100
Orion 2" Orion Oxygen-III Nebula Eyepiece Filter
$34.00 3 Bids 2d 7h
Lumicon 2" Deep Sky Telescope Filter - LF3015
$99.00 Buy It Now 24d 7h
Pre-owned Orion 5656 2-Inch UltraBlock Filter SCT, Narrowband, Eyepiece Filter
$14.50 2 Bids 9d 4h
Telescope - "Filters for Astronomy" with (1.25") Oculars - Quantity (12) Colors
$64.00 Buy It Now 29d 8h
1.25" Eyepiece Filter Set Colored Planetary+Moon Filter Kit for Telescope hot
$28.99 Buy It Now or Best Offer 2d 10h
Astronomik CLS T2 Light Pollution Filter with T Threads
$69.95 Buy It Now 15d 20h
Celestron 93973 SkyQ Link 2 Wi-Fi Module (Black)
$157.95$97.88 Buy It Now 4d 4h
Vintage Filter For 2" Eyepiece Unbranded
$49.99 Buy It Now or Best Offer 22d 3h
Garrett Optical 2" Nebula Telescope Filter
$49.95 Buy It Now 24d 23h
Celestron "Eyepiece Accessory Kit" Oculars - Filters - LED Light + Case #94303
$119.00 Buy It Now 27d 5h
Orion 1.25-Inch UltraBlock Filter
$75.00 Buy It Now or Best Offer 6d 6h
Celestron 94126A LPR Light Pollution Reduction Filter 1.25"
$49.98 Buy It Now 15d 10h
Celestron #94306 PowerSeeker Accessory Eyepiece & Filter Kit
$42.99 Buy It Now 29d 23h
Lumicon Ultra High Contrast UHC Filter - 2" # LF3030
$200.00 Buy It Now 29d 7h
Baader Planetarium 1.25" Solar Continuum Filter # FSOL-1 2458390
$100.00 Buy It Now 23d 5h
Celestron O3 narrowband filter 1.25" telescope part
$65.00 0 Bids or Best Offer 1d 9h
SOLAR FILTER Telescope fits Meade ETX 125 SCOPETRONIX STSF125 ASTRONOMY VIEW
$150.00 Buy It Now or Best Offer 7d 10h
Optolong Ultra High Contrast L-Pro Nebula Filter - 2"
$185.00 Buy It Now 10d 0h
Lumicon 2" Deep-Sky Filter - Life time warranty by OEM
$165.00 Buy It Now 2d 8h
Meade "Magellan 1" for Dobsonians (Digital Readout) #02010
$249.00 Buy It Now 19d 5h
Orion 1.25" V-Block Telescope Filter In Case
$36.99 Buy It Now 2d 1h
Celestron Mars filter 1.25" telescope part
$35.00 0 Bids or Best Offer 6d 8h
Celestron - Ultima PEC 8 Telescope "Drive Base & Hand Controller" (Vintage)
$259.00 Buy It Now 19d 8h
eyepiece unbranded....fixed multi elements
$29.00 0 Bids 5d 1h
Astronomik CLS Nikon XL Clip-filter
$185.00 Buy It Now or Best Offer 12d 3h
Bausch & Lomb Criterion - "Guiding Ocular" 9 mm (1.25") (Vintage - Rare)
$49.00 Buy It Now 19d 3h
Celestron - Classic C8 with Wedge - Tripod - Carry Case + (Vintage Quality)
$695.00 Buy It Now 19d 6h
ZWO 1.25" LRGB Imaging Filter Set # LRGBSET1
$89.00 Buy It Now 8d 14h
Orion Skyglow UltraBlock Filter Telescope SCT mount Eyepiece Filter
$88.00 Buy It Now 26d 10h
OIII-CCD 12nm (Bandpass Photo Filter) 2”
$184.00 Buy It Now 3d 0h
Meade GLASS WHITE-LIGHT SOLAR FILTER #1375
$182.00 Buy It Now 6d 11h
Unitron - "Dealer Posters" 16" X 21" Set of (2) - (Vintage)
$69.00 Buy It Now 28d 4h
Orion - 5-Position Filter Wheel For 1.25"
$129.00 Buy It Now or Best Offer 5d 22h
Celestron / Vixen Japan 1.25" Varible Polarizing Filter For Telescope Eyepiece
