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imaging with narrowband-emission line filters is an excellent way to take great images as most types of light pollution can be blocked effectively
working as well as when they were brand new
and do not degrade when getting older
7V 1000mAh lithium-ion battery is attached
2 to f/1:8 with about 90% of the maximum transmission at a f/2 as guaranteed performance data
SVBONY Aspheric Wide Angle Eyepiece 4mm / 10mm / 23mm (62° AFOV, 1.25″) Size:F9301AC Svbony 62° HD 23mm Eyepiece imaging with narrowband-emission line filtersThe SVBONY Aspheric Wide Angle Eyepiece (62 AFOV) is a simple, sharp performing upgrade for 1. 25" telescopes, available in 4mm, 10mm, and 23mm focal lengths. These eyepieces are designed to give a wider, more immersive view than many basic kit eyepieces, making them a popular choice for lunar, planetary, and general deep sky observing. Key Features 62 wide angle apparent field of view for a more spacious, comfortable view Aspheric optical design
