[multiweb (Marc)]

Hi guys, here’s a quick 5x600s RGB test from my backyard on the Tarantula Nebula. That’s my first try at a longer FL. I usually image at 600-650mm. This one was at 1200mm and my image scale was 1.3 arcsec per pixel. I applied a slight deconvolution in CCD Stack to tighten the stars a bit. What I like about increasing the FL is that you get a better image scale and can start oversampling a bit, so deconvolution runs much better and you can dig a lot more details from the data acquired. The stars on the edge of the field are a little funny shaped and I had a little bit of flexure with the barlow sticking out.

I’m trying to work out the right spacing for my MPCC. It says that it should be 55mm +/-2mm from the CCD. I think I’m out by 3mm either way.
Would any of you guys know of system such as a “telescopic” or “helicoidal” adaptor for lack of a better term. Something that you could screw in and out with a lock nut to allow for a very precise range of spacing? I don’t know if this exists on the market. If not I’ll have to make one up.
Let me know. Thanks heaps.