From christopher.kyba at wew.fu-berlin.de Wed Feb 1 13:35:12 2012 From: christopher.kyba at wew.fu-berlin.de (Christopher Kyba) Date: Wed, 1 Feb 2012 14:35:12 +0100 Subject: [SQM] firmware update for the SQM-LE Message-ID: Dear SQM-LE users, I wanted to let you know about a firmware update for the SQM-LE that has just been released by Unihedron. Several groups independently noticed that many SQM-LEs display a strange "jumping" behavior at around 15 mag/arcsec^2, and it was determined that this behavior is due to pickup of external electromagnetic fields (e.g. the 50/60 Hz line signal). It is possible to correct this "jumping" simply by averaging the results obtained by the SQM over a minute period, but with the new firmware update from Unihedron you won't have to do this. Instead, the SQM averages several readings itself and reports this averaged value when you do an "rx" command. Take a look at the attached plot, comparison.pdf. The new version of the firmware allows you to get the old "unaveraged" data using the "ux" command, and this allowed me to do a direct comparison of the old and new code as the sun set last night. You can see that when the sky got down to about 14.2 mag/arcsec^2 the SQM developed the jumping behavior, and that with the new code the transition is smooth, and the jumping is eliminated. Unihedron has worked to make installing the update as easy as possible, so I hope that everyone running an SQM-LE will be able to do it. Windows and Linux users can do it by downloading the new Unihedron Device Manager (udm). (Linux users can also use the older sqmutil perl program.) Here are the links to the windows device manager and the updated firmware: Windows version here (setup.exe installs program): http://unihedron.com/projects/sqm-le/cd/windows/udm/ Linux version here (20Mb file): http://unihedron.com/projects/sqm-le/cd/unix/udm The updated firmware is here: http://unihedron.com/projects/sqm-le/cd/utility/SQMLE-4-3-21.hex The previous firmware is here (in case you want to go back): http://unihedron.com/projects/sqm-le/cd/utility/SQMLE-4-3-19.hex As far as I am aware, the SQM-LU is not affected by this problem, so you don't have to do anything if you're running an SQM-LU. Because I think it is so important that all SQM-LE users apply this patch I'm sending this to several email distribution lists, so I'm sorry to those of you who receive multiple copies. If you aren't already subscribed to the official Unihedron SQM mailing list, maybe you should sign up today: http://unihedron.com/cgi-bin/mailman/listinfo/sqm Wishing you starry skies, Christopher Kyba Institute for Space Sciences Freie Universit?t Berlin http://userpage.fu-berlin.de/~kyba/ ps. If you are a light pollution researcher, you may want to subscribe to the Yahoo light pollution research group. It's a list for sharing information about light pollution research (e.g. sharing announcements about upcoming conferences, papers that you have had published, looking for collaborators for grant proposals), and not about dark sky activism, legislation, etc (which the IDA already does a great job of promoting). It's not necessary to have a Yahoo account to sign up, you can subscribe to the email list simply by sending a message to LPResearch-subscribe at yahoogroups.com -------------- next part -------------- A non-text attachment was scrubbed... Name: comparison.pdf Type: application/pdf Size: 82412 bytes Desc: not available Url : http://unihedron.com/pipermail/sqm/attachments/20120201/006e05ee/attachment-0001.pdf From dorien.lolkema at rivm.nl Thu Feb 9 08:46:05 2012 From: dorien.lolkema at rivm.nl (Dorien Lolkema) Date: Thu, 9 Feb 2012 09:46:05 +0100 Subject: [SQM] SQM-LU at the Intercomparison Campaign, 9 April - 9 May 2012 at CESAR-NL In-Reply-To: References: Message-ID: Hi all, I have a question about the SQM to send. I read on your paper that only SQM LE is ok, but isn't possible to send an SQM LU with USB/ETHERNET extender? -> Yes, that should do. So, if you can send your SQM-LU with USB/Ethernet extender, we'll treat it as an SQM-LE. Best regards, Dorien Lolkema (Sorry for possible cross-postings, I didn't want to miss SQM-LU users.) ___________________________________ drs. D.E. Lolkema Scientist Light and Air Quality Working days: Mo-Tu-We-Th RIVM tel. +31 30 274 4258 fax. +31 30 228 7531 From: BuioMetria Partecipativa To: Dorien Lolkema Cc: Andrea Giacomelli Date: 08-02-2012 17:29 Subject: Re: Participation form