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Astrozap AZ-1573 Glass Solar Filter - Binocular - 60mm-67mm
Pair of glass solar filters for binoculars. 60mm-67mm, 2-3/8 to 2-5/8 diameter.
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AZ-1573 Glass Solar Filter - Binocular - 60mm-67mm
$149.00
Astrozap Astrozap AZ-1516 Glass Solar Filter - FA - 143mm-149mm (ETX125)
Full Aperture Glass Solar Filter 143mm-149mm 5-5/8 to 5-7/8 diameter
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Astrozap AZ-1516 Glass Solar Filter - FA - 143mm-149mm (ETX125)
$136.95
Astrozap Astrozap AZ-1513 Glass Solar Filter - FA - 117mm-124mm (C4/ETX105)
Full Aperture Glass Solar Filter 117mm-124mm 4-5/8 to 4-7/8 diameter
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Astrozap AZ-1513 Glass Solar Filter - FA - 117mm-124mm (C4/ETX105)
$117.95
DayStar DayStar 2 Inch Eyepiece Holder for Quark Prominence and Quark Chromosphere
With the Daystar Filters' 2" Eyepiece Holder installed on your Quark solar filter you are able to use larger eyepieces and enjoy larger fields of view
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DayStar 2 Inch Eyepiece Holder for Quark Prominence and Quark Chromosphere
$65.00
DayStar Daystar Instruments Questar QUARK*
This new, All-In-One design marries high quality components of a telecentric barlow, adapters, snouts and Daystar hydrogen alpha filter into one simple assembly.
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Daystar Instruments Questar QUARK*
$1,295.00
DayStar Daystar Calcium H-Line Quark Filter
The Calcium Quark brings quick, easy fun of the Original Quark to Calcium H-Line.
For use on refractors of F/7 or longer focal ratio refractors.
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Daystar Calcium H-Line Quark Filter
$1,295.00
DayStar Daystar Instruments QUARK* Sodium D-Line Filter
Due to popular demand for high resolution, narrow bandpass sunspot imaging, we are proud to offer the new Sodium D-Line Quark filter.
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Daystar Instruments QUARK* Sodium D-Line Filter
$1,195.00
DayStar Daystar Instruments QUARK* Hydrogen Alpha "Eyepiece"
This new, All-In-One design marries high quality components of a telecentric barlow, adapters, snouts and Daystar hydrogen alpha filter into one simple assembly.
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Daystar Instruments QUARK* Hydrogen Alpha "Eyepiece"
$1,295.00
DayStar Daystar Energy Rejection Filter - glass, cell and cap - Specify dimensions
Energy Rejection Filter for Hydrogen Alpha solar filter. Specify dimensions below.
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Daystar Energy Rejection Filter - glass, cell and cap - Specify dimensions
$250.00
DayStar Daystar 2" UV/IR Filter
Designed to help protect sensitive equipment from heat and radiation during solar observation sessions
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Daystar 2" UV/IR Filter
$125.00
Arcturus Arcturus Moon Filter 2
The Arcturus 2" Neutral Density 13 (ND13), transmits 13% of all incident light, while blocking 87%.
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Arcturus Moon Filter 2
$39.95
Arcturus Moon Filter 1.25
Arcturus' Moon filter reduces glare so you can see more lunar detail and surface features
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Moon Filter 1.25
$15.00
Arcturus Variable Polarizing Filter 2 Inch
This 2" Variable Polarizing Filter, is the all-phase lunar filter for large telescopes. Transmittance is continuously variable from about 5% to 35%.
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Variable Polarizing Filter 2 Inch
$49.95
Celestron Celestron UHC/LPR Filter - 1.25 in
Improved transmission translates to maximum image brightness and contrast!
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Celestron UHC/LPR Filter - 1.25 in
$89.95
Celestron Celestron Oxygen III Narrowband Filter - 1.25 in
The 1-1/4" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm lines) emitted by planetary and emission nebulae, while blocking the rest of the overall spectrum of light.
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Celestron Oxygen III Narrowband Filter - 1.25 in
$89.95
Arcturus Arcturus NBPF Narrowband Hydrogen-Alpha 12nm Filter 1.25 (LIMITED QUANTITIES)
Get Great Nebula Images Under City Lights or a Full Moon with the Arcturus Hydrogen-Alpha Narrowband Astrophotography Filter!
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Arcturus NBPF Narrowband Hydrogen-Alpha 12nm Filter 1.25 (LIMITED QUANTITIES)
$59.95
Arcturus Arcturus Hydrogen-Beta Filter 2"
A Hydrogen-Beta telescope filter may be the only way to see the faint and elusive Horsehead, California, and Cocoon Nebulas.
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Arcturus Hydrogen-Beta Filter 2"
$99.95
Arcturus Arcturus Hydrogen-Beta Filter 1.25 (LIMITED QUANTITIES)
A Hydrogen-Beta telescope filter may be the only way to see the faint and elusive Horsehead, California, and Cocoon Nebulas.
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Arcturus Hydrogen-Beta Filter 1.25 (LIMITED QUANTITIES)
$59.95
Baader Planetarium Baader Moon & Skyglow Planetary Contrast (Neodymium) filter (SPECIFY SIZE)
Baader Moon & Skyglow Planetary Contrast (Neodymium) filter (SPECIFY SIZE)
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Baader Moon & Skyglow Planetary Contrast (Neodymium) filter (SPECIFY SIZE)
$92.00
Baader Planetarium Baader Planetarium Premium Colored Filters
Not just another colored filter.
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Baader Planetarium Premium Colored Filters
$53.00
Baader Planetarium Baader Narrowband 8nm S-II Filter
CCD imagers will find Baader's Premium Narrowband CCD passfilters to deliver the absolute highest contrast deep sky images in H-Alpha, H-Beta, Oxygen III, and Sulfur-II, with the shortest exposures possible.
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Baader Narrowband 8nm S-II Filter
$149.00
Baader Planetarium Baader Ultra-Narrowband H-alpha 3.5nm Filter (Specify Size)
Precision grade enforced H-alpha filter for f/10 to f/3.5 optical systems
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Baader Ultra-Narrowband H-alpha 3.5nm Filter (Specify Size)
$297.00
Baader Planetarium Baader Astro Conversion Filter for CANON EOS 300D
This filter is intended for amateurs that are comfortable replacing their camera's stock filter.
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Baader Astro Conversion Filter for CANON EOS 300D
$99.00
Baader Planetarium Baader UHC-S / Nebula Filter (Specify Size)
The Baader Planetarium UHC-S Nebula filter excels at delivering a high-contrast and natural view of emission nebula - without excessive dimming and loss of background star fields.
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Baader UHC-S / Nebula Filter (Specify Size)
$89.00