土星 ALPO-Japan Latest
Saturn Image 2009/05/06(UT)
瀧本郁夫
Jose Antonio Soldevilla,Mike Salway,Jean Jacques Poupeau,Gerald Stelmack
I.Takimoto,J.A.Soldevilla,M.Salway,J.J.Poupeau,G.Stelmack
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Ikuo Takimoto (310mm Newtonian) |
コメント：昼前まで雨が降っていたが、夕方近くになって晴れ間が出た。
しかし、土星を見始めると雲がまた広がり、この１枚のみ画像
が取得できた。
[Ayauta-gun Kagawa-Prefecture Japan]
≪香川県 綾歌郡 瀧本郁夫≫
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Jose Antonio Soldevilla(Newton 250mm) |
[Jose Antonio Soldevilla Canyelles-Barcelona-Spain]
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Mike Salway(304mm newton)
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On Wednesday night I captured Saturn in above average seeing - the second
time that week! When I’d finished processing the images,I noticed a faint
Moon near the edge of Saturn,and a dark feature just under the ring plane.
When blinking between the two images,I saw that the feature had moved,so I
check Starry Night Pro planetarium software and found that the small Moon
was Rhea and the dark spot on Saturn’s disc was Rhea’s shadow.
You can see the animation of the two frames below,as well as the 2 colour
images.
The difference in brightness between the two red channel images is due to
the capture settings. In the first image,I had gamma at 110 and in the
second,120. The blue channel was so faint,I bumped up the gamma to capture
all 3 channels at 15fps rather than dropping blue back to 7.5fps.
[Mike Salway Central Coast,NSW Australia]
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Jean Jacques Poupeau (350mm Cassegrain) |
[Jean Jacques Poupeau : Pecqueuse France]
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Gerald Stelmack(235 mm SC) |
CM1=212 CM2=21.6 CM3=159.8
Mag = 0.8 Dia = 18.8" C9.25 (235 mm) DMK 21AF04.AS
Astronomik LRGB Type 2 Seeing: 5/10
[G.Stelmack : Canada]
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