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Solar Refractor 228 F8 Truss Tube

Posted: Sun Oct 06, 2019 8:00 pm
by sulcis2000
Hi all

I'm selling my solar refractor truss tube (228mm F8) with internal 110 Baader D-Erf and 3" Focuser TS-Optic with motofocus.
Weight about 22 kg
Length about 180 cm
I'm in Sardinia (Italy)
€ 4.800

Following pictures show the ota and what I've obtained with this great solar refractor.

Best Regards

Alessandro

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Re: Solar Refractor 228 F8 Truss Tube

Posted: Mon Oct 07, 2019 4:49 am
by marktownley
Good luck with the sale Ale!

Re: Solar Refractor 228 F8 Truss Tube

Posted: Tue Jan 21, 2020 2:50 pm
by dragracingdan
Still for sale?

Re: Solar Refractor 228 F8 Truss Tube

Posted: Sun Jan 26, 2020 6:21 am
by astrodog
Is the objective from Istar? Is it one of their lenses specifically used for h-alpha?

Telescope still available?

Chris

Re: Solar Refractor 228 F8 Truss Tube

Posted: Mon Mar 02, 2020 9:50 pm
by sulcis2000
Yes it is still available

Alessandro

Re: Solar Refractor 228 F8 Truss Tube

Posted: Sun Mar 08, 2020 6:09 pm
by sulcis2000
Price reduced to 4500 €
If you are interested I can add my Daystar Quark Chromosphere version

Re: Solar Refractor 228 F8 Truss Tube

Posted: Wed Mar 25, 2020 5:02 am
by DeepSolar64
Alessandro,
What a magnificent instrument. I am certainly impressed. It makes my Coronado SolarMax II 60 look very much like a beginners instrument. The resolution and image scale of your pictures are incredible. Among the best I have seen outside of a professional solar observatory. I hope you have been able to find a way to keep it and not have to sell it. I certainly would love to see more future work of yours using this instrument.

Is the objective lens an achromat or a singlet lens? Ha solar uses such a narrow band that a well figured singlet should work fine. Chromatic aberration shouldn't be an issue. But for full spectrum nighttime viewing that would be a big issue. Without being at least achromatic, chromatic aberration would be horrible.

I think only Lunt sells solar scopes commercially in sizes comparable to this. I think by special order only. They have a 230mm and a truss 300mm.

James

Re: Solar Refractor 228 F8 Truss Tube

Posted: Mon Mar 30, 2020 8:18 pm
by sulcis2000
Hi James.
The objective lens is an acromatic.
I'd like to keep it but I'm using it rarely and this is a pity.

Alessandro

Re: Solar Refractor 228 F8 Truss Tube

Posted: Wed Apr 01, 2020 5:27 am
by DeepSolar64
Alessandro,
It is really an awesome and unique instrument. Is the reason you don't use it much because of it's size? Many people will use a small grab-and-go scope far more than a big instrument. My smaller scopes certainly see more use than my bigger ones. A fixed permanent observatory will often remedy this though. I just wish I had the cash to go that route.

James

Re: Solar Refractor 228 F8 Truss Tube

Posted: Wed Apr 01, 2020 9:24 am
by sulcis2000
The ota is about 1,90 mt long and is weight is about 22 kilos
I'd like have an other roll off observatory (I've one in which there is a C14HD edge & 10Micron GM2000 HPSII) but it isn't possible because of my future wife :lol:

Alessandro

Re: Solar Refractor 228 F8 Truss Tube

Posted: Wed Apr 01, 2020 6:36 pm
by DeepSolar64
I know what you mean Alessandro! lol