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Help requested for flat field rig

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Ed Wiley_WEY
Ed Wiley_WEY's picture
Help requested for flat field rig

I would like to set up a rig to take flats similar to that in Smith, Henden and Starkey (“Flat Field Calibrations for the AAVSO Photometric All Sky Survey (APASS)”) but with LEDs. The scope is an 80mm refractor I am set up for bright star work in my remote observatory. Filters are BVI, so the LEDs will have to be a mix that includes near-IR. (Commercial EL and light panels I have tried do not cover near-IR well, I had to buy a special-made light panel for the C11 with near-IR bulbs included.)

A couple of issues. (1) I need advice on specific mix of LEDs to purchase and the ratio of colors to cover 350-900 (or so) nm. (2) I could also use some direction on how to determine if my Pegasus Pocket Power box has enough juice to run the system, in short, someone who might help me evaluate my proposed setup in terms of power consumption. I am not much of an electrician.

Right now, the scope is fully operational as a remote system, but I would like to get away from sky flats. If you can help, let us discuss this off-forum.

Thanks, Ed

AAVSO 49 Bay State Rd. Cambridge, MA 02138 aavso@aavso.org 617-354-0484