Hi Mike,
I just plugged both scopes data into CCDcalc from Wodaski. It shows BRC as 1.45arc seconds/pixel and the TEC180 1.47 arc seconds/pixel.
So yeah they are pretty similar. The main difference being F5 for the BRC and F7 for the TEC (which is still reasonably fast with these sensitive cameras).
The TEC of course does not have diffraction spikes which can be a bit strong with some BRC shots with the ML8300 camera and the APO should have better contrast and sharpness. Then again the BRC has about 44% more light grasp and has aperture. So pretty close I think. A bit too similar to each other.
The acid test will be when I image a galaxy soon or maybe Omega Centauri which I have already imaged with the BRC. I have some TEC shots of Omega but unfortunately high thin cloud came over and damaged some of the subs but they did look impressive.
Greg.
Quote:
Originally Posted by strongmanmike
Interesting to compare this TEC shot to the BRC shot of the same region as the FOV is almost identical, actually shouldn't they be identical? Have you cropped a bit from the TEC shot?
I am sure you are able to judge better with access to the raw full frame files and I know the BRC shot had LRGB added which would fatten the stars but to me the stars look quite a bit better edge to edge, more pinpoint and I am sure under careful comparison there is higher resolution across the board in the TEC shot..?
The F5 of the BRC must help a little especially for NB compared to the F7 of the TEC.... so what is your verdict so far then...?
You are churning out really good images like a sausage machine mate, we love it!
Mike
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