Chroma 3nm for Fast Systems - Anyone using them?

2 replies157 views
Bill McLaughlin avatar
I am considering replacing my present 6 nm Astronomik Max FR filters on my Epsilon 130D (f3.3) with the much narrower "Chroma OIII (3nm) Imaging Filter Optimized for f/2.8-f/3.6" (link is to the O3 but they have the others as well).  Should have higher contrast (and price ) for my lightly light polluted home site.

Anyone using these with a fast system and an IMX 455 or IMX 571 camera and have there been any issues?

Thanks!
Engaging
Dark Matters Astrophotography avatar
The high f ratio optimized filters do not carry a higher price, they are just a custom order at the time they are placed. We’ve sold a number of sets of these to customers and have not heard of any negative experiences. All of our experiences were on Delta Rho systems deployed remotely.
Dunk avatar
Or you could keep the Astronomik filters, take the Chroma money, sell the E130 and buy an E160….
Related discussions
Filters for f2
Any recommendations for filters for fast setups? F2 -f2.8?
Explores narrowband filter options specifically designed for fast optical systems.
Feb 22, 2023
Chroma narrowband for f/3 telescopes
I just received a quote from Chroma for some Ha, S2, and O3 filters designed for narrowband. Before I plunk down $5k, can anyone share their experience with these filters on a fast scope like the Epsilon 160? Thanks, Dan
Chroma 3nm filters on fast Epsilon scope; directly addresses your question.
Jun 15, 2023
I'm getting terrible pictures with this Player One camera, can someone help?
Hi, I purchased a Player-One Uranus M in the spring right around the time QHY and ToupTek perfected HDR mode on their versions of the IMX585 cameras. At the time Player One did not have HDR mode but after talking with customer service and learning th...
Player One camera issues not relevant; different camera model than IMX 455/571.
Sep 28, 2025
Would you replace the Built in UV/IR cut on a 2600MC with AR glass?
Hello All, I am looking to replace the built in UV/IR cut window on a 2600MC-Pro with AR window and using a better UV/IR cut filter with better cutoffs in the UV and IR (Baader cmos optimized UV/IR cut filter) so i get less UV and IR and better glass...
UV/IR cut filter discussion relevant to narrow-band filter optimization considerations.
Sep 18, 2025
Keep or sell my Optolong filters?
Hi, I have Optolong SHO filters with 6.5nm and 7nm 36mm since 2018, and i used them several times in the past without nice results due to LP in my area, and later when i added 3nm filters i no longer using those Optolong 6.5nm/7nm filters anymore, bu...
Optolong narrow filters in light pollution; directly relevant experience comparison.
Aug 22, 2025