Celestial hemisphere:  Northern  ·  Constellation: Pegasus (Peg)  ·  Contains:  NGC 7331  ·  NGC 7335  ·  NGC 7337
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NGC7331 at 0.5"/pixel from red zone, Alex Varakin
NGC7331 at 0.5"/pixel from red zone
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NGC7331 at 0.5"/pixel from red zone

Getting plate-solving status, please wait...
NGC7331 at 0.5"/pixel from red zone, Alex Varakin
NGC7331 at 0.5"/pixel from red zone
Powered byPixInsight

NGC7331 at 0.5"/pixel from red zone

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Description

NGC7331 is one of my favorite objects. I imaged it several times from darker places but with smaller telescopes. This image was taken with 10" GSO RC from my backyard, 20 miles from NYC. Imaging galaxies from light polluted skies is not easy and requires perfectly matching flats and even after that, very careful background modeling is needed in PixInsight. Keep in mind that default options of PI in DBE tool will not be able to handle complex gradients. Only if you set smoothing factor to 0 and tolerance to at least 2, it is possible to get rid of all gradients and dust motes that were not removed by flats.

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NGC7331 at 0.5"/pixel from red zone, Alex Varakin

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Suburban Astrophotography