Celestial hemisphere:  Northern  ·  Constellation: Andromeda (And)  ·  Contains:  Great Nebula in Andromeda  ·  M 110  ·  M 31  ·  M 32  ·  NGC 205  ·  NGC 221  ·  NGC 224
Andromeda, Tyson
Andromeda
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Andromeda

Andromeda, Tyson
Andromeda
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Andromeda

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Description

Andromeda M31.

10/31/15

Sandstone Peak, Malibu

ISO 1600 5n.

11 x 120s subs stacked in DSS with only 3 x 120s dark frames.

Stretched in Photoshop CS2.

I am wondering why its so noisy. Things I probably could do better:

a. Take more dark frames.

b. Reduce ISO to 800, increase exposure time.

c. Did I stretch the image too much?

d. Can I use photoshop CS2 to reduce noise further? how?

I am open to comments and help. Thanks.

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Andromeda, Tyson