Intercomparison Campaign, 9 April - 9 May 2012 at CESAR-NL Sent by: fgiubbi at gmail.com Hi Dorien, It's Francesco and Andrea from Italy (Buiometria Partecipativa). We'd like to partecipate but unfortunately it's not possible for us to be in the Netherland so we should send one SQM and take a presentation via skype, if it's possible. I have a question about the SQM to send. I read on your paper that only SQM LE is ok, but isn't possible to send an SQM LU with USB/ETHERNET extender? Thanks best regards On Wed, Jan 18, 2012 at 4:44 PM, Dorien Lolkema wrote: Dear all, Before the Christmas Holidays, I sent you the first information regarding the Intercomparison Campaign of SQMs to be held at the Cabauw Experimental Site for Atmospheric Research (CESAR) from 9 April - 9 May 2012, including a workshop on 9 May 2012. To further prepare this campaign and workshop, I'd like you to fill in the Participation form. In this form, you'll also find extra information regarding the campaign and workshop. Deadline is 17 Februari 2012. If you have any further questions, please do not hesitate to contact me. I'm looking forward to a nice campaign and workshop. I hope you do so too! Best regards, Dorien Lolkema ___________________________________ drs. D.E. Lolkema Scientist Light and Air Quality Working days: Mo-Tu-We-Th RIVM tel. +31 30 274 4258 fax. +31 30 228 7531 Proclaimer RIVM -- Francesco Giubbilini cel.+39 3497260760 www.buiometriapartecipativa.org Proclaimer RIVM -------------- next part -------------- An HTML attachment was scrubbed... URL: http://unihedron.com/pipermail/sqm/attachments/20120209/dbbe2e56/attachment.htm From anthony at unihedron.com Sat Feb 11 17:01:04 2012 From: anthony at unihedron.com (Anthony Tekatch) Date: Sat, 11 Feb 2012 12:01:04 -0500 Subject: [SQM] New Datalogging Sky Qaulity Meter Message-ID: <20120211120104.392da1ec@pino> ** Announcing the SQM-LU-DL Data-logging USB connected Sky Quality Meter ** This new data-logging light meter is designed for applications involving remote unattended night-sky light level monitoring for extended periods. Such application might include: - Biological studies involving effects of night light levels on animals. - Astronomy site location studies. The data collection rate and threshold is set up via your computer while the unit is temporarily connected by USB. Once configured, the unit can operate by an external battery (supplied). 6-AA batteries will last up to many months of unattended operation. Also, larger batteries can be used to extend the duration or increase sample rate. Up to 32768 stored readings can be collected, then retrieved when the unit is returned to your computer. You can find out more from our website: http://unihedron.com/projects/sqm-lu-dl/ Also, a new graphical user interface has been created for all Unihedron SQM connected devices. It works under Windows/Mac/Linux, and is straightforward to install. The Unihedron Device Manager (udm) can be found on the CD that is supplied with these units, here: http://unihedron.com/projects/darksky/cd/ Best regards, Anthony Tekatch Unihedron 4 Lawrence Ave. Grimsby, ON L3M 2L9 Canada Tel: (905) 945-1197 Fax: (905) 945-6770 http://unihedron.com From christopher.kyba at wew.fu-berlin.de Mon Feb 13 12:56:18 2012 From: christopher.kyba at wew.fu-berlin.de (Christopher Kyba) Date: Mon, 13 Feb 2012 13:56:18 +0100 Subject: [SQM] Function to approximately predict variation of sky brightness with cloudiness Message-ID: Hello LPResearch list and Unihedron SQM list, I just wanted to let you know that I've found an equation that approximately describes the relationship between sky luminance (as measured by the SQM) and degree of cloudiness. I "fitted" the parameters by hand using data we have measured (http://dx.plos.org/10.1371/journal.pone.0017307), and compared it to my estimates of the SQM values observed at CESAR (http://www.rivm.nl/bibliotheek/rapporten/680151002.html). You can see the curves in the attached plot. Red points are for SQMs without a lens, black points for SQMs with a lens. The x and o represent our measurement location inside of Berlin, the crosses are CESAR, and the stars are a rural location outside of Berlin. The curves I've plotted are: mag/arcsec^2=22.6-C*(1+0.8*F^2) (SQM with lens) mag/arcsec^2=22.6-C*(1+0.7*F^2) (SQM without lens) Where C is the SQM value measured for clear skies, and F is the fraction of sky that is covered (clear=0, cloudy=1). I will be testing/refining this