M51 (Christiaan Berger)

Celestial hemisphere: Northern · Constellation: Canes Venatici (CVn) · Contains: IC 4263 · M 51 · NGC 5169 · NGC 5194 · NGC 5195 · NGC 5198 · Whirlpool galaxy

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M51

Second revision ----

Reprocessed the images a different way. Found this interesting presentation of Tony Hallas.

https://www.youtube.com/watch?v=PZoCJBLAYEs

Also used only the images before the meredian flip.

22 x 300 sec

first revision ----

First try with new IDAS LPS D2 filter.

Really brilliant to see how dark each 5min exposure is, while the telescope was surrounded by backyardlights and street lights. But this causes vignetting and noise that make the post processing hard.

I also tried out automation software Backyard EOS, but after the meridian flip M51 was at the bottom instead of in the center. This wasn't good for stacking, and therefor I cropped the image like this.

Learned a lot and will do a new try soon at darker location.

total 35 exposures of 5min @ ISO800

Original
Final
B

Imaged with APT

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Distribution of astrophotographers

This table shows the number of distinct astrophotographers who have been assigned and IOTD/TP award compared to the total number of images awarded.
	Distinct awarded users	Total awarded images
Image of the day
Top picks
Top pick nominations

Distribution of subject types

This table shows the distribution of awards per subject type, compared to the popularity of images of that subject type.
	Image of the day	Top pick	Top pick nominations	Total submitted
Deep sky
Solar system
Extremely wide field
Star trails
Northern lights
Noctilucent clouds
Landscape
Artificial satellite

Distribution of data sources

This table shows the distribution of awards per data source, compared to the popularity of images acquired from that data source.
	Image of the day	Top pick	Top pick nominations	Total submitted
Backyard
Traveller
Own remote observatory
Amateur hosting facility
Public amaeteur data
Professional, scientific grade data
Mix of multiple sources
Other
Unknown

The “AstroBin Image of the Day and Top Picks”, or IOTD/TP, is a long-running system to promote beautiful, interesting, peculiar, or otherwise amazing astrophotographs, with a focus on technical excellence. Learn more.

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