Discount Codes Eligible

ADM D Series 7" Universal Dovetail Bar 3.5" Spacing The ADM D Series 7" Universal Dovetail Bar 3.5" Spacing fits D Series saddles and accessories. ...

ADM D Series 15" Universal Dovetail Bar for Takahashi The ADM D Series 15" Universal Dovetail Bar for Takahashi fits D Series saddles and Takahashi...

ADM D Series 11" Universal Dovetail Bar 2" Spacing The ADM D Series 11" Universal Dovetail Bar 2" Spacing fits D Series saddles and accessories. Ca...

ADM D Series 11" Universal Dovetail Bar for Takahashi The ADM D Series 11" Universal Dovetail Bar for Takahashi fits D Series saddles and Takahashi...

ADM D Series 11" Universal Dovetail Bar 3.5" Spacing The ADM D Series 11" Universal Dovetail Bar 3.5" Spacing fits D Series saddles and accessories...

ADM D Series 15" Universal Dovetail Bar 60mm Spacing The ADM D Series 15" Universal Dovetail Bar 60mm Spacing fits D Series saddles and accessories...

ADM D Series 31" Universal Dovetail Bar 3.5" Spacing The ADM D Series 31" Universal Dovetail Bar 3.5" Spacing fits D Series saddles and accessories...

ADM D Series 21" Universal Dovetail Bar 2" Spacing The ADM D Series 21" Universal Dovetail Bar 2" Spacing fits D Series saddles and accessories. Ca...

ADM D Series 21" Universal Dovetail Bar 60mm Spacing The ADM D Series 21" Universal Dovetail Bar 60mm Spacing fits D Series saddles and accessories...

ADM D Series 31" Universal Dovetail Bar 60mm Spacing The ADM D Series 31" Universal Dovetail Bar 60mm Spacing fits D Series saddles and accessories...

ADM D Series 21" Universal Dovetail Bar 3.5" Spacing The ADM D Series 21" Universal Dovetail Bar 3.5" Spacing fits D Series saddles and accessories...

ADM D Series Universal Dovetail Bar for Large Takahashi The ADM D Series Universal Dovetail Bar for Takahashi TOA/FS/E-180 is designed specifically...

ADM D Series Universal Dovetail Bar for Takahashi FRC300, BRC300, M250S, M300 The ADM D Series Universal Dovetail Bar for Takahashi is designed spe...

Optec TCF-Leo Low-Profile Focuser Optec engineers have developed a new, low profile, yet extremely robust 3-inch focuser for telescope installation...

Chroma Clear Filter The Chroma Clear Filter has an average transmission greater or equal to 97% across the 380-1000nm range. Chroma Technology is a...

Chroma Bessel UBVRI Individual Filters The Chroma Bessel UBVRI Filters are made for photometric imaging in five different bandpass. They are availa...

Chroma LRGB Individual Filters You have the option to buy Chroma LRGB filters individually. The Lum, Red, Green & Blue filters are also availab...

Optec-DSI 3.5" Telescope Spacers High Performance 3.5″ Threaded Extension Rings Rich Simons of Deep Sky Instruments and Optec have jointly develope...

Optec Gemini Focusing Rotator Optec Gemini Focusing Rotator New Design Concept: Optec engineers have developed a completely new concept for combin...

Chroma Bessel UBVRI Filter Set U-Bessel: UV photometric filter in UVBRI seriesV-Bessel: Green (Visible) photometric filter in UVBRI seriesB-Bessel:...

Chroma HaLRGB Filter Set The Chroma HaLRGB Filter Set includes five individual filters: 8nm H-alpha, luminance, red, green and blue. They are avail...

Chroma 8nm OIII Filter The Chroma 8nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

Chroma 5nm OIII Filter The Chroma 5nm OIII Filter isolates the 500.7nm primary emission line of doubly ionized oxygen. After H-alpha, this is the n...

Chroma 8nm SII Filter The Chroma 8nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

Chroma 5nm SII Filter The Chroma 5nm SII Filter isolates the spectral emission of singly ionized sulfur atoms, also common in nebulae. Emission is ...

Chroma 5nm H-beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

Chroma 3nm H-Beta Filter H-beta filters are also useful for imaging nebulae and objects rich in ionized hydrogen. At 486.1nm, a narrow-band filter...

Chroma 8nm H-alpha Filter The Chroma 8nm H-alpha Filter is essential for imaging nebulae and other objects which are rich in ionized hydrogen. At 6...