April 2009 - Utah-Astronomy - mailman.xmission.com

Joe's UFO
by Stephen Peterson 17 Apr '09

17 Apr '09

Joe, Image might be fun to analyze by doing some calculations. Do you recall lens focal length and aperture? You were probably focused at infinity. Aperture used for image (full open or 1 stop down)? I presume the "overall view" is a more or less full frame print from 35 mm format, any cropping when you did the digital copy? You say the camera was probably pointing SSE toward Moab. Any other info would be helpful. Steve

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Re: [Utah-astronomy] college student needs 8in f6
by Wayne Sumner 17 Apr '09

17 Apr '09

Hi Ron, The only mirror I have right now is a 6" f8. If that would do, I'd be willing to sell it for $80. Wayne A. Sumner Math/Physics/Astronomy/Engineering Boy's Tennis Coach Northridge High School Davis School District (801) 402-8610 >>> "RON VANDERHULE" <deepsky100(a)msn.com> 04/16/09 11:30 PM >>> Hi all, Prof. Sohl asked me to help one of his students build a scope for a finals project. We have been working on it but the mirror he ordered turned out to be a 8 in f/4 that is spherical not parabolised, bad coatings, and 1/2 inch thick from an outfit called Sylvan on e-bay. He is returning it for a refund. What we need is an 8in f/6 and finding one within his budget parameters has been difficult. So I am putting a feeler out to the local astro community hoping someone has one of these mirrors collecting dust that they could sell for about $80.00 or $100.00. If you have some decent eyepieces and focuser let me know also. We can get some GSOs' and a plastic r&p but if there is something better locally great. Thanks ahead of time for your help. Ron Vanderhule _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com

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Re: [Utah-astronomy] More 3D
by Jim Gibson 17 Apr '09

17 Apr '09

LOL, Many of you describe just what my wife said when I tried to get her to see in 3D. She said, “My eyes have a head ache.” I had her focus on the tip of her finger about 6 – 8 inches away with the image right behind on the screen about 2 feet away and she got it, then lowered her finger. I am pretty sure it was her index finger anyway :>) I guess the wall-eye method is to just get your eyes parallel as if you had a 1000 yard stare with the images fairly close. I tried moving my head back and forth using that method and I could only get part of the image to come into view. Some people do better with that method, though. Their eyes don’t get a head ache…hehe. Jim --- On Fri, 4/17/09, Chuck Hards <chuck.hards(a)gmail.com> wrote: From: Chuck Hards <chuck.hards(a)gmail.com> Subject: Re: [Utah-astronomy] More 3D To: "Utah Astronomy" <utah-astronomy(a)mailman.xmission.com> Date: Friday, April 17, 2009, 12:17 AM The "wall-eyed" method? LOL! Most people who can't do the crossed-eyes method just can't seem to make one image overlap the other with crossed-eyes. Tilting the head is often needed to establish registration. Crossing the eyes too far is another common mistake. If you can focus on an object about six or seven inches in front of your face without too much difficulty, you should be able to use the crossed-eye method. Your eyes don't cross much more than they normally do when looking at something half a foot away. On Fri, Apr 17, 2009 at 12:10 AM, Joe Bauman <josephmbauman(a)yahoo.com>wrote: > There's a method that's the opposite of the cross-eyed style, and it works > too. That's the type I can manage. -- Joe > > _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com

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Re: [Utah-astronomy] More 3D
by Howard Jackman 17 Apr '09

