Rosette nebula, Ulli_K

Rosette nebula

Rosette nebula, Ulli_K

Rosette nebula

Equipment

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Acquisition details

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Description

First image with MGEN autoguiding. Focus not optimum on some frames due to focus shift during the night. Re-focussing every 15 images (once per hour)

Dithering during aquisition, NO Darks but Flats and Bias frames

Comments

Revisions

  • Rosette nebula, Ulli_K
    Original
  • Rosette nebula, Ulli_K
    B
  • Final
    Rosette nebula, Ulli_K
    C

B

Description: Previous version with unguided short exposures

Uploaded: ...

C

Description: Reduced background using a range mask and colour saturation and correction

Uploaded: ...

Histogram

Rosette nebula, Ulli_K

In these public groups

Takahashi Refractors
Imaged with APT

In these collections

NGC & IC objects