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Sol Robbins
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Reged: 12/01/03
Posts: 1985
Re: May 27 Venus Sketch new [Re: Tommy5]
      #1629683 - 05/28/07 08:55 AM

Thanks T,

Hope to see your sketch soon.

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S.R.


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Tommy5
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Reged: 03/28/04
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Re: Venus 05.04.07 new [Re: Sol Robbins]
      #1631249 - 05/29/07 02:22 AM Attachment (99 downloads)

Here is my sketch from last evening 5-27-07,some markings could be seen with a variable polarizer filter, but the markings were more clearly seen with a #47 filter,darker near the terminator but more clearly seen further then in past views,the terminator looked a bit illregular as well,this is my first attempt to scan a photo from my new scanner,seeing was unusually steady as a high pressire area moved in and settled over my home lol. .

Attachment

Edited by Tommy5 (05/29/07 02:33 AM)


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frank5817
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Reged: 06/13/06
Posts: 7212
Loc: Illinois
Re: Venus 05.04.07 new [Re: Tommy5]
      #1631486 - 05/29/07 09:00 AM

Tommy,
Nice drawing of Venus and the albedo features.
Frank

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Special Ed
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Reged: 05/18/03
Posts: 6339
Loc: Greenbrier Co., WV 38N, 80W
Re: May 27 Venus Sketch new [Re: Tommy5]
      #1631986 - 05/29/07 01:40 PM

JoeF,
Thanks for adding your Venus observation to this collection--the albedo features you saw are well rendered.

Sol and Tommy,
Your latest sketches show the albedo features extending closer to the limb than in your previous drawings. This is similiar to what I have viewed (when I had the chance). From your drawings and JoeF's, the gibbous phase appears to be dwindling.

Farm work and weather have prevented me from making any recent observations. The weather was bad over the holiday weekend and finally improved last night but I had to work until dark-thirty getting some things in the ground. I hope to observe again soon.

Keep up the good work, everyone.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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Sol Robbins
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Reged: 12/01/03
Posts: 1985
Re: May 27 Venus Sketch new [Re: Special Ed]
      #1632293 - 05/29/07 04:04 PM

T5,

Nice one! I guess seeing albedo features Venus is a bit easier this aparition.

Micheal Venus is shinking. I am not sure, but as Venus dwindles to its halfway point as it is now, I imagine that its disk will grow larger in apparent size when it starts to get past its halfway point.

--------------------
S.R.


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Tommy5
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Reged: 03/28/04
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Re: May 27 Venus Sketch new [Re: Sol Robbins]
      #1632615 - 05/29/07 07:12 PM

Thanks Frank,Micheal and Sol,it has been fun to compare and view sketches with you guys,frank, congrads on your sketch being on LPOD. Hope to see all of you guys sketches as Venus continues its path around the sun and jupiter rolls on towards opposition.

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Special Ed
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Reged: 05/18/03
Posts: 6339
Loc: Greenbrier Co., WV 38N, 80W
Re: May 30 Venus Sketch new [Re: Tommy5]
      #1633064 - 05/30/07 12:05 AM Attachment (88 downloads)

This observation tonight (8:20-9:20 PM local time 29 May) was my first telescopic look in 10 days. In that time, according to information from S&T, Venus has increased in apparent diameter slightly, going from ~19 arcseconds to ~21 arcseconds--not really enough for me to notice much difference.

What was quite noticeable was the change in the appearance of the phase. I was expecting it, thanks to the sketches posted here, but still interesting to see in real time. It looks like Venus will be down to 50% illumination very shortly.

The terminator appeared to turn in towards the dark hemisphere, unless my eyes were playing tricks on me. I tried my W47 filter again, but the disk was featureless with it, perhaps because of the very poor transparency, so I used the W80A.

The sketch was done with HB and 6B graphite pencils, a loaded stump, an eraser, and black ink. I'm happy to contribute another sketch to this thread.

Attachment

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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CarlosEH
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Reged: 01/19/05
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Loc: Pembroke Pines, Broward County...
Re: May 30 Venus Sketch new [Re: Special Ed]
      #1633200 - 05/30/07 04:12 AM

Michael and Tommy,

Excellent observations of Venus showing some interesting albedo features. Noting such detail over Venus is always a treat. Thank you for sharing them with us all.

Carlos

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frank5817
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Reged: 06/13/06
Posts: 7212
Loc: Illinois
Re: May 30 Venus Sketch new [Re: CarlosEH]
      #1633791 - 05/30/07 12:53 PM

Tommy,
Thank you much.

Michael,
Very nice observation and sketch. I could not see the venusian clouds through the earth bound clouds last evening.

Frank

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Tommy5
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Reged: 03/28/04
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Re: May 30 Venus Sketch new [Re: frank5817]
      #1635129 - 05/31/07 01:23 AM

very nice sketch micheal this season of venus watching is getting to be a a memorable one.

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rodelaet
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Reged: 04/28/06
Posts: 3185
Loc: 5056' N - 458' E (Belgium)
Re: May 30 Venus Sketch new [Re: CarlosEH]
      #1636116 - 05/31/07 03:56 PM

Indeed, excellent sketches from you all!!

--------------------
Rony

'The Casual Sky Observer's Guide.'

