Hubble Optics Cellular Mirrors?

[COLOR="Purple"]Anyone have experience with HO mirrors? Their web site doesn't say what focal ratios they are offered in. I'd love an 18" f/4 cellular mirror but I'm not sure they can be made that "fast". I have an 18.75" f/5.22 cellular mirror but the long focal length greatly diminishes the observing experience for me (ladder).

The HO price for an 18" cellular is pretty good but I wonder what you get for the price.

Sooo...anyone have any experience with HO cellular mirrors?
Thanks!
Bill [/COLOR]

I believe the prices they used to quote was an extra $500 per half F ratio faster than F5. NOt sure what they are quoting now.

See Normand Fullum's web site for fast large fused mirror.

Lots of discussion has taken place her, on CN and I think Yahoo big dob ... but nobody seems to have star tested a large HO mirror.

I just moved up to 18" F4.5 from 16" F4.5 but I'm still looking for larger aperture at a reasonable price... and waiting to see what HO will deliver.

Love the aperture you are with ...

Dan

Dan

Hello Bill,
I don't usualy get invalve in forums but I just wanted to give you some info.
Last month I did a 21" Fused Glass mirror at F/3.75 with a superb result!! I do not use HO blank but the ones I am using are better because they have a 6 to 1 ratio for diameter/thickness.So if you want a fast mirror , send me an Email and I will give you a quote

Sincerely
Normand Fullum

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Hi bill I have had a Hubble Optics mirror for about a year now . it is a 16" F 4.8 . It is much better than I thought it would be for the price. They are also very good to deal with .

not yet tested this mirror it is a HO 14" f4.57 made of pyrex

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