17 Apr '09

LOL Patrick! I love Stereo pairs, I've gotten it down to about 3 seconds to get them to focus, and my whole head hurts! But what great views.... If anyone's interested in terrestial 3D photography you can link two Canon point&shoots and run a script using CHDK to take some cool action 3D pictures. There are some great examples on the web http://stereo.jpn.org/eng/sdm/index.htm If I wasn't saving up for a DSLR I'd pick up another A720IS and try it. Thanks for the links to such great 3D images Howard --- On Thu, 4/16/09, Patrick Wiggins <paw(a)wirelessbeehive.com> wrote: From: Patrick Wiggins <paw(a)wirelessbeehive.com> Subject: Re: [Utah-astronomy] More 3D To: "Utah Astronomy" <utah-astronomy(a)mailman.xmission.com> Date: Thursday, April 16, 2009, 11:22 PM Oh my Goddess, it actually works! I've tried this cross eyed stuff many times before and it's never worked. And, alas, I was not able to get it to work with the comet shots. But then I tried the Moon and it jumped right out at me. Same for the nebulae shots. Wild! I can't say that it was comfortable (my left eye feels like I pulled a muscle) but it was still a fun experiment. patrick On 16 Apr 2009, at 11:53, Jim Gibson wrote: > Chuck, > This guy specializes in 3D images. Here is a cool one of the moon in 3D. > http://3.bp.blogspot.com/_9HcYqbvUc4s/SdIcjcHpGCI/AAAAAAAACl4/JHElNuZ95_M/s… > > English is not his first language, but I have no complaints there as he is perfectly understandable. He says: > Unlike many Deep sky objects, the Moon can be seen with enough parallax to form a real stereo pair. There is two ways to do it. First you take two pictures from other sides of earth at the same time and there will be some minor parallax. Secondly the libration of the Moon can be used for that, you just have to wait a longish time to have a same phase of the Moon but with differen libration amount. > > Jim _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com

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Re: [Utah-astronomy] More 3D
by Joe Bauman 17 Apr '09

17 Apr '09

Yep, I always do the wall-eye method. If I try the cross-eye method it goes out of focus and I feel a headache coming on. -- Joe --- On Fri, 4/17/09, Chuck Hards <chuck.hards(a)gmail.com> wrote: From: Chuck Hards <chuck.hards(a)gmail.com> Subject: Re: [Utah-astronomy] More 3D To: "Utah Astronomy" <utah-astronomy(a)mailman.xmission.com> Date: Friday, April 17, 2009, 12:17 AM The "wall-eyed" method? LOL! Most people who can't do the crossed-eyes method just can't seem to make one image overlap the other with crossed-eyes. Tilting the head is often needed to establish registration. Crossing the eyes too far is another common mistake. If you can focus on an object about six or seven inches in front of your face without too much difficulty, you should be able to use the crossed-eye method. Your eyes don't cross much more than they normally do when looking at something half a foot away. On Fri, Apr 17, 2009 at 12:10 AM, Joe Bauman <josephmbauman(a)yahoo.com>wrote: > There's a method that's the opposite of the cross-eyed style, and it works > too. That's the type I can manage. -- Joe > > _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com

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Re: [Utah-astronomy] More 3D
by Joe Bauman 17 Apr '09

17 Apr '09

There's a method that's the opposite of the cross-eyed style, and it works too. That's the type I can manage. -- Joe --- On Thu, 4/16/09, Patrick Wiggins <paw(a)wirelessbeehive.com> wrote: From: Patrick Wiggins <paw(a)wirelessbeehive.com> Subject: Re: [Utah-astronomy] More 3D To: "Utah Astronomy" <utah-astronomy(a)mailman.xmission.com> Date: Thursday, April 16, 2009, 11:22 PM Oh my Goddess, it actually works! I've tried this cross eyed stuff many times before and it's never worked. And, alas, I was not able to get it to work with the comet shots. But then I tried the Moon and it jumped right out at me. Same for the nebulae shots. Wild! I can't say that it was comfortable (my left eye feels like I pulled a muscle) but it was still a fun experiment. patrick On 16 Apr 2009, at 11:53, Jim Gibson wrote: > Chuck, > This guy specializes in 3D images. Here is a cool one of the moon in 3D. > http://3.bp.blogspot.com/_9HcYqbvUc4s/SdIcjcHpGCI/AAAAAAAACl4/JHElNuZ95_M/s… > > English is not his first language, but I have no complaints there as he is perfectly understandable. He says: > Unlike many Deep sky objects, the Moon can be seen with enough parallax to form a real stereo pair. There is two ways to do it. First you take two pictures from other sides of earth at the same time and there will be some minor parallax. Secondly the libration of the Moon can be used for that, you just have to wait a longish time to have a same phase of the Moon but with differen libration amount. > > Jim _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com

