Optolong L-Enhance 2 (SKU: OPL-13802) all astro filters opinie

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The two-band Optolong L-eNhance 2 "filter was designed to obtain the best possible quality of photos of nebula objects, without the need to use expensive sets of narrowband filters and a dedicated filter wheel.

This filter transmits over 90% of the light in the spectral lines emitted by ionized hydrogen (Hα and Hβ) and oxygen (OIII) atoms. Combined with the efficient cutting of the spectral lines characteristic of sodium and mercury lamps, this allows you to capture sharp, full of details and high-contrast images even near large cities or during bright moonlit nights.

The Optolong L-eNhance 2 "filter can be used both with digital SLR cameras and with color or monochrome CMOS / CCD cameras.

The most important features of the Optolong L-eNhance 2 "filter

• high transmission dual-band filter for OIII + Hβ and Hα lines
• compatible with digital SLR cameras, as well as color and monochrome CCD or CMOS cameras
• efficiency of cutting light pollution on the level> 99%

Technical specifications

• filter type: dual-range filter
• filter diameter: 2 "
• transmitted bands: OIII (495.9 nm, 500.7 nm) + Hβ (486.1 nm), Hα (656.3)
• maximum transmission:> 90%
• blocking range: 300 - 1000 nm
• efficiency in blocking light pollution:> 99%
• blocked bands of light pollution: mercury lamps (435.8 nm, 546.1 nm, 577 nm, 578.1 nm), sodium lamps (598 nm, 589.6 nm, 615.4 nm, 616.1 nm)
• Filter material: B270 glass
• filter thickness: 1.85 mm
• surface quality index: 60/40
• parallelism: 30 "
• RMS execution accuracy: λ / 4

Elements of the set

• Optolong L-eNhance 2 "filter
• plastic protective packaging

guarantee

24 months

Field test (February 2021, by Pawe³ T.)

object: IC 434 (Koñski £ eb in Orion); setup: ZWO ASI294MC pro, WO SpaceCat 51, ZWO ASI AIR PRO, EAF, guider ZWO 30mm, ASI mini 30mm, Optolong L-enhance filter; mounting Ioptron CEM25)



(click to enlarge)