ERF filter and Cell

Use this section to discuss "standard" Baader/Coronado/ Lunt SolarView/ Daystar, etc… filters, cameras and scopes. No mods, just questions/ answers and reviews.
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alessbonsai
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ERF filter and Cell

Post by alessbonsai »

For a future Daystar Combo purchase
Which barlow
Which ERF filter do you use? I am looking at the Baader Filters but the cell costs more than the ERF filter
Do you know other manufacturers or who produces cell - 3D-printed filter cells
Danke


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marktownley
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Re: ERF filter and Cell

Post by marktownley »

Which scope are you using?


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alessbonsai
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Re: ERF filter and Cell

Post by alessbonsai »

100esprit
72ed
70/900 acro


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JochenM
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Re: ERF filter and Cell

Post by JochenM »

I wouldn't bother spending the money on a full aperture ERF if those are the only scopes you'll be using (meaning nothing higher aperture than that).

I personally use my Quark on both an 80ed and 150 achromat for medium duration sessions during the summer (lets say 2-3 hours or so if there's plenty to see/capture). I use a sub-aperture ERF in the form of a 2" Baader 35nm H-Alpha (just a red filter will do as well), which basically narrows things down and reflects a lot of the energy back out before it even hits the Quark. Never had any issues with it (everything stays nice and cool).


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MalVeauX
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Re: ERF filter and Cell

Post by MalVeauX »

You don't need a full aperture front mounted ERF/D-ERF for those apertures with a Quark.

Just use an internal 50mm (2") UV/IR block or similar filter on front of your diagonal or on a straight through extension. You can do this up to 150mm aperture on refractors.

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Re: ERF filter and Cell

Post by krakatoa1883 »

35nm H-alpha filter in front of the Quark or diagonal. Forget ordinary UV/IR cut filters they are not protective.


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