equation based on data from international sites this spring, but I thought that some of you might be interested in seeing this functional form. In principle, it could be used to very roughly predict "circadian dose" over a long time period using weather reports and a single SQM reading on a clear night. Note that this equation probably only works for locations with light pollution - if you have clear/cloudy SQM data from a pristine location I would be very interested if you could send me the values you have observed. Best wishes from Berlin, Christopher Kyba Institute for Space Sciences Freie Universit?t Berlin http://userpage.fu-berlin.de/~kyba/ -------------- next part -------------- A non-text attachment was scrubbed... Name: sqm_cloudiness.pdf Type: application/pdf Size: 6029 bytes Desc: not available Url : http://unihedron.com/pipermail/sqm/attachments/20120213/b1dbb336/attachment.pdf From christopher.kyba at wew.fu-berlin.de Mon Feb 13 13:26:37 2012 From: christopher.kyba at wew.fu-berlin.de (Christopher Kyba) Date: Mon, 13 Feb 2012 14:26:37 +0100 Subject: [SQM] Function to approximately predict variation of sky brightness with cloudiness In-Reply-To: References: Message-ID: Please excuse me for needing to send a correction to the last message. I noticed a small error in the formulas I sent. The value of "C" is the difference between the SQM value measured during clear skies and 22.6. That is: C=22.6-(clear sky SQM value) C tells you the degree to which the sky is polluted relative to an assumed "perfect" value of 22.6. Christopher Kyba Institute for Space Sciences Freie Universit?t Berlin http://userpage.fu-berlin.de/~kyba/ On Mon, Feb 13, 2012 at 1:56 PM, Christopher Kyba wrote: > Hello LPResearch list and Unihedron SQM list, > > I just wanted to let you know that I've found an equation that > approximately describes the relationship between sky luminance (as > measured by the SQM) and degree of cloudiness. ?I "fitted" the > parameters by hand using data we have measured > (http://dx.plos.org/10.1371/journal.pone.0017307), and compared it to > my estimates of the SQM values observed at CESAR > (http://www.rivm.nl/bibliotheek/rapporten/680151002.html). ?You can > see the curves in the attached plot. ?Red points are for SQMs without > a lens, black points for SQMs with a lens. ?The x and o represent our > measurement location inside of Berlin, the crosses are CESAR, and the > stars are a rural location outside of Berlin. > > The curves I've plotted are: > > mag/arcsec^2=22.6-C*(1+0.8*F^2) ? ? (SQM with lens) > mag/arcsec^2=22.6-C*(1+0.7*F^2) ? ? (SQM without lens) > > Where C is the SQM value measured for clear skies, and F is the > fraction of sky that is covered (clear=0, cloudy=1). > > > I will be testing/refining this equation based on data from > international sites this spring, but I thought that some of you might > be interested in seeing this functional form. ?In principle, it could > be used to very roughly predict "circadian dose" over a long time > period using weather reports and a single SQM reading on a clear > night. ?Note that this equation probably only works for locations with > light pollution - if you have clear/cloudy SQM data from a pristine > location I would be very interested if you could send me the values > you have observed. > > Best wishes from Berlin, > > Christopher Kyba > Institute for Space Sciences > Freie Universit?t Berlin > http://userpage.fu-berlin.de/~kyba/ From cwalker at noao.edu Mon Feb 13 13:55:43 2012 From: cwalker at noao.edu (Constance Walker) Date: Mon, 13 Feb 2012 06:55:43 -0700 Subject: [SQM] Function to approximately predict variation of sky brightness with cloudiness In-Reply-To: References: Message-ID: <212AC148-6469-41A2-B59A-7802FDA3295F@noao.edu> Hi, Chris, Wonderful! The plots make sense in that there should be a larger difference between measurements without a lens than with a lens when comparing city vs rural area. Thank-you for sharing the results. Connie On Feb 13, 2012, at 5:56 AM, Christopher Kyba wrote: > Hello LPResearch list and Unihedron SQM list, > > I just wanted to let you know that I've found an equation that > approximately describes the relationship between sky luminance (as > measured by the SQM) and degree of cloudiness. I "fitted" the > parameters by hand using data we have measured > (http://dx.plos.org/10.1371/journal.pone.0017307), and compared it to > my estimates of the SQM values observed at CESAR > (http://www.rivm.nl/bibliotheek/rapporten/680151002.html). You can > see the curves in the attached plot. Red points are for SQMs without > a lens, black points for SQMs with a lens. The x and o represent our > measurement location inside of Berlin, the crosses are CESAR, and the > stars are a rural location outside of Berlin. > > The curves I've plotted are: > > mag/arcsec^2=22.6-C*(1+0.8*F^2) (SQM with lens) > mag/arcsec^2=22.6-C*(1+0.7*F^2) (SQM without lens) > > Where C is the SQM value measured for clear skies, and F is the > fraction of sky that is covered (clear=0, cloudy=1). > > > I will be testing/refining this equation based on data from > international sites this spring, but I thought that some of you might > be interested in seeing this functional form. In principle, it could > be used to very roughly predict "circadian dose" over a long time > period using weather reports and a single SQM reading on a clear > night. Note that this equation probably only works for locations with > light pollution - if you have clear/cloudy SQM data from a pristine > location I would be very interested if you could send me the values > you have observed. > > Best wishes from Berlin, > > Christopher Kyba > Institute for Space Sciences > Freie Universit?t Berlin > http://userpage.fu-berlin.de/~kyba/ > _______________________________________________ > sqm mailing list > sqm at unihedron.com > http://unihedron.com/cgi-bin/mailman/listinfo/sqm *~*~*~*~*~*~*~*~*~*~*~*~*~* Constance E. Walker, Ph.D. director, GLOBE at Night campaign (www.globeatnight.org) member, Astronomical Society of the Pacific Board of Directors member, International Dark-Sky Association Board of Directors chair, International Dark-Sky Association Education Committee chair, 2012 Global Astronomy Month's Dark Skies Awareness Program co-chair, International Astronomical Union 2012 Special Session on light pollution associate scientist & senior science education specialist, NOAO National Optical Astronomy Observatory (NOAO) 950 N. Cherry Avenue Tucson, AZ 85719 USA 520-318-8535 cwalker at noao.edu *~*~*~*~*~*~*~*~*~*~*~*~*~* -------------- next part -------------- An HTML attachment was scrubbed... URL: http://unihedron.com/pipermail/sqm/attachments/20120213/1b37c413/attachment-0001.htm From cwalker at noao.edu Tue Feb 21 22:49:57 2012 From: cwalker at noao.edu (Constance Walker) Date: Tue, 21 Feb 2012 15:49:57 -0700 Subject: [SQM] IAU Special Session 17 on Light Pollution: abstract submissions requested Message-ID: <2CDFD66E-268E-4715-9BB6-5D82A95AC8E7@noao.edu> Please consider submitting an abstract to give a presentation at Special Session 17 on Light Pollution at the Beijing International Astronomical Union General Assembly XXVIII. Abstracts are due February 29, 2012. Notifications to abstract submitters is May 1, 2012. The Special Session dates are August 29 -- 31, 2012. For a session schedule and more information about IAU Special Session 17 on Light Pollution, see http://iau.iteda.org/. The issue of light pollution is a major concern of the International Astronomical Union; during the IAU General Assembly in the city of Rio de Janeiro in 2009, a resolution was unanimously adopted (Resolution B5) to support the need to preserve the night sky and the right to see stars. With the increasing use of artificial light at night posing a growing threat to the visibility of the night sky, a Special Session at the upcoming General Assembly will highlight technical aspects of astronomical site protection and the educational aspects of increasing global awareness on issues concerning light pollution. The session topics will cover the following areas: 1. Media & Dark-Skies Images Worth a 1000 Words 2. Public Outreach on Light Pollution by Amateur Astronomers 3. Role of Planetaria & Science Centers in Outreach on Light Pollution 4. Light-Pollution?s Effects on Wildlife & Health Issues 5. Light-Pollution Education: The Role of the School to Change the Social Vision of this Global Problem 6. Education through Global Star-Hunting & ?Nights of Darkness? Campaigns 7. Dark Skies Measurements for Education and Site Monitoring 8. Dark Sky Places, Starlight Reserves and Astro-Tourism 9. Light Pollution and Protecting Observatory Sites 10. Progress and Action Plan for Implementing IAU 2009 Resolution B5 11. Spectra of Artificial Blue-Rich Sources 12. Observational Studies Most Impacted by Contamination Below 500nm 13. Astronomical Input to Lighting Industry