Yep, going only by the apparent size of it I would guess an eq3 equivalent or 4 at the most. Ok for visual work but a challenge for astrophotography. Might be possible if you get a RA drive, carefully polar aligning using the 8", or a short tube refractor, and piggybacking the camera and manually guiding with a reticle. The short tube, weighing less, would definately be better for this. Fun challenge though.
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