[Tamtarn]

We need some help in deciding on a guidescope.

We're using a Skywatcher 200 x 1000 Newt on an EQ6 Pro Synscan and will be using a Meade DSI Pro as a guide camera.

We don't want to get an ED 80 as we will be using the scope for guiding only NO IMAGING.

Our budget is $300-$350

Our question is what focal length and aperture will we need to use a DSI Pro

The options we have found within the price range so far are :-

1. Saxon/Skywatcher 70 x 500 f7 Refractor
(A member of IIS has used this as a guidescope and is very happy with it)

2. AOE 80 x 600 f7.5 Refractor OTA

3. Orion 80 x 400 f5 Short Tube Refractor OTA

4. Orion 100 x 600 f6 Refractor OTA

Any suggestions, advice or input on the scopes we have listed or any others you have used would be appreciated to help us make a choice.

Thanks in advance

D & B