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Pete Presland

Venus with Baader UV filter, showing rotation over 2 days

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Venus is now at a very respectable altitude, plus some lovely clear skies. Perfect conditions (hopefully) to begin imaging it again.

Both images with Celestron C9.25, Asi290mm, Televue x1.8 Barlow and Baader UV filter. 25,000 frames captured, stacked 10%. Last image is with a Astronomik 807 filter.

Some nice detail visible on both days, particularly Saturday afternoon. It looks clearly like rotation visible to me over the 2 days? 

 

Saturday 18.01.2020 Baader UV filter

1489826294_2020_01_1816.18UVfilterCS2.png.b26e2ca580926e80a34bb1f846e90d4c.png 

Sunday 19.01.2020 Baader UV filter

653175182_2020_01_1915.52UVfilterCS2.png.e39f2bb408374d91a226825d8ccc4c5c.png

Sunday 19.01.2020 Astronomik 807 filter

92217535_2020-01-19-1629_3-807proplanet-4_grad7_ap1copy.png.b4b351a35ebb5622928ca75721e3fdfb.png

 

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Those look excellent.  I'm not sure the 807 filter is very giving, but the detail from the Baader UV is amazing.

James

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9 hours ago, JamesF said:

Those look excellent.  I'm not sure the 807 filter is very giving, but the detail from the Baader UV is amazing.

James

The only reason used it was because my 742 was in my filter wheel, just a bit lazy 🙂

The 807 is normally saved for really poor conditions 

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Very nice! Gret detail with the Baader UV. Definitely see the rotation. 

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It definitely moves but at 243 days one rotation maybe it is just the clouds what do. Excellent picture, I'm rather envious 🙂.

NV

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Nice captures. I have one of those Venus UV filters which I'm looking forward to trying out over the next few months.

BTW, although Venus rotates once every 243 days, the clouds circle the planet every 4 days so you can see changes over a relatively short period.

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I knew the clouds rotated quickly,  I thought it was around 9 days. 4 days though would explain the big difference in the 2 images.

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