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Eyepieces, Barlows, Filters, Star Diagonals, Adapters, Collimators, OTAs, & accessories for the Observer.




UNIHEDRON SQM--WIDE FIELD VERSION Howie Glatter Laser Collimator--2" 635nm
UNIHEDRON SKY QUALITY METER (SQM)--WIDE FIELD VERSION
Usually Ships in 24 Hours
List Price: $149.99
Our Price: $119.99
Savings: $30.00
1 in stock!
NEXUS DSC ADVANCED DIGITAL SETTING CIRCLES--WIFI HEAD UNIT, MICRO SD CARD, CHARGER
Usually Ships in 24 Hours
List Price: $647.95
Our Price: $404.99
Savings: $242.96
5 in stock!
Howie Glatter Laser Collimator--2" 635nm
Usually Ships in 24 Hours
List Price: $245.00
Our Price: $175.00
Savings: $70.00
2 in stock!
An accurate meter for measuring sky brightness for astronomers in magnitude per square arc-second, the "Sky Quality Meter" has superb sensitivity in a handheld meter! Wide 80° field. NEXUS DSC ADVANCED DIGITAL SETTING CIRCLES--WIFI HEAD UNIT, MICRO SD CARD, charger. Advanced digital setting circles computer--packs all the latest technologies into a state-of-the-art device. Encoders, wiring, and attachment hardware not included. Howie Glatter Laser Collimator--2" 635nm
Best for daytime or twilight use--brighter, more orange beam is more visible in daytime.
ASTROSYSTEMS LIGHT PIPE 1.25"
ASTROSYSTEMS LIGHT PIPE SIGHT TUBE/CHESHIRE COMBO COLLIMATION TOOL--1.25"
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List Price: $79.99
Our Price: $49.99
Savings: $30.00
2 in stock!
TELRAD REFLEX SIGHT W/MOUNTING BASE + BULLSEYE RETICLE
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List Price: $56.00
Our Price: $40.00
Savings: $16.00
3 in stock!
VIXEN SSW 5MM 7-ELEMENT 83° ULTRAWIDE EYEPIECE-1.25"
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List Price: $490.00
Our Price: $349.99
$50 Instant Rebate 4/1-7/30 $299.99
Savings: $190.01
2 in stock!
ASTROSYSTEMS LIGHT PIPE SIGHT TUBE/CHESHIRE COMBO COLLIMATION TOOL--1.25". A SINGLE AFFORDABLE TOOL TO COLLIMATE BOTH MIRRORS. TELRAD REFLEX SIGHT W/MOUNTING BASE.  CALIBRATED BULLSEYE OF 4°/2°/0.5° CIRCLE SIZE.  LONG BATTERY LIFE (TWO AA). ADDITIONAL BASES AVAILABLE FOR OTHER SCOPES. 5mm Vixen SSW Ultra Wide 83° 7 element eyepiece, Lanthanum and tantalum glass, Japanese made, Full multi-coatings, even on cemented surfaces, work with fast f/4.0 optics.
TELEVUE ETHOS, 2"/1.25", 9-ELEMENT, 13MM, 100 DEGREES EXPLORE SCIENTIFIC 68° SERIES 16MM WATERPROOF Ar EYEPIECE-1.25" EXPLORE SCIENTIFIC 82° SERIES 24MM WATERPROOF Ar EYEPIECE--2"
TELEVUE ETHOS, 2"/1.25", 13MM, 100°
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List Price: $780.00
Our Price: $610.00
Spring Into Summer Sale $520.00
Savings: $260.00
2 in stock!
EXPLORE SCIENTIFIC 6-ELEMENT 68° SERIES 16MM WATERPROOF AR EYEPIECE-1.25"
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List Price: $333.99
Our Price: $149.99
Savings: $184.00
4 in stock!
EXPLORE SCIENTIFIC 6-ELEMENT 82° SERIES 24MM WATERPROOF Ar EYEPIECE--2"
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List Price: $667.99
Our Price: $299.99
Savings: $368.00
2 in stock!
The best 100-110° eyepieces made. Superb clarity, color-fidelity, edge-of-field sharpness, light transmission, ultra-low distortion & comfortable 15mm eye relief. Ethos eyepieces have an enormous field with superb contrast. 21 to 3.7mm focal lengths available. A wide-angle 68° eyepiece with full multi-coatings, argon-purged and waterproof, ans unsurpassed sharpness. 16mm, 1.25" And did we mention affordable? An ultrawide 82° field and argon-purged waterproof construction w/superb coatings all combine to make these the "Everyman's Series", useful on every type of object. 24mm FL
TELEVUE DELOS, 1.25", ?-ELEMENT, 4.5MM, 72 DEGREES SnapZoom Cell Phone Adapter Olivon 58° -- HD 4mm 1.25" eyepiece
TELEVUE DELOS, 4.5MM, 72°, 1.25", LONG EYE RELIEF
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List Price: $445.00
Our Price: $340.00
Spring Into Summer Sale $290.00
Savings: $155.00
1 in stock!
SnapZoom Cell Phone Adapter for Optical Instuments
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List Price: $96.00
Our Price: $69.99
Savings: $26.01
3 in stock!
Olivon 58° -- HD 4mm 1.25" 5-element eyepiece
Usually Ships in 24 Hours
List Price: $98.00
Our Price: $63.00
Savings: $35.00
2 in stock!
Delos' 72° field produces incredible sharpness from edge to edge--Perfect for all objects.  perfect for glasses wearers and non-glasses wearers because of an innovative eyecup design. SnapZoom Camera Adapter secures a smartphone to the eyepiece of any optical device for sharp, clear, close-up photos and videos without spending tons of money on a telephoto lens. Olivon 4mm HD 58 degree astronomical eyepiece for planetary and general observations
TELEVUE NAGLER TYPE 5, 2", 6-ELEMENT, 26MM, 82 DEGREES BAADER HYPERION MKIII 8-24 CLICK-STOP ZOOM #2454824--2"/1.25" BAADER CONTRAST BOOSTER FILTER-1.25" #2458360
TELEVUE NAGLER TYPE 5, 2", 6-ELEMENT, 26MM, 82°
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List Price: $785.00
Our Price: $615.00
Spring Into Summer Sale $525.00
Savings: $260.00
1 in stock!
BAADER HYPERION MKIII 8-24 CLICK-STOP ZOOM EYEPIECE #2454824--2" OR 1.25"
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List Price: $432.00
Our Price: $289.99
Savings: $142.01
2 in stock!
BAADER CONTRAST BOOSTER FILTER-1.25" #2458360
Usually Ships in 24 Hours
List Price: $116.00
Our Price: $81.99
Savings: $34.01
2 in stock!
This is a somewhat smaller, lighter and more powerful version of the celebrated 31 Nagler Type 5. Why? Because customers such as Tom Dietz, from the Smithsonian, are pests! :-) It weighs about 1.6 lbs and has a field stop diameter of 35mm. It is parfocal with the 17mm Nagler Type 4, making it a nice match in size, weight and convenience. High performance zoom eyepiece w/variable focal length 8-24mm with click stops
Hyperion Phantom Group multi-coated 42 (24mm) to 70 degree (8mm) FOV
Baader Contrast Booster Filter 1.25"
A unique filter for many different astronomical tasks – incomparable in acuity. A strong minus-violet filter for achromats, and an EXCELLENT PLANETARY FILTER.



