Hello,
another test image. The debayerisation was improper in 16 bits (but perfect in 8-bit acquisition).
After this post (in French):
http://www.webastro.net/forum/showthread.php?t=129196&page=2
PIPP can properly debayer the raw images prior to stacking.
Nonetheless I post this preliminary test image because some may experience the same (fixable) problem in colorimetrics.
Only 5s exposures and unity gain!
Very bright sky in June here... Since the faint extensions of the nebula are concealed in the sky background, the comparison between 8 / 16 bits should be moderately relevant at this time.
My attempts to image DSO in RGB with the ASI120MM and a filter wheel were tedious and disappointing (at the contrary of planetary images w/ Winjupos), but the results with the ASI224MC are encouraging and extremely easy to obtain, especially in 8 bits (fast, efficient and simple).
Undebayered raw images are extremely clean. In addition, the sensor is nir-depleted. Since the bandpass is very wide, very decent luminance images are possible (I successfully stacked non-debayered, raw image). Apart from the number of photosites, This almost competes the E2V bandpass, but, this time, with no noise at all.
Comparisons proved that the 224 shows by far less noise than the IMX104 and the MT9M034.
Nicolas
