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Venus image 11h24m before transit

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#1 Jure Atanackov

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Posted 05 June 2012 - 11:28 AM

We imaged Venus today (June 5th) under very clear skies just past local noon (10:45 UT). The planet was only 44' from the Sun's edge and 0.015% illuminated. A 10-cm off-axis mask was used on an Orion Optics UK SPX 25-cm f/6.3 Newtonian, Astrodon UV filter and a Basler Ace ac640-100gm camera. Photo: Jure Atanackov, Rok Pucer, Matic Smrekar.

Clear skies!
Jure

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#2 bunyon

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Posted 05 June 2012 - 11:31 AM

Wow! Incredible.

#3 chrisdx3

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Posted 05 June 2012 - 11:41 AM

neat!

#4 Mike C

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Posted 05 June 2012 - 11:41 AM

Amazing work, Jure! Very well done to capture that!

Regards.

#5 Steve OK

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Posted 05 June 2012 - 12:31 PM

Great work! Really super.

#6 CPellier

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Posted 05 June 2012 - 12:49 PM

The whole turn, beautiful...

#7 Rutilus

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Posted 05 June 2012 - 01:37 PM

Excellent, first class work.

#8 Catapoman

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Posted 05 June 2012 - 02:23 PM

Great image and timing, Jure!: :bow:

#9 karlo

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Posted 05 June 2012 - 02:45 PM

That is truly wonderful, an award winner for sure !
Well done !

#10 Mike B.

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Posted 05 June 2012 - 09:51 PM

Submit it to Spaceweather!

#11 deSitter

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Posted 05 June 2012 - 10:23 PM

Absolutely fantastic. I'm speechless.

-drl

#12 Carol L

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Posted 05 June 2012 - 10:54 PM

Incredible shot - very lovely, too. Congratulations! :)

#13 Greg K.

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Posted 05 June 2012 - 11:08 PM

That's insane!

#14 tim53

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Posted 05 June 2012 - 11:23 PM

Gorgeous!

#15 John Boudreau

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Posted 06 June 2012 - 02:02 AM

Superb! A truly impressive piece of work guys!

:bow:

#16 Jure Atanackov

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Posted 06 June 2012 - 08:34 AM

Thanks for the kind comments everyone. It was a bit of a balancing act, positioning the off-axis mask so that the sunlight didn't hit the primary mirror (and that any that did then missed the focuser). But as Venus won't be so close to the Sun for another 8 years it was worth the effort (on June 3rd, 2020, 19h UT it will be at 14' from the Sun's limb and 0.003% illuminated).

Mike, the image was submitted to Spaceweather.com, it's (burried) in the Transit gallery.

We also planned a post-transit observation, but at T+8.5h the sky here is still too milky and the immediate vicinity of the Sun far too bright for any reasonable chance of success.
Clear skies!
Jure

#17 brianb11213

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Posted 06 June 2012 - 09:58 AM

Congratulations, this is the most amazing planetary image I've ever seen. IMHO it was absolutely insane to try, but then opinions are opinions and sanity is a moveable feast.

Just out of interest (and, if the answer is "insanity" I still want to hear it) why did you use the UV filter for this shot? I'd have thought the sky would be brighter in UV than in deep red / IR ... and the camera response is really falling off in the UV, meaning longer exposure times in worse seeing as well as less contrast with the sky background ... I managed to image Venus in full daylight with Wratten 29 until May 28th when I was starting to get too much unbaffled light for me to consider it safe, but I gave up on the UVenus filter about the end of April when the phase became small enough for cloud details to stop showing.

#18 Grava T

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Posted 06 June 2012 - 10:40 AM

Very nice shot! Really amazing! Thank you.

#19 mitovka

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Posted 06 June 2012 - 02:13 PM

Great succes!

#20 swalker

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Posted 06 June 2012 - 02:20 PM

Impressive feat!

#21 jshalpha

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Posted 06 June 2012 - 02:38 PM

Amazing shot.

Jim S.

#22 Yuri_18

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Posted 06 June 2012 - 04:10 PM

Superb!

#23 VikingRaider

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Posted 06 June 2012 - 05:27 PM

That is one of the coolest pictures I've ever seen!!! Fantastic!

#24 deSitter

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Posted 06 June 2012 - 08:02 PM

When I enhanced the contrast, details in Venus' atmosphere showed up. This is very significant.

-drl

(SEE ABOVE FOR ORIGINAL)

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#25 deSitter

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Posted 06 June 2012 - 08:29 PM

Maybe it's just an enhancement artifact. There are some on the right.

-drl






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