$39.99 Buy It Now 23d 22h
Orion 5584 2-Inch Hydrogen-Beta Eyepiece Filter
$140.00 Buy It Now or Best Offer 5d 7h
Optolong Ultra High Contrast UHC Nebula Filter - 2"
$80.00 Buy It Now 10d 0h
Set Of 3 .965" Telescope Filters, Red, Green & Polarizer
$29.99 Buy It Now 5d 1h
Meade - Drive Base & Fork Tines + Dec - R/A Controls (9V DC) for ETX 90M
$69.00 Buy It Now 9d 5h
Optolong UV / IR Cut Filter - 2"
$66.50 Buy It Now 18d 13h
Bausch & Lomb - 26 mm Professional Plossl Ocular 1.25" (Vintage - Classic)
$42.00 Buy It Now 6d 20h
Chromium Solar Film ST1250CBP1
$186.95 Buy It Now 20d 2h
Antlia V-Series LRGB Imaging Filter Set - 1.25" Mounted
$200.00 Buy It Now 28d 6h
SVBONY 2" LRGB Imaging Filters kit for Deepsky & Planetary CNC Imaging better
$179.99 Buy It Now or Best Offer 27d 15h
Solar Viewing Binoculars (Red). View the transit of Mercury and Solar Eclipse
$129.00 Buy It Now 24d 2h
Celestron - Installation Kit for Advanced Astromaster - G9 & G11 Eq. Mounts
$129.00 Buy It Now 19d 5h
Optolong City Light Supression / Light Pollution Reduction CLS Filter - 1.25"
$56.00 Buy It Now 30d 5h
Explore Scientific O-III Nebula Filter - 2" # 310200
$103.99 Buy It Now 8d 14h
6 celestron orion 1.25-Inch Filters
$39.99 Buy It Now or Best Offer 6d 6h
Explore Scientific H-Beta Narrowband Filter - 2" # 310230
$135.99 Buy It Now 10d 4h
UHC (Ultra High Contrast) 2”
$90.00 Buy It Now 3d 0h
Lumicon Oxygen III Filter - 2" # LF3045
$200.00 Buy It Now 10d 2h
Optolong Ultra High Contrast UHC Nebula Filter - 1.25"
$52.00 Buy It Now 11d 2h
Kendrick 5" / 125ETX Solar Filter - Fits OD 140-150mm
$60.00 Buy It Now or Best Offer 4d 8h
Celestron - "Installation Kit" for Advanced Astromaster - Super Polaris Mts.
$59.00 Buy It Now 29d 10h
Lumicon Hydrogen-Beta Filter - 1.25" # LF3055
$107.00 Buy It Now 10d 3h
Chromium Solar Film ST1150CBP1
$156.95 Buy It Now 20d 2h
Lumicon Deep Sky Filter - 1.25" # LF3010
$107.00 Buy It Now 8d 12h
Lumicon Oxygen III Filter - 1.25" # LF3040
$100.00 Buy It Now 10d 2h
Astronomik OIII Filter, 13nm Bandpass, 2"
$225.00 Buy It Now or Best Offer 24d 5h
Antlia V-Series LRGB Imaging Filter Set - 36mm Unmounted
$300.00 Buy It Now 28d 6h
Solar Film Filter 67mm
$55.95 Buy It Now 24d 3h
Lumicon Comet Filter - 1.25" # LF3070
$102.00 Buy It Now 29d 7h
Optolong Venus & Ultraviolet Venus-U Filter - 2"
$259.00 Buy It Now 8d 14h
Optolong Oxygen III / O-III Narrowband (25nm) Nebula Filter - 2"
$110.00 Buy It Now 8d 14h
Explore Scientific CLS City Light Supression Filter - 1.25" # 310225
$79.99 Buy It Now 14d 6h
Carl Zeiss - Microscope with Stereo Binoculars (4) Turret + Double Stage Focus
$595.00 Buy It Now 18d 8h
Celestron - Nebular / Deep Sky Filter for 2" (48 mm) Oculars
$40.00 Buy It Now 3d 18h
Optolong City Light Supression / Light Pollution Reduction CLS Filter - Clip ...
