I dedicated an imaging session to NGC 7822, a star-forming complex in Cepheus rich with emission nebulae, dark dust lanes, and Bok globules. NGC 7822 is also known as the “Question Mark Nebula” because of its overall shape and it is sometimes overlooked compared to its more famous neighbors. At the heart of the nebula lies the young open cluster Berkeley 59, whose hot, massive stars illuminate and sculpt the surrounding gas clouds.
With just 3 hours of total integration (60 × 180 s subs), it was a relatively short session, but the results were very satisfying. For this first attempt I focused only on the bright core of NGC 7822, which fits nicely in the field of view of my scope and OSC setup. Capturing the entire nebula would require a mosaic – something I may plan in the future.
As usual, I ran my standard setup:
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Explore Scientific ED80CF refractor
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ZWO ASI533MC Pro cooled to -10 °C
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Optolong L-eXtreme dual-band filter
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Controlled through NINA on a Mele Quieter 4 mini PC
What made this session different was using the Gemini 2025 flat panel for the first time. It performed flawlessly. I configured NINA’s advanced sequencer so that once imaging was complete, the mount slewed to the home position, the flat panel switched on, flats were taken automatically, the camera warmed up, all devices disconnected, and finally I received a PushOver notification letting me know the night was done.
It felt amazing to wake up knowing everything had been handled without intervention. The only tasks left for me were to power down the gear, bring the scope and tripod back inside, and go back to sleep.
The data were later processed in PixInsight. I prepared two versions of the final image: one showing Berkeley 59 and the rich star field embedded in the nebula, and another starless version that enhances the view of the glowing hydrogen clouds and dark Bok globules. These two perspectives reveal the cosmic nursery of NGC 7822, and it’s amazing that such delicate structures can be captured with a small telescope even under a light-polluted sky.
This was another big step toward a fully automated workflow – and it made the whole experience even more enjoyable.
