
An assortment of nebulae in Sagittarius, very close to the well-photographed Lagoon, thus sort of completing the Lagoon footprint, which made me come up with this nickname.
This is a narrowband (SII, H-alpha, OIII) plus RGB image. For rendering the NB data, I used the “Foraxx” palette described in The Coldest Nights blog along with other techniques. Worked rather well, a pure SHO approach would yield a very green image. Stars are color-calibrated RGB.
Emission and reflection nebulae in this field: IC 1274/1275/4684/4685, NGC 6559
The strange object below and right of NGC 6559 is the planetary nebula PN M 1-41
(RA 18 09 30.10, DEC -24 12 26.0).
More details at Astrobin.
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
2 panel mosaic, 70x R, 66x G, 68x B 60s, 65x Ha, 60x OIII, 66x SII 180s, mode 1, gain 56, offset 10, -5C, 20 flats, 30 darks, 50 bias
Total time: 46620s / 12h57
Data acquisition: IAS remote team / Martin Junius
Data calibration/integration: PixInsight WBPP
Image processing: PixInsight, BlurXTerminator, NoiseXTerminator, StarXTerminator, Lightroom
