Products

A red flashlight is one of the most beneficial accessories you can own as an amateur astronomer, no matter how occasional your night sky observatio...

A greatly revised and updated edition of the best-selling guidebook to stargazing The fifth edition of NightWatch: A Practical Guide to Viewing th...

The NOMAD star tracker from Move Shoot Move is a super handy portable tracking mount for shooting Milky Way photos with a DSLR or mirrorless camera...

OM3 Optical Fiber Transceivers rated for Industrial Temperature Range (-40C to +85C) – Quantity 2.

High quality optics start with each lens and/or mirror being hand selected so only the finest grade of optical glass is used StarBright XLT coatin...

  High quality optics start with each lens and/or mirror being hand selected so only the finest grade of optical glass is used StarBright XLT coat...

High quality optics start with each lens and/or mirror being hand selected so only the finest grade of optical glass is used StarBright XLT coatin...

OPEN-BOX ITEM This SCT Corrector IV is an open-box unit. Each open-box item has been inspected and verified by our engineers to be in like-new co...

Carrying case for most 8”, 9.25” or 11” Schmidt-Cassegrain or EdgeHD optical tube; along with the 8" RASA optical tube Space for carrying accesso...

Optolong H-Alpha 7nm filter is the popular narrowband filter allowing 7nm bandwidth of light centered on a wavelength of 656nm through, and reducin...

Optolong L-eXtreme F2 is a dual-band (500.7 nm and 656.28 nm, FWHM=7 nm) narrowband pass filter that meets the requirements for transmission at con...

Technical Data Schott substrate material Thickness 2.0mm Surface Quality: 60/40 (Refer to MIL-O-13830) Fine-optically polished to ensure accurate ...

Sizes 2" Mounted Specifications CWL(centre wavelength): 656.3nm Fwhm: 7nm Tpeak: <85% Coating Wavelength: 300-1100nm Optical Denisity: OD3 Su...

Narrowband H-beta filter is designed for nebula observation allowing 12nm bandwidth of light centered on a wavelength of 486nm through Narrowband H...

Narrowband H-beta filter is designed for nebula observation allowing 12nm bandwidth of light centered on a wavelength of 486nm through Narrowband H...

Optolong IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging to produce a sharper luminance image ...

Optolong IR Pass 685nm filter is designed to block wavelengths below 670nm and can be used in IR-LRGB imaging to produce a sharper luminance image ...

L-eNhance clip-filter designed for Canon EOS APS-C format cameras.  It is a dual-band pass filter which has been designed for DSLR, color CMOS and ...

Here's a cool comparison with a HyperStar C9.25 using no filter, a L-Pro Light Pollution Filter, and the new L-eNhance Filter from Optolong. The L...

L-eXtreme is a two 7nm bandpass filter which can be used with one-shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is a...

L-eXtreme is a two 7nm bandpass filter which can be used with one-shot color cameras like DSLR's (digital SLR), and monochrome CCD cameras, it is a...

Optolong L-Pro clip filter for Canon APS-C cameras! The L-Pro is designed to improve the visibility of various deepsky objects. By selectively redu...

  Optolong L-Pro clip filter for Canon EOS full frame cameras! The L-Pro is designed to improve the visibility of various deepsky objects. By selec...