I got a nice white-light view of the sun in Mat's Dob this morning (thanks Mat, sorry I missed lunch!), so this afternoon I set-up in my own backyard. I finally got the binoviewer to focus with the Coronado PST! I used the thread-on 2X relay Barlow that came with it, and stacked that on top of a 2.8X Barlow. The scope would just reach focus. As I suspected, the magnification was too high, so I also used 0.5X focal reducers on each of the 40mm Plossls I used. The final magnification was still on the high side for the seeing this afternoon, which was really soft due to thermal currents rising from the ground as well as the breeze. I'll post a link to a photo of my setup later, once I upload the pic to Photobucket. The biggest problem with a binoviewer setup like this in daylight is the tiny pupil opening of the human iris. Combine that with a tiny exit pupil from the binoviewer, ridiculously long eye relief due to the Barlows and long FL eyepieces, and getting your head in just the right position is a huge PITA. The seeing was too poor for any acuity gains from stereo vision to be realized. Also at higher powers, prominence visibility decreases. Another problem with this kluge setup is just too much glass in the optical train, for such a small objective. I'm sure I lost a sizable fraction of my throughput to absorption. It would be nice to have about a 6-inch aperture H-a scope. So I'll probably not use the binoviewer setup on the sun in H-a very much unless the seeing is superb. Today the best views with the PST were with 9mm and 7mm ortho eyepieces used alone. There is a pretty good-sized, though not bright, prominence on the western limb, and a smaller but brighter one on the eastern limb, with a huge sunspot complex right near the limb. Many smaller prominences scattered around the limb, and several flocculi seen on the solar disk. I watched for about 90 minutes but saw not a hint of a flare. I also set up my C5 with a glass TO filter, but was surprised to see it badly out-of-collimation so only low powers could be used. I had collimated it about a year ago and hadn't used it since so I'm wondering what happened. Combined with the poor seeing, I quickly put the little Celestron back in the box with a note to re-collimate it. Should have tried the C6 instead. It still has that "new telescope smell". I also had a problem getting good balance with the C5 and binoviewer combination on the little GEM that I was using today. There's a pair of wild mallards that have decided to drop-in every day, and are pretty tame birds. I feed them stale bread and they walk right up to me now that they know I'm harmless. The down side is that I have to hose-off the patio before setting up the scope. They hung-out a few feet away all afternoon while I observed, no doubt waiting for the next handout. They'll disappear soon when the female decides it's time to raise a family back at Decker Lake.