IC5148 "Spare tyre" planetary nebula (Igor Chekalin)

Celestial hemisphere: Southern · Constellation: Grus (Gru) · Contains: IC 5148

Image of the day 09/08/2022

IC5148 "Spare tyre" planetary nebula, Igor Chekalin

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IC5148 "Spare tyre" planetary nebula

Image of the day 09/08/2022

Powered byPixInsight

IC5148 "Spare tyre" planetary nebula

Finally got around to processing this material. This nebula was filmed over many nights from October 2021 to early January 2022 when I hadn't switched to an off-axis guide yet, and the guider's fixture was flimsy not allowing really long subs. Therefore, I shot mainly with 3-minute sub-exposures even for narrowbands. Fixed that in January and made few 10 min oxygen frames then.

The image is color balanced bi-color composition of Ha+OIII+OIII with RGB stars. Was taken with TAL-250K (Klevtsov's system 10" reflector) during 31 night between 6.10.2021 and 3.01.2022, on my balcony in Brisbane (Bortle 7 city sky)

Total accumulation time ~50h (H-alpha 31h, OIII 17h, RGB 1h26m) with sub-exposures:
Ha: 615x3 min
OIII: 287x3 min + 15x10 min
R: 15x2 min
G: 14x2 min
B: 14x2 min

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Status	Basic success
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Astrometry.net job	6216874
PixInsight job	n/a
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Image of the day 09/08/2022

IC5148 "Spare tyre" planetary nebula

Image of the day 09/08/2022

IC5148 "Spare tyre" planetary nebula

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Image of the day 09/08/2022

IC5148 "Spare tyre" planetary nebula

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IC5148 "Spare tyre" planetary nebula

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