Quote:
Originally Posted by Paul Haese
Nice work Andrew, all the images look well captured and processed.
Have you considered using a 3x barlow? This will give you a larger image scale and the 9.25 can deliver the light you need to get high speeds.
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Thanks Paul, I'm already over-sampling the ASI224MC with the 2.5x PM which gives me an effective focal ratio around f/21, while the optimum focal ratio for the ASI224MC with its 3.75 micron pixel size is around f/19. According to the maths, I won't get any more resolution from a higher focal ratio if I tried a 3x Barlow especially since I would most likely get a higher magnification factor than 3 if I used it.