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Thread: Filters to get

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    Default Filters to get



    Ok, here goes. I'm getting ready to start purchasing filters. Now I have a few of the colored ones. Would like some enlightenment on what filters to get for different atmospheric conditions so I can view nebula, DSO objects, galaxies ......etc.
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    Default Re: Filters to get

    About the only filters for DSO's are the UHC or narrow band pass filters. They are very expensive!

    You might try a light pollution filter, however your milage will vary as light pollution is unfortunately a lot more broad band than it once was. Good LP filters aint cheap either.

    In a nutshell prepare to open your wallet for a small to moderate amount of difference.
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    Default Re: Filters to get

    Quote Originally Posted by Wire View Post
    Ok, here goes. I'm getting ready to start purchasing filters. Now I have a few of the colored ones. Would like some enlightenment on what filters to get for different atmospheric conditions so I can view nebula, DSO objects, galaxies ......etc.
    Easily my most used filter is the UHC. No good for galaxies but nice for gas clouds like M42 and some planetary nebula
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    , various other bits and bob.

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    Default Re: Filters to get

    I like the UHC and O-III Filters the most.

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    Default Re: Filters to get

    My experience has been that filters are the absolute LAST improvement to consider, if at all. You do not mention your EP's in your equipment list but I can bet that the money you may spend on filters will be better used on better EP's or other accessories (dew zappers, tube flocking, an eyepatch etc).
    I might agree that color filters may enhance planetary observation but are useless for DSO's.
    It may not be possible for you but a dark site is the best antidote against LP. I recently lost my access to a dark sky site due to transport limitations and will have to learn to deal with in-town LP but it won't be involving filters.
    There is always something else that can improve your LP conditions.
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    . Canon Rebel XS DIY modified. I- Optron skytracker. Sky Watcher 8 inch collapsible Dob. 30 mm, 25 mm ,20 mm, 15 mm, 10 mm ,8.8 mm EPS plus plus plus. Cometron 12 x 70 binos plus a couple of 6X42 birders. Sky Watcher PRO ED 80 mm. UHC/LPR, OIII, UV/IR cut filters . Flip mirror. 5 mW green Laser pointer. Telrad donated to Rick18704-Lots of hope. Lousy skies.

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    Default Re: Filters to get

    How about an Orion Mars filter for the up coming opposition?

    mars1.jpg

    Seems similar to the TeleVue Bandmate Planetary filter, now discontinued.

    mars2.jpg

    Just a thought.
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    Default Re: Filters to get

    I have an Orion Ultrablock which is a narrow band filter. I use it on emission and planetary nebula. It does make a difference, but it it can be subtle and you still need to use good observing skills to make the most of it. That is not to say they aren’t worth it, just make sure you don’t expect too much from them.
    Unfortunately filters can’t replace dark skies.
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    and an old Meade 2080 GEM
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    Default Re: Filters to get

    I do have quite a bit of LP. My eyepieces are 2"- 20 mm Meade 5000, 15 mm Luminos, 10mm Luminos, 5 mm X-Cel and a few plossls. I know the filters I'm inquiring about are pricey. I was thinking of starting out with a UHC and a O-111.
    My Scopes: Celestron Nexstar 8se, w/RDF & Telrad, Sky Portal Wifi Dongle
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    Default Re: Filters to get

    My first filter was the DGM NPB, which is a narrow pass filter. It is spectacular! I also have a DGM O-III filter for planetaries. I just got the Orion SkyGlow for use in my backyard to block basic LP when I look for galaxies, and open clusters. I haven't used it much yet, but I was able to see M81/M82 in my backyard, which is an improvement.
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    Default Re: Filters to get

    I have 7 or 8 filters and have yet to use one for AP. Including the SkyGlow. I don't have a filter wheel and am not even sure how/where to insert it in the first place. With a 1.25" visual end -- it is simple -- just screw it onto the EP or camera adapter mount. My defense against LP is to try to image near the object's zenith for the night without risking a meridian flip and low gain settings. It is not a bad compromise for me -- there are about 300,000 people in the area and the LP is -- not the worst I have ever encountered. I am actually well pleased with the darkness of the background in my images so far. StarTools does a good job to increase contrast and sharpness on my images -- I get a big boost in detail in StarTools by binning, exposing and using contrast and sharp transforms.

    Filters for 2" AP imaging trains are probably best put into a filter wheel, I think. Once you add that, your collection requirements go up considerably from what I have seen. You have two main choices -- narrowband and LRGB. As others have said -- they are expensive -- not only in monetary terms, but also in terms of data collection times.

    I will get a Moonlite focuser before investing as much as I have in the OTA on filters because filters also tend to introduce focusing issues. My refractor is baffled and has a long dew cap, which helps with the off-axis light.
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