K3's Astronomy - Deep Sky
"When I consider your heavens, the work of your fingers, the moon and the stars which You have set in place, what is Man that You are mindful of him?" -- Psalm 8:3,4

M51 - The Whirlpool Galaxy (in Canes Venatici)

Click the image to see the full size picture (1.57"/pixel).
M51 - The Whirlpool Galaxy (combined photos from 24.05. and 25.05.)
Resolution: 2.36 arcsec/pixel
Camera: Vesta 675SC2 + 0.6FR
Telescope: 8" F6 Orion Europa Newtonian
Result focal ratio: F3.6
Exposure: 68x45s + 9x65s + 52x45s (gain 100%), AMP OFF, DF, FF
Seeing: soft wind

Very famous galaxy with its companion NGC5195. It's about 37millions light years distant.

Processing:
1, Images from 24.05. and 25.05. were combined in MaximDL Demo
2, Unsharp mask applied

The same image as above, but histogram stretching was applied.

Another galaxy - IC4278 (16mag) is also visible on the left side.
Move mouse pointer above the picture to see labels.

Click the image to see the full size picture (1.57"/pixel).
M51 - The Whirlpool Galaxy, 25.05.2003 (24.05.2003 23:52 - 01:01 UT)
Resolution: 2.36 arcsec/pixel
Camera: Vesta 675SC2 + 0.6FR
Telescope: 8" F6 Orion Europa Newtonian
Result focal ratio: F3.6
Exposure: 68x45s + 9x65s (gain 100%), AMP OFF, DF, FF
Seeing: very soft wind
Temperature: ~15C

Processing:
1, 77 frames (68x45s + 9x65s) were captured and summed in X2 mode in K3CCDTools
2, histogram stretching and gamma 1.20
3, resized to 2/3 of size + unsharp masking in Corel PhotoPaint


Click the image to see the full size picture (1.57"/pixel).
M51 - The Whirlpool Galaxy, 24.05.2003 (00:31 - 01:14 UT)
Resolution: 2.36 arcsec/pixel
Camera: Vesta 675SC2 + 0.6FR
Telescope: 8" F6 Orion Europa Newtonian
Result focal ratio: F3.6
Exposure: 52x45s (gain 100%), AMP OFF, 6xDF, FF
Seeing: very soft wind
Temperature: ~15C

Again I can confirm that good mount is half of good scope!
All 52 captured frames wer good for summation.

Processing:
1, 52 frames captured and summed in X2 mode in K3CCDTools
2, histogram stretching and gamma 1.20
3, resized to 2/3 of size in Corel PhotoPaint


Click the image to see the full size picture (1.57"/pixel).
The same AVI source as above, but higher gamma (1.50) was used in processing.
The same AVI source as above, gamma 1.20 and strong histogram stretching.


Click the image to see the full size picture (1.57"/pixel).

M51 - The Whirlpool Galaxy, 14.06.2002 (22:34 - 23:42 UT)
Resolution: 3.14 arcsec/pixel
Camera: Vesta 675SC2 + 0.6FR
Telescope: 8" F6 Orion Europa Newtonian
Result focal ratio: F3.6
Exposure: 72x30s (gain 100%), AMP OFF, 16xDF, FF
Seeing: lim.magnitude for naked eye 4.2, windy, foggy clouds
Temperature: 16C

1, Stacked with K3CCDTools, exported to FITS
2, Histogram + gamma factor 0.8 (MaximDL Demo)
3, Denoised by Neat Image

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Last Update: 25.05.2003