1004X EX-VIEW LONG EXPOSURE ASTRO CAMERA
MAFFEI 2
A comparison of exposure times and guiding accuracy
VIXEN VC200L with FL reducer 1250mm FL f6.3 Approx 1.5 arc sec per pixel
All images unguided. PEC trained at start of imaging run using Quick Cam autoguider
No dark frame or flat field correction. Aligned and stacked using K3CCDtools
8 (out of 9) 1min exposure frames
10 (out of 10) 2min exposures
4(out of 5) 5min exposures
All frames stacked without alignment.
Main drift due to polar alignment errors
residual PE approx 6 arc sec
