2021年4月12日 · I was worried about highlights in the galaxy going past what I could easily recover in HDRMT if I tried to make the tidal tail and IFN obvious. The result was a …

2023年3月24日 · M 51 + IFN - posted in Experienced Deep Sky Imaging: The Whirlpool Galaxy, also known as Messier 51a, M51a, and NGC 5194, is an interacting grand-design spiral galaxy …

Hi all, "Deep" version of M51 galaxy, made over 8 nights with coronal sky during May 2020 (18/25). 20h+ for the luminance layer : some very faint IFN is visible on the stacked raws, but …

Here are three sketches of IFN near M51, the Whirlpool Galaxy, with a 6 inch, 13 inch and 25 inch. I can see more detailed IFN with the larger aperture; the wider scale IFN is visible in the …

Here's a recent 6.3hr LRGB of M81 that managed to pull out some of the IFN. It could use more data and Ha but helpful processing comments greatly...

Hi all, "Deep" version of M51 galaxy, made over 8 nights with coronal sky during May 2020 (18/25). 20h+ for the luminance layer : some very faint IFN is visible on the stacked raws, but …

2019年3月13日 · After what turned out to be a great astro-imaging night at Wim's @wimvb dark skies, north of Stockholm, I stacked the Luminance of 2 hours and 40 minutes of M51, taken …

2024年12月7日 · M51 is a pretty popular target amongst astrophotographers as it has some very distinctive spiral arms which were first discovered by William Parson in 1845, also making it …

2022年7月4日 · M51 and IFN - posted in Experienced Deep Sky Imaging: While I finish my image with some ultra deep Ha data with a bigger instrument, here you can see the widefield RGB …

A deep wide field view captured with a telephoto prime lens of 300mm, shows the blueish variable star Alkaid, from Ursa Major, shining close to a tiny blue snail lying at a distance of 31 million …