TiO and He filters?

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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essexsunseeker

TiO and He filters?

Post by essexsunseeker »

Don't know much about the use of these filters in relation to using with a Herschel Wedge. Would they be beneficial or not for observing/imaging?


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Re: TiO and He filters?

Post by Wah »

What's the wavelength and bandwidth of the filter?


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Re: TiO and He filters?

Post by marktownley »

Don't know much about the use of these filters in relation to using with a Herschel Wedge. Would they be beneficial or not for observing/imaging?

The longer wavelength of the TiO2 filter is good for taming the seeing a bit with larger apertures, but, the longer wavelength results in lower resolution. Now I just use a smaller aperture with the baader continuum filter when the seeing isn't as good as I would like. The TiO2 is 705nm, 10nm (well certainly the one I have is...)

Not sure about the He.


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Re: TiO and He filters?

Post by swisswalter »

Hi Philip

I use a He I filter from edmund (587.6 nm) it works fine, but I have not had the oportunity to use it side by side with other filters on a summer day to say top or flop


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essexsunseeker

Re: TiO and He filters?

Post by essexsunseeker »

Thanks guys. Think I've made up my mind. Having just bought the LS152 and a white light wedge to go with it (comes with an ND3 filter) I think that will quite do for now.


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Re: TiO and He filters?

Post by brianb11213 »

Thanks guys. Think I've made up my mind. Having just bought the LS152 and a white light wedge to go with it (comes with an ND3 filter) I think that will quite do for now.
Try a Baader Solar Continuum or OIII nebula filter. Or even an ordinary green (Wratten #58). Any of these will improve the "white light" view with a Herschel wedge or solar film filter.

He I have no experience with. TiO might well work OK for imaging but the eye is not very sensitive at wavelengths over 700 nm & I don't think the view would be very good. You MUST have the ND3 in the wedge for visual use ... whatever other filtering you have installed.


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Re: TiO and He filters?

Post by alex »

Don't know much about the use of these filters in relation to using with a Herschel Wedge. Would they be beneficial or not for observing/imaging?

Hi there :)

Have you seen this site?It has some comparison photos and a few links.

http://www.rkblog.rk.edu.pl/w/p/filters ... hel-wedge/


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Re: TiO and He filters?

Post by marktownley »

Yes, should have clarified, the TiO2 is only really an option for imaging...


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