

Oxygen III (OIII) Nebula Filter 2.0" Barrel Size Isolates Two Doubly-Ionized Oxygen Emission Lines Maximizes Contrast on Emission Nebulae Blocks B...

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Explore Scientific Nebula Filter S-II 1.25-inch 12nm
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Explore Scientific Nebula Filter S-II 1.25-inch 12nm

Isolates the ionized sulfur (S-II) emission line at 672nm Features a 12nm bandpass to increase contrast Standard 1.25-inch filter format Ideal for...

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Explore Scientific Nebula Filter S-II 1.25-inch 6.5nm
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Explore Scientific Nebula Filter S-II 1.25-inch 6.5nm

Isolates the ionized sulfur (S-II) emission line at 672nm Ultra-narrow 6.5nm bandpass for maximum contrast Standard 1.25-inch barrel size fits mos...

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Explore Scientific Nebula Filter S-II 2-inch 12nm
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Explore Scientific Nebula Filter S-II 2-inch 12nm

Isolates the 672nm Sulfur-II (S-II) emission line 12nm bandpass for high-contrast views 2-inch filter size with standard threads Blocks light poll...

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Explore Scientific Nebula Filter S-II 2-inch 6.5nm
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Explore Scientific Nebula Filter S-II 2-inch 6.5nm

6.5nm Narrow Bandpass Targets the 672nm Ionized Sulfur (S-II) Emission Line 2-inch Barrel Diameter for Larger Focusers Drastically Increases Contr...

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Explore Scientific Nebula Filter UHC - 1.25" - Discontinued

UHC (Ultra-High Contrast) Narrow-Band Design Standard 1.25" Filter Threading Maximizes Contrast on Emission and Planetary Nebulae Aggressively Blo...

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Explore Scientific Nebula Filter UHC - 2.0" - Discontinued

Ultra-High Contrast (UHC) Narrow-Band Filter Designed for Two-Inch Eyepieces and Filter Wheels Significantly Reduces Artificial Light and Airglow ...

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Explore Scientific Neutral Density Filter ND 0.9 - 1.25"

ND 0.9 Optical Density 1.25" Barrel Diameter Reduces Glare for Lunar Observing Aids in Splitting Unequal Double Stars Uniform Light Transmission A...

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Explore Scientific Neutral Density Filter ND 0.9 - 2" - Discontinued

ND 0.9 Optical Density 12.5% Light Transmission 2-inch Barrel Size Neutral Color Transmission Reduces Glare on Lunar Surfaces Description FAQ S...

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Explore Scientific Rack and Pinion Focuser 2" Extension Tube

Adds Critical Outward Focuser Travel Designed for Explore Scientific ED APO Telescopes Compatible with 2-inch Rack and Pinion Focusers Descript...

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Explore Scientific Rack and Pinion Focuser 2.5" Extension Tube

Adds 1.5 inches of extension Designed for Explore Scientific 2.5-inch Hexagonal Focusers Maintains rigidity of the optical train Enables focus wit...

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Explore Scientific Rack and Pinion Focuser Half-Inch Extension Tube

Adds half an inch (12.7 mm) of focuser back travel Designed for Explore Scientific 2-inch Rack & Pinion Focusers Compatible with Explore Scien...

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Explore Scientific ReflexSight
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Explore Scientific ReflexSight

Zero-power reflex sight for intuitive aiming Multi-dot reticle with 4.0°, 2.0°, and 0.5° circles Fits standard mini-Vixen style dovetail bases Int...

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Explore Scientific Replacement Illuminator for Polar Finder EXOS2/EXOS2GT
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Explore Scientific Replacement Illuminator for Polar Finder EXOS2/EXOS2GT

Deep Red LED Illumination Variable Brightness Control Fits Explore Scientific 50mm Reticle Finder Scopes Compatible with EXOS2 & EXOS2GT Mount...

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Explore Scientific Right Ascension Drive for EQ3 Mounts

Adds automatic Right Ascension tracking to manual mounts Keeps celestial objects centered in the eyepiece Ideal for high-magnification planetary a...

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