Good for a guide scope?

[cfpendock]

I saw this on ebay and I thought it might make a guide scope for an f10 CPC. Apparently it is a "Europa" 90mm. Any comments on if it would be suitable would be welcome.

http://www.ebay.co.uk/itm/90mm-astronomical-refractor-telescope-with-tripod-on-equatorial-mount-/130832469467?pt=UK_Photography_Telescopes&hash=item1e76390ddb

Chris

[Freddie]

It's quite big so will add a lot of weight and is about twice as long as your scope. Also with high FR you may not many guide stars on the guide cam chip due to FOV and slow speed. Not the best really.

[cfpendock]

Thanks Freddie. I suspected as much, but was attracted by the (present) price.... You are providing me with a lot of very useful information!

Chris

[ollypenrice]

I agree. You'd need it in guide rings which are a) absurdly expensive and flexure prone. Better to go for an ST80, though for an SCT you would be far, far better off with an OAG.

Olly