PEMPro Data gathering
Have a few questions on best practices for PemPro data gathering.
1600GTO, early model (just had bearings replaced in RA/DEC gear boxes), Planewave CDK 17/unbinned image scale .631"/pixel/permanent setup
Is it best to gather data at 0 dec (about 55 degrees elevation), or higher (80 degrees) to minimize seeing effects?
If higher data gathering, calibrate here as well?
To minimize seeing effects, better to use a shorter exposure, say .25" and a longer delay between exposures, say 3" OR a longer exposure and longer delay (1" exposure/3" delay)?
When gathering data, I can watch the star in Maxim move quite a bit off of centroid in random directions. Some is of course real PE, the rest noise. I know the program can account for this to some extent, but this is a lot of noise and wonder if it is being represented in the final curve.
Generally get about 400 points for a PEC curve, more or less.
Mike J. Shade
Mike J. Shade Photography:
In War: Resolution
In Defeat: Defiance
In Victory: Magnanimity
In Peace: Goodwill
Sir Winston Churchill
Already, in the gathering dusk, a few of the stars are turning on their lights.
Vega, the brightest one, is now dropping towards the west. Can it be half
a year since I watched her April rising in the east? Low in the southwest
Antares blinks a sad farwell to fall...
Leslie Peltier, Starlight Nights
International Dark Sky Association: www.darksky.org