Observation by Martina McGovern: NGC2237/NGC2244 Rosette nebula - mosaic

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Martina McGovern


Martina McGovern


2022 Feb 10 - 22:00


2022 Feb 15 - 19:00



  • Sharpstar 100 QII, SkyWatcher HEQ5 PRO, ZWO ASIAir Pro, ZWO ASI294MC Pro, EAF & 60mm guide scope + ASI120MM mini & Optlong L-Pro Broadband filter. Plus, ZWO ASIAir Pro running the show

120sec Subs over 13nights, L-pro data with Darks, Flats & Dark flats. Camera settings were Gain mix of 100 & 120, cooled to T -10C. Guided image. Total integration time was 17hrs (9hrs Pane 1 and 8hrs Pane 2)


Near Cambridge city UK, Bortle approx 4

Target name

NGC2237 Rosette nebula


NGC2237/NGC2244 Rosette nebula - mosaic

About this image

This is my first ever mosaic - a two panel.

Imaged between 10th Dec21 – 10Feb22.

The Rosette nebula – known by NGC 2237 & NGC 2244(the open cluster inside the Rose)

It is a beautiful region in the sky, in the constellation of Monoceros. It can be found North east of the fantastic Orion constellation. The nebula and stars in the open cluster are about 5,000 light years from us – not that far away really :) It is about 130 light years in diameter.

I have wanted to image this Deep Sky Object since I started my Astro journey but needed to wait until I had a bit more experience under my belt – processing experience really :)


Processing; Deep sky stacker, PixInsight with final tweaks in Photoshop + Topaz DeNoise AI.

Clear skies all.


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