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Hi Garth, It all really depends on your set-up & experience, , I have used a guidescope for last 5-6yrs with good effect, but not perfect ? Now im using a 10" newt with 1200mm Focal length on a Neq6 mount which requires more accurate guiding and having a seperate guidescope from the main imaging scope will often have 'flexture' between the two, This will cause small but annoying star trailing in images as the imaging scope will move/lean a smidge differenty than the guide scope! So Im looking at going Off axis soon as this will erradicate 95% if not 100% of flex issues, , Though there are some other considerations, eg, OAG need more sensitve guide camera, have less field for choosing stars, and need perfect space fittings to have both imaging camera & guide camera to both reach very sharp focus ? ?
If you can tell us what scope/s and mount you are using, this will go long way to have further advice !
Rgrds !
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