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, Christiaan Berger
M51
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M51

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Description

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

Comments

Revisions

  • M51, Christiaan Berger
    Original
  • Final
    M51, Christiaan Berger
    B

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M51, Christiaan Berger

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