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William Optics Super High Precision COPPER T-Mount for Canon EOS Full Frame T-mount for EOS DSLR camera copper version. Made from high quality copp...

Pentax UP Zoom 8-16x Binoculars PENTAX quality and clarity are within reach, at a price that’s within reach, too. These compact porro-prism models ...

SVBONY SV193 2-Inch 0.8x Focal Reducer/Flattener for SV503 ED Refractor Designed specifically for SV503 70mm, 80mm, and 102mm f/7 ED Refractor.The ...

ZD 10x50 WP Binoculars What you couldn’t see before is suddenly so close you can almost touch it. PENTAX premium level quality and clarity are with...

Pentax ZD 8x43 WP Binoculars What you couldn’t see before is suddenly so close you can almost touch it. PENTAX premium level quality and clarity ar...

JUPITER Series 16x50 Binoculars Full sized binoculars that provide a bright and clear view, with a functional exterior designoptimizing ease of us...

Pentax SMC XW30-R 70° Eyepiece The Pentax SMC XW30-R 70° has a 70° Apparent Angle of View, 20mm Eye Relief, plus Weatherproof Body for Multi-Appli...

Shelyak Alpy 600 The Alpy 600 and Demetra software (developed by Shelyak Instrument for the ALPY 600 spectrograph) will allow you to produce spectr...

Pentax SMC XW3.5 70° Eyepiece The Pentax XW3.5 70° has a 70° Apparent Angle of View, 20mm Eye Relief, plus Weatherproof Body for Multi-Application...

Pentax XF 12mm Compact, Cost-efficient eyepieces for use with PF-65EDII & PF-65EDAII Spotting Scopes Features Designed for use with the PEN...

Pentax SD 10x42 WP Binoculars Exceptional vision quality meets high-end expectations. Large objective lenses incorporated in the design allow for c...

Pentax SP 16x50 Binoculars  Large objective lens elements provide maximum light gathering capabilities and are perfect for use in low light condi...

Pentax SP 10x50 WP Binoculars  Large objective lens elements provide maximum light gathering capabilities and are perfect for use in low light co...

PlaneWave .66x Reducer for CDK12.5 / CDK14 / CDK17 This is a reducer designed specifically for flat field telescopes like the CDK. This reduces the...

Lunt 16mm Flat-Field Eyepiece Significantly, Lunt 16mm flat-field eyepiece for solar telescopes are coated with 0.1% anti-reflective coatings. Nota...

Pentax AD 9x28 WP Binoculars Full-size performance in a compact-sized body. All A Series binoculars offer you impeccable viewing quality in a com...

ZWO EFW 7x50mm Square Filter Wheel  The 50mm electronic filter wheel is CNC milled from an aircraft-graded aluminum block. Quality guaranteed!   Ad...

Lunt 12mm Flat-Field Eyepiece The Lunt 12mm Flat-Field Eyepiece for solar telescopes is coated with 0.1% anti-reflective coatings. Lunt flat-field...

Walter Microscope Discovery Kit This slide making kit is a great way for children to learn about the wonders of microscopy. It has all the tools ne...

Chroma Jovian Methane Filter The Chroma Jovian Methane Filter is a methane absorption band filter. This filter enhances contrast when imaging objec...

Celestron 1.25” Dielectric Star Diagonal with Twist-Lock Ensure maximum light transmission without loss of optical quality with the Celestron Diele...

Celestron 1.25" UHC/LPR Filter Our 1-1/4" Light Pollution Reduction (LPR) Filters are designed to selectively reduce the transmission of certain wa...

Celestron 1.25" Oxygen III Narrowband Filter The 1.25" OIII narrowband filter isolates just the two doubly-ionized oxygen lines (496 and 501nm line...

Astrozap Simple D/C Adapter The AstroZap AZ-719 D/C Adapter was built specifically for those individuals that don't want to purchase a Dew Contr...

Baader Wide-T-Ring Sony E/NEX Bayonet with D52i/M48 to T-2 and S52 The Sony Alpha 7 cameras – especially the 7S and 7SII – are very interesting fo...

Baader VariLock 29, lockable T-2 ExtensionTube 20-29mm with spanner tool Lockable T-2 extension tube, adjustable 20-29 mm with clamping Telescope...

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

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

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

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-2/90° Deluxe Amici Prism with BBHS Coating T-2/90° Baader Roof-Prism. Manufactured by Zeiss standard, both sides with T-2 system threads....

Baader T-2 / 15 mm Extension Tube (T-2 part #25A) 15mm optical path length Telescope side T-2 internal thread Focus side T-2 external thread For e...

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 Red Color Filter Largest free opening of all color filters on the market to eliminate any vignetting. CNC machined "grip crown" provides ex...