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Re: [Utah-astronomy] More 3D
by Jim Gibson 17 Apr '09

17 Apr '09

Chuck, This guy specializes in 3D images. Here is a cool one of the moon in 3D. http://3.bp.blogspot.com/_9HcYqbvUc4s/SdIcjcHpGCI/AAAAAAAACl4/JHElNuZ95_M/s… English is not his first language, but I have no complaints there as he is perfectly understandable. He says: Unlike many Deep sky objects, the Moon can be seen with enough parallax to form a real stereo pair. There is two ways to do it. First you take two pictures from other sides of earth at the same time and there will be some minor parallax. Secondly the libration of the Moon can be used for that, you just have to wait a longish time to have a same phase of the Moon but with differen libration amount. Jim

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college student needs 8in f6
by RON VANDERHULE 16 Apr '09

16 Apr '09

Hi all, Prof. Sohl asked me to help one of his students build a scope for a finals project. We have been working on it but the mirror he ordered turned out to be a 8 in f/4 that is spherical not parabolised, bad coatings, and 1/2 inch thick from an outfit called Sylvan on e-bay. He is returning it for a refund. What we need is an 8in f/6 and finding one within his budget parameters has been difficult. So I am putting a feeler out to the local astro community hoping someone has one of these mirrors collecting dust that they could sell for about $80.00 or $100.00. If you have some decent eyepieces and focuser let me know also. We can get some GSOs' and a plastic r&p but if there is something better locally great. Thanks ahead of time for your help. Ron Vanderhule

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Re: [Utah-astronomy] UFO BLOG
by Joe Bauman 16 Apr '09

16 Apr '09

Rob -- It's josephmbauman(a)yahoo.com. Yokwe yuk, Joe --- On Thu, 4/16/09, Rob Ratkowski Photography <ratkwski(a)hawaii.rr.com> wrote: From: Rob Ratkowski Photography <ratkwski(a)hawaii.rr.com> Subject: Re: [Utah-astronomy] UFO BLOG To: "Utah Astronomy" <utah-astronomy(a)mailman.xmission.com> Date: Thursday, April 16, 2009, 7:41 PM Joe what's you e-mail address?? I have some UFO photos from Maui Aloha Rob _______________________________________________ Utah-Astronomy mailing list Utah-Astronomy(a)mailman.xmission.com http://mailman.xmission.com/cgi-bin/mailman/listinfo/utah-astronomy Visit the Photo Gallery: http://www.slas.us/gallery2/main.php Visit the Wiki: http://www.utahastronomy.com

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Faint UMa supernova
by Canopus56 16 Apr '09

16 Apr '09

Clear skies - Kurt ====================================================================== BAA electronic bulletin No. 00404 http://www.britastro.org/ ====================================================================== New Bright(ish) Supernova in Galaxy NGC 4088 Guy Hurst (TA Magazine) has recently issued an e-circular (Circular No. 2541) announcing a supernova discovery in galaxy NGC 4088. The SN, discovered by Giovanni Cortini, Italy, has been designated 2009dd and at discovery was at magnitude 13.7. This is relatively bright for a SN, and with the galaxy well placed in Ursa Major is an ideal opportunity for BAA members to monitor its increase or decrease in brightness over the next few nights. NGC 4088 is a magnitude 10.8 galaxy easily visible in a 20cm telescope although to see the SN will probably require a larger aperture. Imagers should have no trouble capturing the "new" star in a 20cm telescope. Note - galaxy NGC 4085 lies 12 arcmin south of NGC 4088. The SN lies at RA 12h 05m 33.6s and Dec +50d 32m 20s (2000.0), which puts it 2"W and 5"S of the centre of the galaxy (details taken from TA Circular). Please forward all images to the Deep Sky Section with full details of equipment, exposure and date/ time. Stewart Moore Deep Sky Section Director sigarro(a)btinternet.com

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