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M31/M32/M110/NGC206 - Irg (2025) by Jan Bielański

Filters that capture two emission lines simultaneously.

Showing 1-50 of 62

	Replies	Views	Created
Is it a mistake to combine Ha-oiii 12nm with oiii-Sii 6nm filters? Acquisition Duo-Narrowband H-alpha +5 Gabriel Last post: Gabriel	6	153	Oct 18, 2025
Strange grainy artifacts in background when applying NXT - normal or error? Processing Noise Reduction Duo-Narrowband +3 Derek Vasselin Last post: Tim Ray	5	114	Sep 29, 2025
my 1st hubble palette attempts... Hubble Palette Group CMOS Filters Reducer +4 Larry Cable Last post: Larry Cable	3	145	Sep 25, 2025
Optolong L-Synergy first light Filters Duo-Narrowband Narrowband +1 Lorand Fenyes Last post: Gerassimos Arsenis	2	189	Sep 24, 2025
GPT5 minimalist work flow in PixInsight. Pleiades Astrophoto PixInsight Processing Duo-Narrowband +1 Himanshu Pandey Last post: Himanshu Pandey	9	321	Sep 10, 2025
Astro pixel Processor - How to combine a OSC broadband image and Extracted Ha and OIII from a dualband filter? Aries Productions Astro Pixel Processor (APP)ZWO ASI2600MC Pro Broadband +4 Itto Ogami Last post: andrea tasselli	10	213	Sep 5, 2025
Advice on duo-band filter selection for astrophotography setup Filters Acquisition Duo-Narrowband +4 cafuego Last post: cafuego	13	215	Aug 31, 2025
Tightest highspeed or f/2 dual band OSC filter? Filters Duo-Narrowband One-Shot Color Phil Creed Last post: Phil Creed	3	81	Aug 27, 2025
Dual narrowband imaging issue Antlia ALP-T Dualband 3nm Ha & OIII 2"ZWO EAF Duo-Narrowband +1 Alexey Korobeynikov Last post: Alexey Korobeynikov	23	823	Aug 6, 2025
D2 experience with fast optics (f/2.2)? Askar ColourMagic D2 (Sii+Oiii) Duo Narrow Band 6nm 2"Filters Duo-Narrowband Sjors Robroek Last post: Georg N. Nyman	8	211	Aug 4, 2025
Dual Band Filter OSC, Russell Croman Astrophotography StarXTerminator Optolong L-eXtreme Processing +2 Clayton Ostler Last post: kgav8r	22	716	Jun 12, 2025
A dual band filter for Luminance in LRGB images (monochrome camera) Acquisition Duo-Narrowband Deep Sky +2 John Hulme Last post: Rob Lyons	20	521	May 2, 2025
Dual Band Filter Discussion ZWO ASI2600MC DUO ZWO ASI533MC Equipment +2 Clayton Ostler Last post: Richard	56	1.3k	Apr 16, 2025
Askar Super-Duo-Narrowband D2 vs Askar Duo-Narrowband D2 Filter Equipment Filters Duo-Narrowband Georg N. Nyman Last post: andrea tasselli	10	194	Mar 11, 2025
Looking for Advice on SII & OIII Filters - Halo Issues with Askar D2 Equipment Filters Narrowband +1 Menelaos Last post: David Néel	12	327	Jan 29, 2025
Guiding with Optolong L-Ultimate? ZWO ASI2600MC DUO Optolong L-Ultimate ZWO ASI2600MC Pro +2 agard Last post: FrancoisGAP	22	695	Jan 16, 2025
Whats your recommendation for a dual narrowband filter on a fast f/2 system? Optolong L-eNhance Equipment Filters +1 Arny Last post: Dale Bush	10	495	Nov 21, 2024
Comparing duo-band filters ZWO Duo-Band Filters Acquisition +2 Philippe Barraud Last post: Rob Lyons	29	1.9k	Nov 15, 2024
[RCC] Soul Nebula: Where is my OIII? Russell Croman Astrophotography BlurXTerminator Duo-Narrowband HOO +1 FilippoTib Last post: FilippoTib	13	606	Nov 3, 2024
Spectral Measurements and Realsky Tests of Duo-Narrowband Filters Optolong L-eXtreme Equipment Filters +2 Florian Brill	0	70	Oct 13, 2024
duo filter for Redcat51/ASI183MC? ZWO ASI183MC Pro William Optics Redcat 51 ZWO ASI183MC +2 Francisco Martinez Last post: Dick Bakker	2	121	Oct 8, 2024
The cause and the elimination of halos around stars with some duo-narrowband filters Optolong L-eXtreme Filters UV/IR Cut +2 Walter Leonhard Schramböck Last post: Walter Leonhard Schramböck	27	907	Sep 22, 2024
Askar C2 Filter Halo Tests with NIR sensitive OSC cameras Equipment Duo-Narrowband One-Shot Color +2 astrovic47 Last post: Alan Brunelle	15	561	Sep 17, 2024
