I received this a while ago and then it took a while to sort out the adapters needed to attach my camera and filter wheel. It's all working now, perhaps a tiny amount of adjustment still to do.
First light image is the famous Horsehead Nebula. Most of the data was well under 2 arc secs FWHM and a few around 1.32 arc secs which is the tightest data I have ever gotten. I out it down to the resolution of the scope and the good seeing I get down here at Sussex Inlet on the south coast of NSW (the ocean is only about 3 kms from me).
38 x 5 minute exposures. Bit of reflection happening from the filters. These filters are my earlier Astrodons as my other filter wheel needs the USB port replaced. It has the series 2 non reflecting filters. I expect those reflections to go once the correct filters are used.
Manually focused and piggy backing on my CDK17. Its 110mm aperture F6 native and with the tri compressor/corrector it gives F5 as used here.
Virtually no vignetting, I did not use darks, bias or flats. Subexposures were dithered.
I'll be adding colour to this soon.
Very happy with the scope. Check out the crop - can you believe that was taken with a 4 inch refractor?
https://pbase.com/image/175186620/large
https://pbase.com/gregbradley/image/175186630/original CROP