Celestial hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  IC 4263  ·  M 51  ·  NGC 5169  ·  NGC 5173  ·  NGC 5194  ·  NGC 5195  ·  NGC 5198  ·  Whirlpool galaxy
M51 with the ST80, Dan Phillips
M51 with the ST80
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M51 with the ST80

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Description

M51 from home (red zone), with the ST80. I stuck with the ridiculously short 15s exposures because

(1) sky noise still beat read noise @ ISO 1600,

(2) I wanted to test the new full-resolution electronic shutter mode in Magic Lantern, which maxes out at 15 seconds, and

(3) I'm a little disappointed in the unguided performance of the Star Adventurer, which at 400mm focal length doesn't give a 100% keeper rate even at 30 seconds, though I can push it to 1 minute with fair success.

120 x 15" manually stopped to f/9 for much reduced blue haloes in stars

460 x 15" at f/5 for galaxy

combined in GIMP

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Revisions

  • M51 with the ST80, Dan Phillips
    Original
  • Final
    M51 with the ST80, Dan Phillips
    B

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M51 with the ST80, Dan Phillips