PK 217+14.1

[Dunmunro]

This image was obtained over several nights from Feb 15 - 18: PK 217+14.1 45 x 5min subs (3hrs 45min) through a 10in F8 SCT (using a Starizona LF SCT reducer) and an ASI071MCPro camera, Meade LPI-GM advanced guide camera (gain 70), on a CEM60 mount. All aspects of image acquisition, centring, autofocus and OAG autoguiding, starting with the mount parked, was robotically controlled by Astroart-9 SP3. All processing with AA9 SP3.
Note: Very windy conditions resulted in only 45 usable subs from 78 obtained. I recommissioned my 36 year old Meade 10in F10 SCT to temporarily replace my 10in F6.3 SCT, pending having it's secondary mirror re-aluminized.

Processing history:
NCOMBINE= 45
HISTORY Deconvolution "Richardson Lucy 30 2 70 40"
HISTORY Histogram stretch: 65535 2101 16893 -2 0
HISTORY DDP: 95 20 2 50 50 1.37 40
HISTORY White balance: 4 -1 -1 -1 2 -1 -1 -1
HISTORY Multiscale Lowpass: 21 50 50 90
HISTORY Flip vertical
HISTORY Remove gradient adaptive sub.: 95
(sigma sum stacking plus flats and darks)