My Astronomical Sketches

My Binocular Sketches

Callibrate your Monitor with this little strip.



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Special Ed
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Reged: 05/18/03
Posts: 6339
Loc: Greenbrier Co., WV 38N, 80W
Re: June 7 Venus Sketch new [Re: rodelaet]
      #1650482 - 06/08/07 06:16 AM Attachment (81 downloads)

Hi,

I made this sketch Wednesday evening but didn't get a chance to post it until now. The view is still good if you catch it early. I tried several different filters on this observation but settled on the #80A. The sketch was done with an HB pencil and ink from an ep diagram of the different intensities.

Attachment

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery

Edited by Special Ed (06/08/07 06:32 AM)


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Sol Robbins
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Reged: 12/01/03
Posts: 1985
Re: June 7 Venus Sketch new [Re: Special Ed]
      #1650491 - 06/08/07 06:33 AM

Nice one Michael. Hopefully I'll have some luck in getting to view Venus soon.

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S.R.


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frank5817
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Reged: 06/13/06
Posts: 7212
Loc: Illinois
Re: June 7 Venus Sketch new [Re: Sol Robbins]
      #1650621 - 06/08/07 08:51 AM

Michael,
Excellent Venus sketch. I see you are still picking up some detail.
Frank

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My Gallery


Edited by frank5817 (06/08/07 11:07 PM)


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Tommy5
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Reged: 03/28/04
Posts: 2523
Loc: Chicagoland
Re: June 7 Venus Sketch new [Re: frank5817]
      #1651910 - 06/08/07 09:31 PM

very nice sketch good catch on the northern cusp cap, dark markings may become harder to see as venus gets closer and larger and goes into a crescent phase.

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Special Ed
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Reged: 05/18/03
Posts: 6339
Loc: Greenbrier Co., WV 38N, 80W
Re: June 7 Venus Sketch new [Re: Tommy5]
      #1651939 - 06/08/07 09:45 PM

Sol, Frank, and T5, thanks. Difficult at best, Venus observing is going to get harder by all accounts. It will still be favorably placed for another month, according to S&T, so watching the phase change and any other phenomena should be interesting. The observing tips from the BAA and ALPO Venus sections (as well as Fred Price's book) have been very helpful.

Btw, Venus will be just north of M44 on June 12 and 13--that should be nice.

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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frank5817
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Reged: 06/13/06
Posts: 7212
Loc: Illinois
Re: Venus 05.04.07 through 05.16.07 new [Re: Sol Robbins]
      #1652221 - 06/09/07 02:44 AM Attachment (90 downloads)

Good viewing conditions 1 hours before sunset gave me an opportunity to view and sketch Venus. I set up my telescope for evening and nightime viewing 2 hours before sunset. Venus was clearly visible and I attached a Wratten 47 violet filter to an eyepiece to view and sketch the albedo features of Venus if visible.

Equipment: 18" f/5 Dob., 6mm ortho eyepiece (381X)
Wratten 47 filter
Seeing: Pickering 8
Transparency: Excellent
Time: 0:15-:45 UT 6-9-2007
Sketching:
9"x12" black Strathmore Artagain paper
white and black pastel Conte' crayons, blending
stump, gum eraser, contrast and brightness
adjusted using Microsoft Paint.

Frank McCabe

Attachment

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Tommy5
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Reged: 03/28/04
Posts: 2523
Loc: Chicagoland
Re: Venus 05.04.07 through 05.16.07 new [Re: frank5817]
      #1653788 - 06/10/07 01:05 AM

Very nice sketch frank, you seem to be seeing some albedo features out near the limb and a few near the terminator,great sketch.

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Special Ed
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Reged: 05/18/03
Posts: 6339
Loc: Greenbrier Co., WV 38N, 80W
Re: Venus 05.04.07 through 05.16.07 new [Re: Tommy5]
      #1654286 - 06/10/07 11:32 AM Attachment (75 downloads)

Frank,

Great job on your sketch--I saw similiar shadings last night 24 hours after your observation. Like you, I set up early and started observing about 45 minutes before local sunset when Venus was at an altitude of ~50 deg. I found Venus by setting the declination and sweeping along the RA line while I looked through the finder.

I tried my W47 filter but my aperture is just too small. Experimenting with the W80A and W11 filters separately, I then tried stacking them and liked the view. Even though Venus was high, the seeing was below average (it got even worse later) but I managed this sketch. I used an HB pencil, a loaded stump, black ink, and an intensity diagram.

Attachment

--------------------

Michael Rosolina
Celestron CGE Pro 1400 f/11 SCT
1980 Orange Tube C8 f/10 SCT
4.25" f/4.2 Astroscan Reflector
50mm f/10 Galileoscope
40mm PST f/10
APM Germany HD 15x70 binoculars
Canon 12x36 IS II binoculars
Mark I Eyeball
My CN Gallery


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Tommy5
Carpal Tunnel


Reged: 03/28/04
Posts: 2523
Loc: Chicagoland
Re: Venus 05.04.07 through 05.16.07 new [Re: Special Ed]
      #1654377 - 06/10/07 12:28 PM

Great sketch micheal, the albedo features look similar to franks good job.

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