Re: [Utah-astronomy] Clavius and friends
Patrick wrote:
I'm wondering if anyone out there might be interested in working with me to use the Andy refractor out at SPOC next year to try some lunar and planetary imaging
Yes. For lunar imaging, think negative projection to f/25. f/5.5 and f/9 are too low. Use high speed video capture at 25 fps to catch the still air with an IR band-pass filter. For the C-14, consider stopping down - not for seeing, but to get the exposure time up if f/25 and the IR band-pass filter don't work. - Clear Skies, Kurt
On 29 Dec 2009, at 22:53, Canopus56 wrote:
Patrick wrote:
I'm wondering if anyone out there might be interested in working with me to use the Andy refractor out at SPOC next year to try some lunar and planetary imaging
Yes. For lunar imaging, think negative projection to f/25. f/5.5 and f/9 are too low. Use high speed video capture at 25 fps to catch the still air with an IR band-pass filter. For the C-14, consider stopping down - not for seeing, but to get the exposure time up if f/25 and the IR band-pass filter don't work.
Glad to hear you and other folks are interested. The Andy is f/16.8. I'm not a big fan of barlows so maybe we could try the native 16.8 first but then try a barlow for comparison. Kurt, do you have a camera and computer that meets your specs or will we need to look around? patrick p.s. What I'd really like to try is to use the refractor to make a Daguerreotype...
participants (2)
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Canopus56 -
Patrick Wiggins