I'm now testing the Ceravolo 300 Astrograph at f/9 (2700mm focal length). We had a brief spell of clearish weather on Friday night so I grabbed some Ha subs of M8 and got about an hour's worth which weren't too badly affected by the thin (and thick) clouds that kept rolling through. Seeing was pretty ordinary as well. Still, at least it wasn't raining like the rest of the new moon weekend here
The first image compares a small crop containing the Hourglass Nebula with a Hubble image. I'm pretty happy with the result, especially considering the conditions. The body of the Hourglass is only about 25 x 15 arcsec. I've seen this same comparison done before by others, most notably Rolf Olsen, so thanks for the idea!
The second image is only slightly cropped from the full field of my Alta U16M camera at this FL. I'd like to get some more data, including colour, if the skies ever clear.
Thanks for looking...
Cheers,
Rick.