Hello,
I’m currently considering buying new filters for my Epsilon 160 with an IMX571 mono camera.
Right now, the Antlia V-Pro LRGB together with the 3nm Highspeed filters have caught my attention.
Does anyone have experience with these filters and can share some insights—maybe even in combination with faster optics or even the Epsilon?
There isn’t much information available online, unfortunately.
I’d be especially interested in star rendering (halos, flares, etc.).
Best regards,
Brian
I use the the Edge 4.5nm on my Ocal H2 205mm f2.7 and find they are great. Until this scope, I’ve used Chroma 3nm normal speed filters which have also been great, but aren’t appropriate for the f2.7. But the Edge filters show zero halos and are around 90% transmission even at f2.7 since they are slightly pre-shifted to accommodate higher speed scopes
Brian · Apr 21, 2026, 09:14 AM
Hello,
I’m currently considering buying new filters for my Epsilon 160 with an IMX571 mono camera.
Right now, the Antlia V-Pro LRGB together with the 3nm Highspeed filters have caught my attention.Does anyone have experience with these filters and can share some insights—maybe even in combination with faster optics or even the Epsilon?
There isn’t much information available online, unfortunately.I’d be especially interested in star rendering (halos, flares, etc.).
Best regards,
Brian
I just bought these filters for f/5.9 and they work well for me. Not as fast as your Epsilon. I chose them over Optolong due to a bad Oiii filter that took 2 months to get Optolong to even respond to a replacement request and if it had not been for Agena, they never would have responded. Just posted an image using them.
DavesView · Apr 21, 2026, 04:36 PM
I just bought these filters for f/5.9 and they work well for me.
Is there a reason why you’re using the Highspeed for such a “slow” optical setup?
I’d think the regular 3nm filters from Antlia should work just fine for that as well.
But it’s great to hear that the filters are performing well.
I’m just about to hit the buy button 😄
I use Astronomik MaxFR 6nm Ha, Oiii, Sii, Astronomik Deep Sky RGB, Astronomik L2 Lum filter with my Epsilon 130, ASI2600mm. I have not experienced any issues with these filters, and I have a few images on my AB page with this set up.
Brian · Apr 21, 2026, 04:54 PM
DavesView · Apr 21, 2026, 04:36 PM
I just bought these filters for f/5.9 and they work well for me.
Is there a reason why you’re using the Highspeed for such a “slow” optical setup?
I’d think the regular 3nm filters from Antlia should work just fine for that as well.But it’s great to hear that the filters are performing well.
I’m just about to hit the buy button 😄
Actually, and I may be wrong, these are the Antlia 3nm Pro. They both show as 3 nm bandwidth, so I wonder how that is accomplished. When I chose them in Astrobin ‘Equipment’ for the purpose of filling out the equipment card, 3nm Pro high speed was how they were listed and the only choice. I then began assuming… 😇
1x
Antlia 3nm Narrowband Sulfur II (SII) Pro Imaging Filter - 2" Mounted
1x
Antlia 3nm Narrowband Oxygen III (OIII) Pro Imaging Filter - 2" Mounted
1x
Antlia 3nm Narrowband H-Alpha (Ha) Pro Imaging Filter - 2" Mounted
Versus
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Antlia 3nm Narrowband Sulfur II (SII) Pro Highspeed Imaging Filter for f/2.6 - f/3.6 Telescopes - 2" Mounted (Back-order)
1x
1x
DavesView · Apr 21, 2026, 07:10 PM
m just about to hit the buy button 😄
Actually, and I may be wrong, these are the Antlia 3nm Pro. They both show as 3 nm bandwidth, so I wonder how that is accomplished. When I chose them in Astrobin ‘Equipment’ for the purpose of filling out the equipment card, 3nm Pro high speed was how they were listed and the only choice. I then began assuming… 😇
The Antlia highspeed versions are shifted up a few nm, so when a fast optic shifts the effective bandpass down it ends up in the right place with fast optics.
The edge versions are a little wider and their center is shifted about 1nm up, so work with both slow optics and fast optics, which was what I needed.
I use the Antlia 3nm highspeed narrowband filters on my Delta Rho 350 at f3.
I moved to these from the Baader equivalent because I saw haloes on brighter stars.
There are still (reduced) haloes visible with the Antlias on the brightest stars (mainly OIII) but, having used similar filters on a variety of scopes for a while now, and seeing variable accounts about the halo performance of identical filters online, I have concluded that the individual optical train must also play a large part in all this ……and that some systems simply accentuate any filter issues more than others. If that is the case, then the only real test is probably to try them and see what happens…
All that said, I’m perfectly happy with them.
Hi Jon,
thanks for your reply. Sounds good!
A small chance to get a halo is always there. Even with Chroma.
Are you also using the LRGB V-Pro by Antlia?
Do they work fine?
Greetings
Brian
I’m currently still using the Baader filters for LRGB as I had trouble finding a set of Antlias locally in 50mm unmounted form (2 inch filters produce significant vignetting on this scope with ASI6200MM). I hope to get there one day🙂
So the Baader LRGB are working fine on the fast scope?
I cloud get a used set quite cheap.
They work fine for me but I don’t do a lot of broadband work with this scope. I mostly just use short R,G,B exposures and a low degree stretch to compose RGB stars for my narrowband projects. That doesn’t really push them very hard…
Brian · Apr 22, 2026, 05:14 AM
A small chance to get a halo is always there. Even with Chroma.
I’ve not experienced nor heard of anyone having halo issues related to Chromas. And, even if they did, Chroma will stand by their product and work with you to replace them.
Rick Krejci · Apr 22, 2026, 01:19 PM
I’ve not experienced nor heard of anyone having halo issues related to Chromas. And, even if they did, Chroma will stand by their product and work with you to replace them.
I know that some users exspirierend some issues with the 3nm filters.
The problem ist that I cant afford new Chroma ones.
So I would buy them used and then no dealer would help you when you have issues.
I currently use this filter set in combination with an IMX571 mono camera (ASI2600MM Duo) and a Redcat 91 (f/4.9). I haven’t had any issues with star halos or flares, and find that as long as I have proper focus and good guiding, I get really clean stars. Since I use the duo version of this camera, that means I even do my auto-guiding through these filters, which have all worked very well.