OPTOLONG EOS-FF Filter L-Pro Clip-on Optical Astronomical Monocular Telescope for Camera Built-in Light Pollution LD1003D |

OPTOLONG EOS-FF Filter L-Pro Clip-on Optical Astronomical Monocular Telescope for Camera Built-in Light Pollution LD1003D |

——To EU customers,

(Customers in other countries can ignore this letter)

Friends from the European Union,the price you see is tax-inclusive, but AliExpress does not directly charge tax for orders over 150 euros,so when you actually place an order, you will find that you only need to pay about 80% of the price. For example, for a product of US$1,200, you will find that you only need to pay US$1,000 (not including tax) when you buy it. If French friends have problem that it needs to fill in the VAT number, please contact the seller to solve it.

Other countries do not have these problems. thanks.

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L-Pro Filter:

L-Pro is an abbreviation of L-Professional, light pollution restraint and high transmittance of nebulae emission lines are two points of this type.

For the target object, the design of multi-bandpass with visible range 400-700nm, not rigidly natural flavor reinstated on subjective performance to express the feelings of colors, and reveal image details, which can be matched by no other experience. Because other light pollution filter type cut most of the details.

In the light pollution environment, it is not only suitable for emission nebulae, reflection nebulae, but also for the objects with continuous spectrum so that make nebulae easier to see.

Visually, L-Pro guarantee large amount of nebula emission through, and block certain types of artificial lights, which improving contrast efficiency of the object, not brightness...

With CCD and DSLR is better choice for deep sky photography and wide-field astrophotography.

L-Pro spectral line of emission:

High transmittance at OIII (496nm&500nm), Hβ(486nm), NII(654nm&658nm), Ha(656nm)and SII(672nm).

It would be effective in blocking city Na (589nm/616nm), Hg (435nm/578nm), and other artificial lights.

L-Pro has a good performance for a wide range of ionized hydrogen area.

According to filter characteristic, type of the objects what in OIII, H-Beta and Ha with high energy, very suitable for shooting.

In heavy light pollution areas of high pressure mercury and sodium lamps, go ahead photographic observation of deep sky objects for emission nebula, planetary nebula...shall be needed.

L-Pro Filter production processes:

Optical double Sided polishing process ensured degree of parallelism and flatness above 30" and 1/4λ separately in order to guarantee high image quality.

Precision optical coating increases the transmittance and blocking depth effectively.

Electron gun evaporation method

For the produced membranous film is dense, wear-resistant and heat, ion assisted deposition technology can significantly improve the properties of filter surface.

Planetary mounts for vacuum coating improve high uniformity of filter wavelength.

Main Feature:

Metal frame, superior aviation aluminum

Sophisticated CNC molding in one

Laser engraving characteristic is never-faded

Multi-bandpass light pollution filter for astrophotography

Precise and sharp roll-off at light pollutant emission lines

Very high transmission (~90%) at major nebula emission lines

Multi-layers anti-reflection coating

Notes: The EOS -FF is suitable the Camera type: Canon EOS 5D2/ EOS 5D3/ EOS 6D only

Tip: You need to pre-lift the reflector when installing.

WARNING: The filters of optolong are not designed for sun observation. DO NOT LOOK AT THE SUN WITH SVBONY FILTER. You would be BLIND if you fail to observe the warning.

Parcel:

OPTOLONG EOS-FF L-Pro Filter

PP Material Plastic Box

Reference spectrum

Picture show

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