Re: [ATM] Halpha filters

[Dominic-Luc Webb <dlwebb@canit.se>]

On Mon, 31 Jan 2005, John Lynch wrote:

> To the ATM listserv:
>
> Has anyone in this group ever used a Coronado Halpha
> filter with a Newtonian?  I'd like some advice about
> this, and am contemplating using the SolarMax
> 60mm/BF30
> with an 8" f/6.25 with faceplate.  Coronado advised
> that this is cumbersome and not advisable, and that I
> should just purchase there small dedicated solar
> telescope with filters already attached.  Any advice
> would be greatly appreciated.  Estimates for weights
> of the 60mm filter and BF30 would also be appreciated.
>
> John Lynch


Amazing no one else has answered yet, given the previous
interest. I am first curious what you are wanting more
exactly. Have you considered/compared a Baader type filter?
Do you need/want to be photometrically correct, or would
you like something cheap/simple to add to your existing
scope? Is your target the Sun, or something (almost)
infinitely smaller and more distant? An 8" F/6 Newt is a
tad too generic and general purpose for me to guess what
you're up to.

I think that once your question is a bit further evolved
some of the experts in here might pop up their heads and
offer suggestions.... that being said, I am not an expert.

Dominic-Luc Webb

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