$115.00 Buy It Now 8d 14h
SVBONY Narrowband H-Beta Telescope Filter Enhance Contrast of Nebulae Observe
$54.99 Buy It Now or Best Offer 15h 16m
Antlia 3.5nm Narrowband Oxygen III (OIII) Imaging Filter - 1.25" Mounted
$209.00 Buy It Now 28d 6h
Antlia 3.5nm Narrowband H-Alpha (Ha) Imaging Filter - 2" Mounted
$319.00 Buy It Now 11d 2h
Optolong LRGB Imaging Filter Set - 1.25"
$254.00 Buy It Now 24d 4h
H-Beta 12nm (Broadband Filter) 2”
$150.00 Buy It Now 3d 0h
Explore Scientific O-III Nebula Filter - 1.25" # 310205
$79.99 Buy It Now 6d 5h
Meade 07286 No.905 1.25-Inch Variable Polarizing Filter (Black)
$49.99 Buy It Now 12d 11h
Lpb Astronomy Light Pollution Blocker Filter 28Mm, For Brandon Eyepieces?
$24.99 Buy It Now 16d 1h
Baader Planetarium 1.25" Semi-APO Filter # FSAPO-1 2458398
$94.00 Buy It Now 8d 12h
Bausch & Lomb Criterion - 12.7 mm Sym. Plossl Ocular 1.25" (Vintage - Classic)
$42.00 Buy It Now 1d 21h
Lumicon Minus Violet Filter - 2" # LF3125
$82.00 Buy It Now 8d 12h
C8 Glass and Metal White Light Solar Filter with Padded Hard Case
$79.95 Buy It Now 25d 21h
Antlia 3.5nm Narrowband Oxygen III (OIII) Imaging Filter - 36mm Unmounted
$269.00 Buy It Now 28d 6h
Optolong Hydrogen Beta Narrowband (25nm) Filter - 2"
$142.00 Buy It Now 8d 14h
Lumicon Minus Violet Filter - 1.25" # LF3120
$62.00 Buy It Now 30d 5h
Moon&Skyglow Filter 1.25”
$39.00 Buy It Now 25d 2h
Meade Color Filter Set
$30.00 Buy It Now or Best Offer 3d 4hLumicon Infrared Blocking Filter - 1.25" # LF3140
$194.00 Buy It Now 8d 12h
Baader LRGB Anti-Reflection Filter Set - 2" # FLRGB-2 2458477
$619.00 Buy It Now 23d 1h
Celestron International Solar Filter #94135 F80's & F70's
$40.00 Buy It Now or Best Offer 6d 5h
Celestron EclipSmart Solar Filter for Celestron 8" Schmidt-Cassegrain Telescopes
$74.95$46.99 Buy It Now 24d 19h
Antlia 3.5nm Narrowband Sulfur II (SII) Imaging Filter - 36mm Unmounted
$269.00 Buy It Now 28d 6h
Antlia 3.5nm Narrowband H-Alpha (Ha) Imaging Filter - 36mm Unmounted
$269.00 Buy It Now 28d 6h
Glass Solar Filter ST1200G
$179.95 Buy It Now 6d 23h
ZWO 2" IR Cut Filter for Astronomical Imaging # IRCUT2
$50.00 Buy It Now 8d 14h
Baader 2" Cool Ceramic Safety Herschel Prism - Photo # HERSCH-P 2956500P
$485.00 Buy It Now or Best Offer 11d 4h
Solar Film Filter 77mm
$69.95 Buy It Now 12d 6h
Glass Solar Filter ST650G
$126.95 Buy It Now 5d 21h
Gosky 5-position 1.25inch Manual Filter Wheel
$55.99 Buy It Now 24d 10hLumicon Comet Filter - 2" # LF3075
$208.00 Buy It Now 8d 12h
Solar Film Filter 58mm
$52.95 Buy It Now 6d 1hGSO IR Blocking / IR Cut Filter for Astronomy Imaging - 2"
$46.00 Buy It Now 8d 14h