IC434 HSO with RGB stars - Optolong 3nm testshot (Thorsten Glebe)

Celestial hemisphere: Southern · Constellation: Orion (Ori) · Contains: 48 Ori · 50 Ori) · Flame Nebula · IC 431 · IC 432 · IC 434 · IC 435 · NGC 2023 · NGC 2024 · Orion B · The star Alnitak (ζ Ori · The star σ Ori

IC434 HSO with RGB stars - Optolong 3nm testshot, Thorsten Glebe

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IC434 HSO with RGB stars - Optolong 3nm testshot

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IC434 HSO with RGB stars - Optolong 3nm testshot

This is my first try with the Optolong SHO 3nm filters which I purchased recently. Due to weather conditions I could only collect very little data and image processing became a challenge. While the Halpha and SII filter performed good, Alnitak produced a bright halo and some nasty reflections in OIII.

Luckily I was able to attenuate them in PI with the help of DBE and a GAME mask. Nevertheless I might avoid bright stars with these filters in future.
Marginalia: I could verify that the Baader RGB CCD filter are parfocal to the Optolong RGB filter (which I expected from the specs - both are 2mm thick).

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IC434 HSO with RGB stars - Optolong 3nm testshot

IC434 HSO with RGB stars - Optolong 3nm testshot

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IC434 HSO with RGB stars - Optolong 3nm testshot

IC434 HSO with RGB stars - Optolong 3nm testshot

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