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Presentation, tests and description of the new Optolong L-eNhance filter. A dual band H-Alpha, H-Beta and OIII filter for emission nebulae, planetary nebulae and remnant supernovae. Here is the link to the product: https://www.optolong.com/en/news/comp... ------------------------------------------------------------------------------------------ —•- MY CONTACTS -•— Facebook Page: / lucafornaciariphotography Website (where you can also find the dates of the workshops throughout Italy): http://www.lucafornaciarifotografia.com/ Instagram: / luca_fornaciari_photography —•- Our Community -•— Facebook Group: / 302227183801820 Telegram Groups: General Group (current) Here you can introduce yourself and ask for advice on the first equipment to buy, talk about astronomy, and off-topic discussions. https://t.me/joinchat/GJOWbUZIwOy1IW0... DeepSky & Wide Field Group Room dedicated to discussions about deep sky and wide field observation and photography. https://t.me/joinchat/Db1Z9BGhLViyFPU... Planets & Nightscapes Group Room dedicated to discussions about planetary observation, planetary photography and nightscape photography, including startrails and the Milky Way. https://t.me/joinchat/Db1Z9BHpPrtGwnO...