L-Ultimate Under Full Moon Optolong L-Ultimate Duo-Narrowband H-alpha +1 James Last post: James	8	489	Sep 15, 2024
Ha/O3 and S2/O3 data acquisition.... kind of confused.. I think Acquisition Duo-Narrowband Deep Sky peng155 Last post: D. Jung	14	427	Sep 6, 2024
[RCC] M16 first light with Celestron LP filter Narrowband Duo-Narrowband Request for feedback Kevin Knight Last post: andrea tasselli	1	118	May 21, 2024
New Script: DBXtract Pleiades Astrophoto PixInsight Duo-Narrowband NGC7635 +2 Raúl Hussein Last post: Raúl Hussein	88	7.4k	May 17, 2024
asi2600mm Duo (any practical experience?) ZWO ASI2600MM DUO Duo-Narrowband Narrowband Nick Grundy Last post: Dan Kohn	25	1.2k	May 8, 2024
Which dual NB filter is best for F/5? IDAS NBZ-II? IDAS Nebula Booster NBZ 2"ZWO ASI533MC Pro Optolong L-eXtreme +2 Oscar Last post: Jan Erik Vallestad	24	520	Mar 17, 2024
Askar ColourMagic Duo with fast focal ratio scope Askar ColourMagic D1 (Ha+Oiii) Duo Narrow Band 6nm 2"Filters Duo-Narrowband Arnie Last post: Arnie	11	643	Feb 13, 2024
Adding color to NB images Siril Team Siril Processing Bicolor +2 Kyle Cerniglia Last post: Oscar	3	239	Jan 27, 2024
Reflections/Star Halos with ALP-T Sii&Hb 5nm Antlia ALP-T Dualband 5nm SII&Hb 2"Filters Duo-Narrowband +1 Mau_Bard Last post: Mau_Bard	6	333	Dec 20, 2023
ASKAR Duo Magic D1 (6nm) Poor Transmission? Askar ColourMagic D1 (Ha+Oiii) Duo Narrow Band 6nm 2"Optolong L-eXtreme Filters +1 andrea tasselliFrequent contributor Last post: andrea tasselli	6	664	Dec 1, 2023
L-Ultimate on dark sky? Optolong L-Ultimate 2"Optolong L-Ultimate Optolong UV/IR cut +2 Cristian Arhip Last post: Gilmour Dickson	11	567	Nov 14, 2023
Best way to combine RGB and dual narrowband data Optolong L-eNhance Processing Duo-Narrowband +2 Daniele Borsari Last post: andrea tasselli	4	552	Oct 15, 2023
Help Needed with Stacking Multi Session Narrowband Data in Siril Siril Team Siril Narrowband Duo-Narrowband +2 Dominik Last post: Dominik	18	948	Jul 19, 2023
Looking for advice with selection of dual narrowband Ha/OIII filters for fast (F2) systems Equipment Duo-Narrowband H-alpha +1 Peter Goodhew Last post: Jeff Reitzel	4	341	Jul 10, 2023
Dual band <4nm halo free OSC filters Equipment Filters Narrowband +1 RobertM Last post: RobertM	4	329	Jun 21, 2023
L-Ultimate Star halos Optolong L-Ultimate 2"Optolong L-Ultimate Filters +1 Doversole83 Last post: andrea tasselli	12	1k	Jun 7, 2023
Can You/Should You Combine L-eNhance Data with L-eXtreme Data Optolong L-eXtreme Optolong L-eNhance Processing +2 Zak Jones Last post: frieda ritter	25	1.4k	Jun 1, 2023
Adding true color onto dual-band OSC data ZWO ASI533MC Pro Acquisition Duo-Narrowband +2 Phil Creed Last post: Tom Boyd	4	254	Apr 28, 2023
Imaging Time -- OSC filters vs. Sky Quality Optolong L-eNhance Filters Acquisition +2 Phil Creed Last post: Dale Penkala	13	755	Apr 21, 2023
Askar Filter HO + SO Processing SHO Duo-Narrowband +1 Maxime Martin Last post: Michael Ring	11	477	Feb 9, 2023
Askar Filter HO + SO Acquisition SHO Duo-Narrowband +1 Maxime Martin Last post: Werner Stumpferl	2	96	Feb 9, 2023
Narrowband Imaging with single shot colour and L extreme filter Pleiades Astrophoto PixInsight ZWO ASI2600MC Pro Acquisition +2 IrishAstro4484 Last post: Monty Chandler	3	289	Jan 17, 2023
Experiencias Askar 6nm Duo-Narrowband D Filter ¿Compiten a una mono? Filters Duo-Narrowband Español Rodrigo Castro Last post: Daniel Arenas	6	778	Jan 9, 2023
L-enhance vs STC Duo Equipment Filters Duo-Narrowband Thanos Last post: Joe Linington	4	225	Dec 27, 2022
Filter Acquisition Duo-Narrowband Deep Sky +1 Thanos Last post: andrea tasselli	1	85	Dec 14, 2022
Walking noise Acquisition Duo-Narrowband Deep Sky +1 Thanos Last post: Thanos	4	195	Dec 1, 2022
Dual band filter for OSC? Equipment Duo-Narrowband One-Shot Color Tareq Abdulla Last post: Tareq Abdulla	40	1.1k	Nov 5, 2022

Showing 1-50 of 62