Optolong Astronomy Filter

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"No halo. " To test Optolong L-Synergy filter and the new L-eXtreme, here is a test on a very bright star (Navy in Cassiopeia, near IC63) 10 x 60s, and there is no visible halo. Image captured by astrophotographer Cédric Humbert. #L2 #optolongnew #synergy #LeXtreme #7nmdual

This is NGC 7000 using the new Optolong L-2 Combo,a total of 9 hours so far.This is my first time processing and shooting an HSO image.What an amazing set of filters! Askar FMA180pro Zwo asi533mcpro #Optolong L-Synergy 5hrs 60x5minute L-Extreme 4hrs 48x5minute Credit:Sam Skirchak

Sh2-115 and Sh2-116 TS 90 Owl telescope Omegon 571vTec camera Ultraguide 60/240 guide telescope ASI 224 guide camera Eq6 mod Rowan mount #Optolong L-ULTIMATE DATA Total exposure 11 hours #L-SYNERGI DATA Total exposure 7.8 hours Credit: Mirko Tondinelli optolong.com/cms/column/ind…

The Lion Nebula (Sh2-132) in the constellation of Cepheus. 🔭Askar FRA400,8"RASA f/2 📷Zwo ASI2600MC Pro EQ6R Pro and CEM70 Exposure:120x6min L-Synergy's 70x6min L-extreme ASI120mini,30mm scope Filter: #Optolong L-Synergy,LeXtreme F2 ASI Air,DSS,Pixinsight Credit:Stars Over Bucks

NEW FILTER TEST!! on the amazing North America Nebula 🔭Askar FRA400 and Redcat 51 📷Zwo ASI 2600MC Pro Exposure: 90x6min #Optolong L-Synergy, 65x4min L-extreme Mount: ioptron CEM70 Guiding: ASI290mini, 30mm scope ASI Air, DSS, Pixinsight Sky: Bortle 6 Credit: Stars Over Bucks

NGC7380 #Optolong L-Synergy is a Duo-Band filter (SII-OIII) with a 7nm bandwidth,tested under a moon illumination of over 80% and bortle 8. I combined it with the L-Ultimate (Ha-OIII) to create an SHO image. Askar 140Apo refractor ASI2600MC Air color #camera Credit:Cédric Humbert

Test with the #new Optolong L-Synergy #filter The Heart Nebula in SHO,combining all the channels from the two shots. 🔭Askar fra600 📷Zwo Asi2600 duo ⚙️Zwo Am5 Filter Optolong L-Synergy,L-Ultimate temp 0 con dark,flat e darkflat 188x300s Pixinsight,Photoshop Credit:Gianni Lacroce

Testing the new Optolong L-Synergy #filter I chose to photograph WR134 in the constellation Cygnus. 🔭Newton Tecnosky Carbon 200 📷Zwo Asi 2600 duo ⚙️Zwo Am5 #Optolong L-Synergy filters temp 0 with dark, flat and darkflat 200 x 300s Pixinsight Photoshop Credit:Gianni Lacroce

NGC 7380, also known as the Wizard Nebula, is a star-forming region in the constellation Cepheus. 🔭TS 90 OWL 📷Omegon 571vTec Mount: EQ6 mod Rowan Filter: #Optolong L-Synergy (7nm S2/O3) Light: 52 x 600" Dark:40 Flat:40 DarkFlat:40 Credit: Mirko Tondinelli Hope you like it.

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Sh2-157, known as the Crab Nebula Shooting data: Mount: Skywatcher 150/750 Heq5 pro 📷294 MC PRO Integration: 205 exposures of 300" over 3 nights Filter: #Optolong L-Para 2" Acquisition: Asiair mini Guiding telescope: Take 60/240 Guiding camera: ZWO 224 Credit: Raffaele Calcagno

SH2-308 Dolphin Nebula Technical data Sky: OIII Stigliano (MT) SQM 21.2, Ha Valle degli Ulivi (TA) SQM 20.5 Lights:75x300s Ha + 73x300s OIII Setup:TS APO triplet 102/714@564mm, QHY 294 Pro mono, AZEQ6 GT, #Optolong Ha/OIII 3nm Credit:Tommaso Massimo Stella Hope you like it. #3nm

WR 134 This is a collaboration with Chuck's Astrophotography, with Chuck capturing the data with his 8" RASA & ASI533MC Pro,and then processed by me using Pixinsight. This is 20hours worth of data captured using an #Optolong L-Extreme filter. Credit:Peter Butler Hope you like it.

My latest capture - The Squid Nebula. It's a faint, massive outflow of oxygen gas. It's mysterious origin might be tied to a triple star system and is still being studied by astronomers. Celestron RASA telescope ZWO ASI533MC camera Optolong L-eXtreme Starfront Observatories

Star and Moon in Conjunction On September 8th 2025, a total lunar eclipse met the Milky Way, unfurling the vast cosmos into a breathtaking tableau beneath the night sky. Photographic Details: Camera: EOS R6 Lens: EF 16-35 f/2.8 Filter: #Optolong L-Pro Photographer: Zhang Dianjun

Thundering chaos in M24-HOLRGB Almost 28 hours of exposure with our telescope at @starfront_observatories. TS-optics 70/350 Qhy268m+ #Optolong LRGBSHOIr iOptron HAE29C-EC L 68x300" R 29x180" G 29x180" B 25x180" Ha 34x600" Oiii 73x600" Credit:Paolo Girotti & The iTeX collaboration

Sh2-115 in SHO It's a visible emission nebula in the constellation Cygnus, 7,500 light years from our solar system. Shots taken with #3nm filters with a full moon. 🔭 Askar fra600 reduced f3.9 📷Zwo Asi 2600mm ⚙️Zwo Am5 #Optolong filters 3nm Ha O3 S2 Credit: Gianni Lacroce #SHO

NGC 7822. A beautiful star forming region in the constellation Cepheus. 🔭Stellarvue SVX130T f/7 📷Zwo ASI 2600MM Pro Exposure: 60 x 6min SHO, 5x 2min RGB Mount: iOptron CEM70 Guiding: ASI120mini, 60mm scope Filter: @#Optolong 3nm and #RGB Sky: Bortle 6 Credit: Stars Over Bucks