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Pages: 1 | 2 | (show all) Jure Atanackov member Reged: 05/04/10 Venus image 11h24m before transit       #5256072 - 06/05/12 12:28 PM Attachment (383 downloads) Edit   Reply   Quote Quick Reply   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 Edited by Jure Atanackov (06/05/12 12:29 PM) Post Extras:       bunyon Carpal Tunnel Reged: 10/23/10 Loc: Winston-Salem, NC Re: Venus image 11h24m before transit [Re: Jure Atanackov]       #5256077 - 06/05/12 12:31 PM Edit   Reply   Quote Quick Reply   Wow! Incredible. Post Extras:       chrisdx3 member Reged: 11/24/11 Loc: Columbus Oh Re: Venus image 11h24m before transit [Re: bunyon]       #5256096 - 06/05/12 12:41 PM Edit   Reply   Quote Quick Reply   neat! Post Extras:       Mike C scholastic sledgehammer Reged: 03/05/08 Loc: Cornwall, UK Re: Venus image 11h24m before transit [Re: bunyon]       #5256097 - 06/05/12 12:41 PM Edit   Reply   Quote Quick Reply   Amazing work, Jure! Very well done to capture that! Regards. Post Extras:       Steve OK professor emeritus Reged: 09/22/07 Loc: OKC, OK Re: Venus image 11h24m before transit [Re: Jure Atanackov]       #5256180 - 06/05/12 01:31 PM Edit   Reply   Quote Quick Reply   Great work! Really super. Post Extras:       CPellier sage Reged: 08/07/10 Re: Venus image 11h24m before transit [Re: Steve OK]       #5256204 - 06/05/12 01:49 PM Edit   Reply   Quote Quick Reply   The whole turn, beautiful... Post Extras:       Rutilus Pooh-Bah Reged: 12/17/10 Re: Venus image 11h24m before transit [Re: CPellier]       #5256291 - 06/05/12 02:37 PM Edit   Reply   Quote Quick Reply   Excellent, first class work. Post Extras:       Catapoman Pooh-Bah Reged: 06/06/03 Loc: VA Re: Venus image 11h24m before transit [Re: Jure Atanackov]       #5256375 - 06/05/12 03:23 PM Edit   Reply   Quote Quick Reply   Great image and timing, Jure!: Post Extras:       karlo scholastic sledgehammer Reged: 05/21/09 Loc: Yorkshire,UK, BLIGHTY !! Re: Venus image 11h24m before transit [Re: Catapoman]       #5256408 - 06/05/12 03:45 PM Edit   Reply   Quote Quick Reply   That is truly wonderful, an award winner for sure ! Well done ! Post Extras:       Mike B. Carpal Tunnel Reged: 10/24/05 Loc: Louisiana Re: Venus image 11h24m before transit [Re: karlo]       #5257055 - 06/05/12 10:51 PM Edit   Reply   Quote Quick Reply   Submit it to Spaceweather! Post Extras:       deSitter Still in Old School Reged: 12/09/04 Re: Venus image 11h24m before transit [Re: Mike B.]       #5257134 - 06/05/12 11:23 PM Edit   Reply   Quote Quick Reply   Absolutely fantastic. I'm speechless. -drl Post Extras:       Carol L Reged: 07/05/04 Loc: Tomahawk, WI 45N//89W Re: Venus image 11h24m before transit [Re: deSitter]       #5257209 - 06/05/12 11:54 PM Edit   Reply   Quote Quick Reply   Incredible shot - very lovely, too. Congratulations! Post Extras:       Greg K. Reged: 12/11/03 Loc: Clifton Park, NY Re: Venus image 11h24m before transit [Re: Carol L]       #5257229 - 06/06/12 12:08 AM Edit   Reply   Quote Quick Reply   That's insane! Post Extras:       tim53 Postmaster Reged: 12/17/04 Loc: Highland Park, CA Re: Venus image 11h24m before transit [Re: Greg K.]       #5257261 - 06/06/12 12:23 AM Edit   Reply   Quote Quick Reply   Gorgeous! Post Extras:       John Boudreau professor emeritus Reged: 04/06/08 Loc: Saugus, MA Re: Venus image 11h24m before transit [Re: Jure Atanackov]       #5257465 - 06/06/12 03:02 AM Edit   Reply   Quote Quick Reply   Superb! A truly impressive piece of work guys! Post Extras:       Jure Atanackov member Reged: 05/04/10 Re: Venus image 11h24m before transit [Re: John Boudreau]       #5257753 - 06/06/12 09:34 AM Edit   Reply   Quote Quick Reply   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 Edited by Jure Atanackov (06/06/12 11:22 AM) Post Extras:       brianb11213 Postmaster Reged: 02/25/09 Loc: 55.215N 6.554W Re: Venus image 11h24m before transit [Re: Jure Atanackov]       #5257952 - 06/06/12 10:58 AM Edit   Reply   Quote Quick Reply   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. Edited by brianb11213 (06/06/12 11:02 AM) Post Extras:       Grava T Pooh-Bah Reged: 06/18/08 Loc: Quebec, Canada Re: Venus image 11h24m before transit [Re: brianb11213]       #5258057 - 06/06/12 11:40 AM Edit   Reply   Quote Quick Reply   Very nice shot! Really amazing! Thank you. Post Extras:       mitovka professor emeritus Reged: 06/08/10 Loc: Slovakia, CE Re: Venus image 11h24m before transit [Re: Grava T]       #5258529 - 06/06/12 03:13 PM Edit   Reply   Quote Quick Reply   Great succes! Post Extras:       swalker Imaging Editor - Sky & Telescope Reged: 01/22/07 Loc: 42.9225°N, 71.2242°W Re: Venus image 11h24m before transit [Re: mitovka]       #5258539 - 06/06/12 03:20 PM Edit   Reply   Quote Quick Reply   Impressive feat! Post Extras:       Pages: 1 | 2 | (show all)

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