M74 - Galaxy
in Pisces
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M74 - Galaxy in Pisces.
14.02.2002 (17:50 - 18:53 UT)
Resolution: 3.14 arcsec/pixel
Camera: Vesta 675SC + 0.6FR
Telescope: 8" F6 Orion Europa Newtonian
Result focal ratio: F3.6
Exposure: 37x32s (gain 100%), 25xDF
Seeing: lim.magnitude for naked eye 4.5,
temperature 1°C
Finally I succeeded to capture spiral arms in M74.
M74 is together with hypernova
SN2002ap Stars up to17.1 mag are visible.
The image was processedin grayscale to reveal
more details. Color full sized image you can see here. |
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Negative image for resolving
faint structures and stars.
Some objects are labeled.
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Here are some results
achieved by various post-processing. As source
were used 3 (RGB) FIT images exported by K3CCDTools.
FIT images were combined to color image. Then
Flatten Background command was used (because no
flat fields were applied in K3CCDTools). After
that the image was converted to grayscale and
further processed by MaximDL or Corel PhotoPaint. |
Corel PhotoPaint (Gaussian Blur, Adjust ToneCurve,
Unsharp Mask) |
Negative of the left image |
MaximDL (Histogram Levels),
Corel PhotoPaint (ToneCurve, Unsharp Mask) |
Negative of the left image |
Corel PhotoPaint (Gaussian Blur, AutoEqualize,
Unsharp Mask) |
Negative of the left image |
The photo from Digitized Sky Survey (hypernova SN2002ap
is not present here)
Click the
image to see the full size. |
Negative of the left image |
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Last Update:
14.11.2001
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