Mostly bicolor composite image (HOO), with the SII blended into the R and G channels.The goal was to achieve a high resolution image, and some moments of very good seeing helped in this sense. Astroimager Diego Gravinese brought to my attention that many proplyds were visible, see
here (illustrated by Diego on a specially re-processed image of the Trapezium region by me).
For a high resolution version click
here
IMAGING DATA
Optical train: AP167FLZ + flattener
Mount: AP1100 CP4
Guiding: QHY5II-L, 60/230 guidescope.
Camera: QHY163M (-20°C)
Filters: Astrodon 2nd Gen 3nm H-alpha,OIII
Frames: 192x1-min and 29x5-min H-alpha, 100x1-min OIII, and 85x1-min SII, all binned 1x1
Processing: PI 1.8 + Canon DPP
Date: 2019-11-14, 16 & 19
Place: General Pacheco, Buenos Aires, Argentina
Seeing & transparency: variable/good (suburban skies)
