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Thread: Lumicon OII filters - Differences between Generations

  1. #1
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    Default Lumicon OII filters - Differences between Generations



    Hi there forum,
    I have recently been upgrading all of my old 1.25" EP's and filters to 2"
    One of the things i recently upgraded was my OIII filter.
    I have been using an older 1.25" Lumicon OIII that came in the dark blue box and lists their address as:
    2111 Research Dr. #5
    Livermore, CA, 94550
    This one seems to have a dark rose coloured tint to everything, and from what i have been able to figure this is from an early generation that had quite a bit of red leakage.

    I recently obtained what looks like a newer 2" Lumicon OIII filter and this one comes in a clear box and lists their address as:
    6242 Preston Ave (same zip code)
    This one looks like a totally different filter. Mostly bluish-green tint which from the sample shots i have seen from OIII filters is more common and expectred.

    I did a bit of reading and it appears that there are up to 9 generations of the Lumicon OIII filter out there in the wild including a brand new one that they call the 'Gen 3' just to make things confusing.

    Wondering if anybody out there has knowledge of the history of these filters and what the key changes are between generations and more to point, what the pros/cons in each genertion would be.
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    Default Re: Lumicon OII filters - Differences between Generations

    I'm as confused as you are when it comes to Lumicon 'generations'. I've seen many threads here and there with discussions trying to discern the older generation ones, from the ones of which they were acquired by Farpoint, to the new ones questioning which has what bandpass and which characteristics. Some say the mid generations, circa Farpoint, were not as good as the older ones, and that the newer (gen3) ones are improved. But no one seems to able to tell accurately which is which. That's why I settled in with Astronomik and left the guesswork to others.
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    Default Re: Lumicon OII filters - Differences between Generations

    Farpoint bought Lumicon, Astrodon, and JMI. They became OSI (Optical Structures Incorporated).
    You can find some information on their versions of O-III filters here:
    https://www.cloudynights.com/topic/6...ters-are-here/


    There is another one too the new Lumicon Econoline O-III filter. I bought one of the 2" Lumicon Econoline O-III filters. Under really dark skies at the Nebraska Star Party I got a chance to compare it with a Zhumell, Thousand Oaks and a regular Lumicon O-III. Blows away the Zhumel. Just a hair darker than the Thousand Oaks and Lumicon. It is a very good filter on its own and for the price it's a great buy. Here are details on this filter:
    https://www.cloudynights.com/topic/5...micon-filters/
    The 2" Lumicon Econoline O-III filters are currently on-sale for $50.
    https://farpointastro.com/shop/lumic...en-iii-filter/
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    Default Re: Lumicon OII filters - Differences between Generations

    I have a few Lumicon 1.25" and 2" H-beta, OIII and Deep Sky (broad band) filters. They all are form mid generation(s) in black and clear boxes with pass bands % hand written on the white labels on the back of the box for each filter. I have a top line spectrophotometer at work and all filters I have produced good quality transmission spectra with % matching what was reported by Lumicon.

    I have not tested any of older (blue box) filters, but read on forums that some of earlier versions could delaminate.
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    Default Re: Lumicon OII filters - Differences between Generations

    Hi Everyone, I also have joined the ranks of the confused. I have been chasing down a Lumicon OIII Gen3 which will be marked on the side of the filter. Apparently the Gen3 performs better than the more recent models. Unfortunately I have not been able to track one down in Australia or anywhere else for that matter. Agena Astro is the only place that I have seen them advertised with the Gen3 marking but they are not in stock. I also have settled for the Astronomik O-III which I believe is of an equal quality. I am very excited because I ordered one last week, along with a TeleVue Delos 14mm EP. They should arrive this coming week. Hoping for clear skies.

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    Default Re: Lumicon OII filters - Differences between Generations

    Quote Originally Posted by alpha1 View Post
    Hi Everyone, I also have joined the ranks of the confused. I have been chasing down a Lumicon OIII Gen3 which will be marked on the side of the filter. Apparently the Gen3 performs better than the more recent models. Unfortunately I have not been able to track one down in Australia or anywhere else for that matter. Agena Astro is the only place that I have seen them advertised with the Gen3 marking but they are not in stock. I also have settled for the Astronomik O-III which I believe is of an equal quality. I am very excited because I ordered one last week, along with a TeleVue Delos 14mm EP. They should arrive this coming week. Hoping for clear skies.
    I have Astronomik UHC and it is a very good filter. I am sure you will like their OIII to.
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