Quote:
Originally Posted by monoxide
looks good, ive been looking at these reducers for a while.
ill have to keep track of how it goes
cheers
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I think it works alright Tj. There's 20mm of travel approx and a rotating ring for orientation of your FOV. It's a big piece of glass and a bit bulky so you wouldn't put it on anything smaller than an ED80. The good thing is by the time I reach focus the focuser barrel is drawn out only 10mm so the focuser doesn't sag as it's mostly in. As a result I haven't had any flex (on 5min exp). I spaced the QHY8 with the same spacers I had for my MPCC as it's ~55mm. I was recommended 56mm.
I've attached a shot of a corner to show the difference. Previously the lack of focus was due to the field curvature of the ED80. The stars are more in focus across the whole field now. This the corner edge of the QHY8 sensor not a crop.