Some old narrowband data of the Helix was sitting for quite a while on my hard disk. Recently I started to adopt the “Foraxx” palette described in The Coldest Nights blog and used this technique with the SHO data, but combined both the SHO Foraxx and Bicolor Foraxx results, with a bit of RGB mixed in, and added RGB stars. Hope that the result isn’t too bad. ;-)

See an older post for a “classic” rendering of NGC 7293.

More details at Astrobin (70 % crop).

IAS – Internationale Amateursternwarte e.V.– Hakos Observatory, Namibia
IAS remote telescope “Dieter”

Lacerta 12″ Newton f/4, ASA DDM85XL-A, QHY268M, Baader RGB SII Ha OIII 6.5 nm filters
Guiding with OAG and Lodestar X2
79x R, 70x G, 70x B 60s, 69x Ha, 67x OIII, 70x SII 180s, mode 1, gain 56, offset 10, -5C, 20 flats, 30 darks, 50 bias
Total time: 50220s / 13h57
Data acquisition: IAS remote team / Martin Junius
Data calibration/integration: PixInsight WBPP
Image processing: PixInsight, BlurXTerminator, NoiseXTerminator, StarXTerminator, Lightroom