NGC 6852

Object: NGC 6852, planetary nebula in Aquila, 12.6m, 28" diameter.

Subimages:12x300s (1 hrs) combined using SD Mask. FWHM 3.7"-4.1" input, 4" output
Calibration: Bias and darks only.
Scope: C11XLT with RLS65 reducer, EFL=1981mm (f/7 effective)
Mount: Losmandy G11 with Gemini L4
Camera: ST7EI (0.94"/pixel) set to -20C oriented at 2d49' (N up, E left)
Guiding: SX716 camera on a Taurus Tracker III OAG. Exposure time 1 sec.
Acquisition and Processing: MaxIm DL/CCD v4.5
Imaged on: Oct. 8, 2006

L-R deconvolution: Auto bgd and noise settings, PSF gaussian radius=1.5, 6 iterations. Resulting FWHM=2.8"
Kernel Filter to smooth out bgd mottling from LR: low pass more, pixel range 0-1825, Reduce radius=2, Feather = 5