Exclusive offer from Cyclops Optics: Besides the usual FREE Shipping Offer for most countries worldwide, now we further offer a FREE LensPen (original value US$11), allowing you to clean the surface of your optical equipment safely. In case your chosen option is out of stock, we will send another version for you.

STC Astro-Multispectra Clip Filter for Olympus M43 bodies is a novel light pollution filter designed by STC Optics with transmission characteristics designed by professional astronomer and renowned astrophotographer Dr. Wei-Hao Wang. Check out the comparisons below to see how effective the Astro-Multispectra filter is!

Placing the light pollution filter closer to the sensor reduces color shift that may occur at the peripheral areas of the image if front screw-in lens filter is used.

Highlights

• Greatly reduces interference from artificial lighting in city
• Suitable for Olympus M43 mirrorless camera
• Natural colour representation
• High transmission for astronomical bodies emission
• Co-developed by STC and Dr. Wei-Hao Wang, a professional astronomer and renowned astrophotographer

* Please refer to compatible camera list below

Features

• Clip Filter is designed for Olympus M43 cameras. Mounting and removing the Clip-Filter is quick and easy. The colour shift problem that may occur due to the wide angle SLR lens in peripheral areas of the image could be reduced. The recommended SLR lenses focal length is 14mm or longer on APS-C bodies.
• The material is A2 stainless steel which is virtually non-magnetic and less brittle at low temperatures. Specially designed Clip-shaped structure could be pressed firmly while attaching the lens on camera body.
• STC Astro-MS Clip filter can reduce the interference from artificial lighting in the city, and enhance the wavelength of Hα, Hβ, OIII and SII. (Hα=656.3 nm, Hβ=486.1 nm, OIII=495.9 & 500.7 nm, SII=672.4 nm)
• It is coated by the use of the IBAD (Ion beam-assisted deposition) technology on Schott® B270 optical 2mm glass, working for higher durability and easily cleaning, and preventing aging variation in optical spectral characteristics due to temperature and humidity change
• High-quality double-sided NANO Anti-smudge coating provides excellent performance on waterproof and grease-proof capability
• Considering the different optical lens properties of all kinds of brands, it is normal for spherical and coma aberration to occur on part of the fisheye lens, super wide angle lens and wide angle lens.
• 12 months' original manufacturer warranty and lifetime warranty on aluminium frame 

Compatible Olympus M43 bodies

• E-M1 Mark II
• E-M1X
• E-M1
• E-M5 Mark II
• E-M10 Mark III
• E-M10 Mark II
• E-M10
• PEN-F
• EPL 9
• EPL 8
• EPL 7

Compatible Fuji X-mount lenses

• M.ZUIKO DIGITAL ED 8mm F1.8 Fisheye PRO
• M.ZUIKO DIGITAL ED 17mm F1.2 PRO
• M.ZUIKO DIGITAL ED 25mm F1.2 PRO
• M.ZUIKO DIGITAL ED 45mm F1.2 PRO
• M.ZUIKO DIGITAL ED 300mm F4.0 IS PRO
• M.ZUIKO DIGITAL ED 7-14mm F2.8 PRO
• M.ZUIKO DIGITAL ED 12-40mm F2.8 PRO
• M.ZUIKO DIGITAL ED 12-100mm F4.0 IS PRO
• M.ZUIKO DIGITAL ED 40-150mm F2.8 PRO
• M.ZUIKO DIGITAL 17mm F1.8
• M.ZUIKO DIGITAL 25mm F1.8
• M.ZUIKO DIGITAL 45mm F1.8
• M.ZUIKO DIGITAL 14-42mm F3.5-5.6 II R
• M.ZUIKO DIGITAL ED 12mm F2.０
• M.ZUIKO DIGITAL ED 30mm F3.5 Macro
• M.ZUIKO DIGITAL ED 60mm F2.8
• M.ZUIKO DIGITAL ED 75mm F1.8
• M.ZUIKO DIGITAL ED 9-18mm F4.0-5.6
• M.ZUIKO DIGITAL ED 12-50mm F3.5-6.3 EZ
• M.ZUIKO DIGITAL ED 14-42mm F3.5-5.6 EZ
• M.ZUIKO DIGITAL ED 14-150mm F4.0-5.6 II
• M.ZUIKO DIGITAL ED 40-150mm F2.8 PRO
• M.ZUIKO DIGITAL ED 40-150mm F4.0-5.6 R
• M.ZUIKO DIGITAL ED 75-300mm F4.8-6.7 II

Also available for

• Canon APS-C
• Canon Full Frame
• Fujifilm X APS-C
• Nikon APS-C
• Nikon Full Frame
• Olympus M43
• Pentax
• Sony Full Frame
• Sony APS-C
• 48mm / 77mm

Before & After

Without STC Astro-Multispectra	With STC Astro-Multispectra

Direct JPEGs output from Nikon D800

Credits: Dr. Wei-Hao Wang Camera: Nikon D800 (astro-modded) Lens: Nikkor AIS ED 180mm f/2.8 @ f/4 Exposure: 2 minutes

STC Astro-M Transmission Characteristics

1. Natural colour representation by selectively blocking out UV light below 410nm, sky glow in between 620nm and 640nm and infrared light beyond 680nm
2. High transmission for astronomical bodies emission at Hα=656.3 nm, Hβ=486.1 nm, OIII=495.9 & 500.7 nm, SII=672.4 nm and slightly passing yellow-orange-ish emission at 605nm.

STC Technologies

STC utilises ion beam assisted deposition (IBAD) to solidly bind the coatings onto Schott B270 glass, the very same glass used in Zeiss lenses. Such technique enhances the light transmission and also durability of the 160 layers of coating deposited to produce the advanced filter characteristics shown above.

With patented Ultra Layer® technology, both surfaces of Astro-Multispectra are coated with Anti-Smudge nano-coating to prevent dust and water from settling on the filter surface. Dew will not form and your filter is always clean. If necessary, it's effortless to clean.

Warranty

6 months' warranty covering defects due to manufacturing and workmanship

Extended to 12 months by registering on STC website.

Specifications