Now this is different.....

[Doc]

..... but is it practical.

A ISTAR Perseus AT 210mm Achromatic telescope OTA F8.8. Wow this scope looks very different.

Cloudy Nights Classifieds (CNC) - ISTAR – Perseus AT 210-9 Achromatic Telescope OTA – 8” Clear Aperture F/8.8 - Powered by PhotoPost Classifieds

[Jim!]

Looks more suited on the front of a tank! I did catch this from the website advert

"made of highest quality Magnesium Alloy"

Is that really necessary? Shame they painted it black, a golden scope would look great.

[ollypenrice]

Could be very interesting. Imaging has set punishing standards for colour correction which, while desirable for visual observing, are really not necessary on many objects. I have an oldish 6 inch Synta achromat worth next to nothing and I kid you not, it gives great views. I suspect the achro doublet may make a comeback.

Olly

[argonaut]

It's been quite a while since I posted I've been off doing different things. This is one of the different things. I bought the lens and cell from Ales at Istar Optical, It's the 6" f/10 Achro doublet. The rest of the OTA I made.

Ales is a real nice person and is very enthusiastic about his new equipment. I can see some exciting products coming along. I don't have any business connections with Ales. I just thought I had better mention that

It's been quite a build for me over the last couple of months with bad health and such. It was an urge I had

[LukeSkywatcher]

THAT is a beautiful scope (silver one). Not too keen on matt black colour of other scope.

[Doc]

Argonaut would it be possible to give a run down of your refractor build. I know it's on CN but quite a few people don't use it and it's a cracking read.

[Jim!]

Thats a cracking scope Argonaut, the tube looks like its milled

I'll have to search CN, do you use the same user name?

[argonaut]

Argonaut would it be possible to give a run down of your refractor build. I know it's on CN but quite a few people don't use it and it's a cracking read.

Well,if there is interest I could start a thread on the build?

[Doc]

Well,if there is interest I could start a thread on the build?

Yes please as I would love to know how it's done.

[AndyH]

Yes please, from me too.

Cheers,

Andy.

[Doc]

What mount is that on Argonaut I see the tripod is a G11?

[argonaut]

You're right Mick,it's the Losmandy G11.The mount is a Giro 3.

Had first light earlier on this evening.

[AndyH]

If I may ask?

What's the difference tween a Giro 3 and 2 ? Is it physically bigger?

Cheers,

Andy.

[argonaut]

Hi Andy,

The difference I beleive is in the bearings. The Giro 2 used some kind of alloy and the Giro 3 used a a low friction nylon with a special grease. The physical size is the same. 70 mm with a 30mm X12mm shoulder. A 60mm shoulder is also available.

I was a little surprised how it coped with a OTA and bits coming in at 55lbs. I couldn't lock the either axis,although I can remedy this.Balance is all important. Changing eyepieces had to be done carefully so as not to move the OTA.

[AndyH]

Ta.

Looked the same to my eye, but wasn't sure.

Andy.