oymd Posted November 21, 2021 Share Posted November 21, 2021 (edited) Evening everyone I’m slowly assimilating my future MONO setup I’m planning on getting 2” LRGB and NB filters, even though the plan, for now, will be an APC-S sized mono sensor. For filters, my eye is on Baader’s new CMOS optimised filters, but I’ve read some negative comments with regards to halos on CNs. I’m looking at the NON F2 filters, as my scope is an Esprit 100ED f/5.5. I realise that short of Chroma and Astrodons, all filters will have issues. The Baaders are not CHEAP. £580 for the 6.5nm set and £915 for the 3.5nm set. So, I’m thinking of getting the Altair Astro NB premium set. They are 2”, 6.5nm and £475. I’ve seen ZERO reviews or feedback on the internet regarding their performance or quality? I tend to like Altair’s products, and anything I’ve bought or used from Altair has always been QUALITY. Whats the word on these filters? Would be immense if someone can give me some feedback on them? Many thanks Edited November 21, 2021 by oymd Link to comment Share on other sites More sharing options...
newbie alert Posted November 21, 2021 Share Posted November 21, 2021 Antlia look like they're better than most but without the price tag of Astrodon and chroma .. worth a thought 1 Link to comment Share on other sites More sharing options...
oymd Posted November 21, 2021 Author Share Posted November 21, 2021 18 minutes ago, newbie alert said: Antlia look like they're better than most but without the price tag of Astrodon and chroma .. worth a thought Just did a quick search on Antlia. I could only find them on RVO. The 2” are all 3nm Pro series. The three filters are £1374!! Thats an entirely different price bracket! Link to comment Share on other sites More sharing options...
newbie alert Posted November 21, 2021 Share Posted November 21, 2021 26 minutes ago, oymd said: Just did a quick search on Antlia. I could only find them on RVO. The 2” are all 3nm Pro series. The three filters are £1374!! Thats an entirely different price bracket! Sorry but I don't know what the altair ones were price wise, other than cheaper..I would expect them to be cheaper than baader, but I'd also expect them not to be as good..price of a big sensor eh Link to comment Share on other sites More sharing options...
newbie alert Posted November 21, 2021 Share Posted November 21, 2021 2 hours ago, oymd said: Just did a quick search on Antlia. I could only find them on RVO. The 2” are all 3nm Pro series. The three filters are £1374!! Thats an entirely different price bracket! Yeah, just looked them up..£475 a set... Thst would set alarm bells off in my head Link to comment Share on other sites More sharing options...
oymd Posted November 21, 2021 Author Share Posted November 21, 2021 3 hours ago, newbie alert said: Yeah, just looked them up..£475 a set... Thst would set alarm bells off in my head Yes. But the new Baaders are just £125 more for the set!? So, obviously not that cheap? Wish someone who has actually used them pick up on this thread and provide some feedback. I doubt they would be rubbish compared to Optolong/ZWO and similar cheap NB filter offerings. I generally have had god experience with Altair products. Link to comment Share on other sites More sharing options...
newbie alert Posted November 21, 2021 Share Posted November 21, 2021 (edited) 1 hour ago, oymd said: Yes. But the new Baaders are just £125 more for the set!? So, obviously not that cheap? Wish someone who has actually used them pick up on this thread and provide some feedback. I doubt they would be rubbish compared to Optolong/ZWO and similar cheap NB filter offerings. I generally have had god experience with Altair products. I think they're the same as optolong, same bandwidth Edited November 21, 2021 by newbie alert Adjusted 1 Link to comment Share on other sites More sharing options...
assouptro Posted November 21, 2021 Share Posted November 21, 2021 I have a set of Altair Astro premium 6.5nm 1.25” filters and I suffered from halos but mainly on Oiii which prompted me to upgrade to astrodon filters (only 1.25” second hand) Cheers Bryan 1 Link to comment Share on other sites More sharing options...
oymd Posted November 21, 2021 Author Share Posted November 21, 2021 (edited) 13 minutes ago, assouptro said: I have a set of Altair Astro premium 6.5nm 1.25” filters and I suffered from halos but mainly on Oiii which prompted me to upgrade to astrodon filters (only 1.25” second hand) Cheers Bryan Excellent! Finally someone out there who uses/used these filters! So, overall, are you happy with the filters? From my research, I think that almost ALL O3 filters suffer most from halos, except for the Astrodons and Chroma. Were you satisfied with the Halpha and S2 6.5nm filters? Edited November 21, 2021 by oymd Link to comment Share on other sites More sharing options...
assouptro Posted November 21, 2021 Share Posted November 21, 2021 (edited) 2 hours ago, oymd said: Excellent! Finally someone out there who uses/used these filters! So, overall, are you happy with the filters? From my research, I think that almost ALL O3 filters suffer most from halos, except for the Astrodons and Chroma. Were you satisfied with the Halpha and S2 6.5nm filters? sorry for the delay in my response it’s my wedding anniversary! I will try and dig out some files to give you some examples. I was happy when I first used them and I think the ha and sii were halo free but it was my first narrowband imaging rig post dslr so the difference was amazing to me! I didn’t use them long before I swapped the Oiii, (I saw an astrodon oiii 5nm for £250) and I continued with the Altair ha and sii and astrodon oiii for a few months before I saw a full set of astrodons including rgb for £900 so I swapped the lot I hope that helps? Bryan Edit* here is a quick image taken near midsummer from a campsite near Kielder a couple of nights worth, but never dark atik 460 ts65quad Edited November 21, 2021 by assouptro Added image 1 Link to comment Share on other sites More sharing options...
oymd Posted November 21, 2021 Author Share Posted November 21, 2021 Many thanks for your reply! that’s very helpful. and CONGRATS OF COURSE!! Link to comment Share on other sites More sharing options...
oymd Posted November 21, 2021 Author Share Posted November 21, 2021 4 hours ago, assouptro said: sorry for the delay in my response it’s my wedding anniversary! I will try and dig out some files to give you some examples. I was happy when I first used them and I think the ha and sii were halo free but it was my first narrowband imaging rig post dslr so the difference was amazing to me! I didn’t use them long before I swapped the Oiii, (I saw an astrodon oiii 5nm for £250) and I continued with the Altair ha and sii and astrodon oiii for a few months before I saw a full set of astrodons including rgb for £900 so I swapped the lot I hope that helps? Bryan Edit* here is a quick image taken near midsummer from a campsite near Kielder a couple of nights worth, but never dark atik 460 ts65quad Many thanks for your reply! that’s very helpful. and CONGRATS OF COURSE!! Sorry, last question. Moving to Astrodon, was it night and day? Link to comment Share on other sites More sharing options...
assouptro Posted November 22, 2021 Share Posted November 22, 2021 1 hour ago, oymd said: Sorry, last question. Moving to Astrodon, was it night and day? I’m afraid so. especially Oiii my first image with the new Oiii filter previously I would have had a halo to deal with on this unfortunately I can’t remember if the Ha and Sii are astrodon or Altair, sorry I have since bought a 3nm Oiii to assist capturing that bandwidth under moonlight but not had the opportunity to really test it However, now I’m dealing with the CCD/CMOS issue and considering a complete shakeup of my imaging rigg! It never ends!! 🙄 Cheers Bryan 1 Link to comment Share on other sites More sharing options...
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