SUPER DEALS

Lumicon Deep Sky Broadband Filter 2"

List Price: $420.99
Our Price: $299.99
Close Out $219.00
Savings: $201.99
Lumicon Deep Sky Broadband Filter 2"
Lumicon Deep Sky Broadband Filter 2"
The benchmark for broadband light pollution reduction, contrast enhancing, nebula filters


MOST RECOMMENDED

Lumicon Comet Filter-2"
Close Out $219.00
BAADER MORPHEUS 4.5mm 76° Eyepiece
Our Price: $239.99
TELEVUE ZOOM, 1.25", 3-6MM, 50 DEGREES
Spring Into Summer Sale $340.00
Howie Glatter Laser 2" TuBlug (Tube+Barlow+Plug)
Our Price: $115.00
Olivon 22mm 70° 2" 8-element FMC eyepiece
Our Price: $129.99


RECENT ARRIVALS

EXPLORE SCIENTIFIC 92° SERIES 12MM WP EYEPIECE-2"
Our Price: $499.99
Howie Glatter Parallizer 2" to 1.25" adapter
Our Price: $45.00
Olivon 2" BK7 Roof Prism Diagonal w/1.25" adapter
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BAADER BBHS 2" CLICKLOCK SILVER DIAGONAL #2456115
Our Price: $479.99
VIXEN HR 2.0MM PLANETARY EYEPIECE, 42°,1.25"
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