Celestial hemisphere:  Northern  ·  Constellation: Ursa Major (UMa)  ·  Contains:  M 101  ·  NGC 5447  ·  NGC 5449  ·  NGC 5450  ·  NGC 5451  ·  NGC 5453  ·  NGC 5455  ·  NGC 5457  ·  NGC 5461  ·  NGC 5462  ·  NGC 5471  ·  NGC 5477  ·  Pinwheel galaxy
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Pinwheel Galaxy (M101, LHaRGB), Dominik Weinbrenner
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Pinwheel Galaxy (M101, LHaRGB)

Getting plate-solving status, please wait...
Pinwheel Galaxy (M101, LHaRGB), Dominik Weinbrenner
Powered byPixInsight

Pinwheel Galaxy (M101, LHaRGB)

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Description

The last shot taken with my father's R200SS, it will retire to visual astronomy now.

This time I tried to get as much detail and sharpness as possible by reducing my L subexposure length down to 60s (I'm sky-limited anyway) and increase the sheer amount of total subs. In the end, I threw out roughly 40% of about 800 subs and kept only the best ones.

Sadly, my flat calibration frames did more harm than good in this case. I cannot say why they introduced so many problems, but I cropped most of it away though anyway.
Even though the scale at 1"/px is very much ideal with this setup, I drizzled the images to allow a tighter crop in the end.

I'm still not happy with the outcome, I hope the upcoming Esprit 120 will allow me to arrive at a result I am overall more happy with.

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