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Baader UBVRI Bessel B-Filter - Photometric Baader Bessel-UBVRI Bandpass Filter Set, suitable from f/15 to f/1.8 Classic photometric filters with t...

Baader T-2 / 7.5 mm Extension Tube (T-2 part #25C) 7.5mm optical path length Telescope side T-2 internal thread Focus side T-2 external thread For...

Baader Semi-APO Filter Two filters made into one for maximum brightness Combines Fringe-Killer with Moon & Skyglow for Semi-APO contrast with ...

Baader RGB-B Filter CMOS Optimized New CMOS-optimized L-RGB filters from Baader Planetarium with Reflex-Blocker™ and Life-Coat™. Now with 47.4 mm u...

Baader Focusing Eyepiece Holder 1¼" / T-2 Eyepiece 1¼ "/ T-2 internal thread, low priced version with M 4 screw (alternatively: T-2 component # 08...

Baader T2 to 1¼" ClickLock Eyepiece Clamp  with Built-in Diopter-Adjustment The Baader Planetarium Click-Lock Eyepiece Clamp (# T2-08) is a precisi...

2" BDS-RT Baader Diamond Steeltrack® Focuser Baader Planetarium's 2" Refractor Diamond Steeltrack Focuser gives refractors a full 3" (76mm) of velv...

Astronomik L-1 UV-IR Blocking Filter Astronomik now offers you a range of three different UV+IR blockers as Luminance filters. The different spectr...

Askar Color Magic 3nm Duo-Narrowband Filter For all astrophotography enthusiasts, filters are one of the indispensable accessories to achieve perfe...

Astronomik Blue Type 2c Filter Our filter set especially designed for astrophotography with CCD cameras. These filters provide a natural color repr...

Antlia IR Pass 850nm planetary 1.25" filter The Antlia IR Pass 850nm filter is an absorptive filter that allows infrared light with wavelengths of ...

Antlia CaK 3nm 393.3nm filter The Antlia Solar Wedge prism and internal CaK solar filter are made of heat resistant double-polished substrate. Antl...

ADM D Series 3.5 lbs Counterweight with 5" Threaded Rod The ADM D Series 3.5 lbs Counterweight with 5" Threaded Rod fits D Series dovetail bars and...

APM 2" Dielectric Star Diagonal with Fast Lock With 1/10 wavelength p-v, our star diagonal offers excellent surface accuracy, which results in top ...

Antares W70 31mm 72° The 2" Antares W70 31mm 72°  gives you a big view of the sky at a low price. The 6-element fully multicoated design features 7...

Antares Twist-Lock Adapter 2" To 2.25" Extension ET2TL extends any 2" accessory by 2.25" with twist-lock retainer. Works with any type of barrel: s...

Antares Speers-Waler Series4 9.1mm 86° The 1.25" Antares Speers-Waler Series4 9.1mm 86° offers a wider 86 degree AFOV than Series3 with all the sam...

Antares Roof Prism Binocular Adapter For Tripod BTARP is a really strong L-Bracket to hold your roof prism binoculars to a tripod or mounting. Made...

Antares M42 Olympus T-Ring Adapts your Olympus E camera to M42 T Thread.   In the Box Antares M42 Olympus T-Ring Warranty & Manuals Antares 1...

ZWO T2-1.25" Holder The ZWO T2-1.25" Holder allows the use of accessories with a 1.25″ barrel on a camera or any other accessory with a M42x0.75 (T...

ZWO T2 to M43 adapter T2 to M43 adapter, suitable for ASI1600 ASI294 ASI183 ASI174 series and ASI533MC-P cameras.       Connection Guide: F...

ZWO T-Mount to C-Mount Adapter The ZWO M42 to CS Adapter has female C-mount threads on the inner diameter of the ring, and male T-threads on the ou...

ZWO Soft Bag for Cooled Cameras The ZWO Soft Bag for Cooled Cameras is included in the cooled cameras box. If you want to buy extra one, place the ...

Antares M42 5mm Camera Extender Adapter T2-EXT5 extends M42 T-thread by 5mm.   In the Box Antares M42 5mm Camera Extender Adapter Warranty & ...

ZWO Methane CH4 Filter 1.25" The ZWO Methane CH4 Filter 1.25″ is a special filter for photographic use. Its FWHM is 20 nm which is suitable for mos...

Antares Camera Adapter 1.25" EP1 is a combination camera adapter for 1.25" that allows for both direct and eyepiece projection photography. Threade...

Antares 2" Adapter 1.25" Extension ET1 extends any 1.25" accessory by 2". Accepts 1.25" Filters; Side screw retainer.   1.25″x2″ extension tube wi...

Antares 2" 90° Dielectric Diagonal for SCT 2MDS-D: 2" Mirror Diagonal for Schmidt-Cassegrain thread-on with pressure band retainer and multilayer d...

Antares 1.5x 1.25" Twist-Lock Barlow Antares Twist-lock barlows make for easy eyepiece in-out and work with any barrel format. These extend focal l...

ADM D Series Dovetail Bar for Celestron 8" The ADM D Series Dovetail Bar for Celestron 8" fits all Celestron 8″ OTA’s including CPC and HD models. ...

ADM D Series 7" Universal Dovetail Bar 2" Spacing The ADM D Series 7" Universal Dovetail Bar 2" Spacing fits D Series saddles and accessories. Can ...

ADM D Series 3.5 lbs Counterweight with Side Mounting Option The ADM D Series 3.5 lbs Counterweight with Side Mounting Option fits D Series dovetai...