Thanks Tyler! What do you think about using the RFT for imaging? I'm pretty sure I'll need to use my coma corrector, but I'm not sure about the uncorrected color of an achromat on a CMOS or CCD chip. It won't be an issue with narrowband imaging of course, but what about with a color camera? Would a V-block filter do any good? It would probably only be a problem with objects emitting a broad spectrum such as galaxies and star clusters. Emission nebulae won't pose any difficulties. I've used short-focus doublet refractors for astrophotography in the past, but that was emulsion photography, not digital imaging. That wide field is just begging me to try it. On Tue, Feb 12, 2013 at 3:09 PM, Tyler Allred <tyler@allred-astro.com>wrote:
That looks awesome Chuck! Tyler