SHO 7nm Kit

SHO 7nm Kit

Supplier
Optolong
Category
Optical Filters
Origin
China

Typically used with cooled monochrome astronomical CCDs or modified DSLRs for separate channels, later assigned to RGB as Ha, OIII, and SII to produce Hubble-palette images. SHO filters comprise H-Alpha 7 nm, SII 6.5 nm, and OIII 6.5 nm, with high transmission at 656.3 nm, 671.6 nm, and 500.7 nm. Accumulated exposure collects nebular line energy for higher contrast and finer structure. Source quality statement: precise processing and strict control underpin Yulong quality. Sample caption: M8, Optolong SHO-7 nm ©Alberto Ibañez. Packaging: silver-card carton, PP box, imported high-pressure white EVA lining. Notes: ambient light, display differences, and flash may alter apparent color; the actual item governs. Interference coating colors vary naturally with lighting. Design, appearance, or specifications may change before descriptions update. Materials, workmanship, and process design are identical across the series; only size differs. Consult for other sizes.

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Overview

Typically used with cooled monochrome astronomical CCDs or modified DSLRs for separate channels, later assigned to RGB as Ha, OIII, and SII to produce Hubble-palette images. SHO filters comprise H-Alpha 7 nm, SII 6.5 nm, and OIII 6.5 nm, with high transmission at 656.3 nm, 671.6 nm, and 500.7 nm. Accumulated exposure collects nebular line energy for higher contrast and finer structure. Source quality statement: precise processing and strict control underpin Yulong quality. Sample caption: M8, Optolong SHO-7 nm ©Alberto Ibañez. Packaging: silver-card carton, PP box, imported high-pressure white EVA lining. Notes: ambient light, display differences, and flash may alter apparent color; the actual item governs. Interference coating colors vary naturally with lighting. Design, appearance, or specifications may change before descriptions update. Materials, workmanship, and process design are identical across the series; only size differs. Consult for other sizes.

Specifications

ParameterValue
Specifications1.25”, 2”, 31mm (Unmounted), 36mm (Unmounted)

Key Features

Precision polishing on both sides ensures substrate parallelism better than 30 arcseconds and surface figure better than λ/4. Ultrasonic cleaning with purified water uses a 13-tank process to remove surface impurities and dust. Ion-assisted coating improves film density, adhesion and uniformity while reducing thermal drift. Rigorous quality inspection includes photometer spectral testing and laser-interferometer surface-figure testing for every filter.

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Supplier Information

Op
Optolong
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Founded in 1999 and located in Kunming, Yunnan, Kunming Yulong Optoelectronic Technology Co., Ltd. specializes in optical filters. Products include astronomical filters, fluorescence filters, bandpass filters, UV filters, beam splitters, and more, widely used in machine vision, medical, life sciences, and industrial inspection. The Optolong brand is sold in over 30 countries. The company holds ISO9001 and RoHS certifications and aims to be a trusted partner in optical filters.

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SHO 7nm Kit
Optolong · Optical Filters
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