Development; Prospects for Success For more information about registration to the IAU General Assembly, see http://www.astronomy2012.org/dct/page/65611. For more information about abstract submission, see http://www.astronomy2012.org/dct/page/65615 . Sincerely, Beatriz Garcia (Argentina) Richard Green (United States) Connie Walker (United States) Xue Sui Jian (China Nanjing) SOC Co-Chairs for IAU SpS17 *~*~*~*~*~*~*~*~*~*~*~*~*~* Constance E. Walker, Ph.D. director, GLOBE at Night campaign (www.globeatnight.org) member, Astronomical Society of the Pacific Board of Directors member, International Dark-Sky Association Board of Directors chair, International Dark-Sky Association Education Committee chair, 2012 Global Astronomy Month's Dark Skies Awareness Program co-chair, International Astronomical Union 2012 Special Session on light pollution associate scientist & senior science education specialist, NOAO National Optical Astronomy Observatory (NOAO) 950 N. Cherry Avenue Tucson, AZ 85719 USA 520-318-8535 cwalker at noao.edu *~*~*~*~*~*~*~*~*~*~*~*~*~* -------------- next part -------------- An HTML attachment was scrubbed... URL: http://unihedron.com/pipermail/sqm/attachments/20120221/4045407e/attachment.htm From cwalker at noao.edu Tue Feb 21 22:52:22 2012 From: cwalker at noao.edu (Constance Walker) Date: Tue, 21 Feb 2012 15:52:22 -0700 Subject: [SQM] IAU Special Session 17 on Light Pollution: abstract submissions requested Message-ID: <2445F273-8CB2-4A15-B66A-33B35DC74D46@noao.edu> Please consider submitting an abstract to give a presentation at Special Session 17 on Light Pollution at the Beijing International Astronomical Union General Assembly XXVIII. Abstracts are due February 29, 2012. Notifications to abstract submitters is May 1, 2012. The Special Session dates are August 29 -- 31, 2012. For a session schedule and more information about IAU Special Session 17 on Light Pollution, see http://iau.iteda.org/. The issue of light pollution is a major concern of the International Astronomical Union; during the IAU General Assembly in the city of Rio de Janeiro in 2009, a resolution was unanimously adopted (Resolution B5) to support the need to preserve the night sky and the right to see stars. With the increasing use of artificial light at night posing a growing threat to the visibility of the night sky, a Special Session at the upcoming General Assembly will highlight technical aspects of astronomical site protection and the educational aspects of increasing global awareness on issues concerning light pollution. The session topics will cover the following areas: 1. Media & Dark-Skies Images Worth a 1000 Words 2. Public Outreach on Light Pollution by Amateur Astronomers 3. Role of Planetaria & Science Centers in Outreach on Light Pollution 4. Light-Pollution?s Effects on Wildlife & Health Issues 5. Light-Pollution Education: The Role of the School to Change the Social Vision of this Global Problem 6. Education through Global Star-Hunting & ?Nights of Darkness? Campaigns 7. Dark Skies Measurements for Education and Site Monitoring 8. Dark Sky Places, Starlight Reserves and Astro-Tourism 9. Light Pollution and Protecting Observatory Sites 10. Progress and Action Plan for Implementing IAU 2009 Resolution B5 11. Spectra of Artificial Blue-Rich Sources 12. Observational Studies Most Impacted by Contamination Below 500nm 13. Astronomical Input to Lighting Industry Development; Prospects for Success For more information about registration to the IAU General Assembly, see http://www.astronomy2012.org/dct/page/65611. For more information about abstract submission, see http://www.astronomy2012.org/dct/page/65615 . Sincerely, Beatriz Garcia (Argentina) Richard Green (United States) Connie Walker (United States) Xue Sui Jian (China Nanjing) SOC Co-Chairs for IAU SpS17 *~*~*~*~*~*~*~*~*~*~*~*~*~* Constance E. Walker, Ph.D. director, GLOBE at Night campaign (www.globeatnight.org) member, Astronomical Society of the Pacific Board of Directors member, International Dark-Sky Association Board of Directors chair, International Dark-Sky Association Education Committee chair, 2012 Global Astronomy Month's Dark Skies Awareness Program co-chair, International Astronomical Union 2012 Special Session on light pollution associate scientist & senior science education specialist, NOAO National Optical Astronomy Observatory (NOAO) 950 N. Cherry Avenue Tucson, AZ 85719 USA 520-318-8535 cwalker at noao.edu *~*~*~*~*~*~*~*~*~*~*~*~*~* -------------- next part -------------- An HTML attachment was scrubbed... URL: http://unihedron.com/pipermail/sqm/attachments/20120221/bade0f13/attachment-0001.htm From cwalker at noao.edu Mon Feb 27 06:15:46 2012 From: cwalker at noao.edu (Constance Walker) Date: Sun, 26 Feb 2012 23:15:46 -0700 Subject: [SQM] IAU Special Session 17 on Light Pollution: abstract submissions requested In-Reply-To: <2CDFD66E-268E-4715-9BB6-5D82A95AC8E7@noao.edu> References: <2CDFD66E-268E-4715-9BB6-5D82A95AC8E7@noao.edu> Message-ID: <90A53B9B-9456-4202-BBED-BC138D3DBA37@noao.edu> Dear Colleague in Dark Skies Protection, We have three items of good news: 1) The possibility of having Skype-like capabilities at the IAU General Assembly (and at SpS17, in particular) is being researched. With the possibility of electronic presentations, we are encouraging you to submit an abstract to SpS17, even if you are unable to travel to the conference. 2) If you intend to present electronically at SpS17, you may submit an abstract without paying a registration fee. 3) The deadline for both registering for the IAU General Assembly and submitting abstracts (in particular, to SpS17) has been extended to March 17. Your involvement in SpS17 will undoubtedly further the efforts in addressing light pollution issues. Best regards, Connie On Feb 21, 2012, at 3:49 PM, Constance Walker wrote: > Please consider submitting an abstract to give a presentation at > Special Session 17 on Light Pollution at the Beijing International > Astronomical Union General Assembly XXVIII. Abstracts are due > February 29, 2012. Notifications to abstract submitters is May 1, > 2012. The Special Session dates are August 29 -- 31, 2012. For a > session schedule and more information about IAU Special Session 17 > on Light Pollution, see http://iau.iteda.org/. > > The issue of light pollution is a major concern of the International > Astronomical Union; during the IAU General Assembly in the city of > Rio de Janeiro in 2009, a resolution was unanimously adopted > (Resolution B5) to support the need to preserve the night sky and > the right to see stars. With the increasing use of artificial light > at night posing a growing threat to the visibility of the night sky, > a Special Session at the upcoming General Assembly will highlight > technical aspects of astronomical site protection and the > educational aspects of increasing global awareness on issues > concerning light pollution. The session topics will cover the > following areas: > > 1. Media & Dark-Skies Images Worth a 1000 Words > 2. Public Outreach on Light Pollution by Amateur Astronomers > 3. Role of Planetaria & Science Centers in Outreach on Light Pollution > 4. Light-Pollution?s Effects on Wildlife & Health Issues > 5. Light-Pollution Education: The Role of the School to Change the > Social Vision of this Global Problem > 6. Education through Global Star-Hunting & ?Nights of Darkness? > Campaigns > 7. Dark Skies Measurements for Education and Site Monitoring > 8. Dark Sky Places, Starlight Reserves and Astro-Tourism > 9. Light Pollution and Protecting Observatory Sites > 10. Progress and Action Plan for Implementing IAU 2009 Resolution B5 > 11. Spectra of Artificial Blue-Rich Sources > 12. Observational Studies Most Impacted by Contamination Below 500nm > 13. Astronomical Input to Lighting Industry Development; Prospects > for Success > > For more information about registration to the IAU General Assembly, > see http://www.astronomy2012.org/dct/page/65611. For more > information about abstract submission, see http://www.astronomy2012.org/dct/page/65615 > . > > Sincerely, > Beatriz Garcia (Argentina) > Richard Green (United States) > Connie Walker (United States) > Xue Sui Jian (China Nanjing) > SOC Co-Chairs for IAU SpS17 > > > > *~*~*~*~*~*~*~*~*~*~*~*~*~* > Constance E. Walker, Ph.D. > director, GLOBE at Night campaign (www.globeatnight.org) > member, Astronomical Society of the Pacific Board of Directors > member, International Dark-Sky Association Board of Directors > chair, International Dark-Sky Association Education Committee > chair, 2012 Global Astronomy Month's Dark Skies Awareness Program > co-chair, International Astronomical Union 2012 Special Session on > light pollution > associate scientist & senior science education specialist, NOAO > > National Optical Astronomy Observatory (NOAO) > 950 N. Cherry Avenue > Tucson, AZ 85719 USA > 520-318-8535 > cwalker at noao.edu > *~*~*~*~*~*~*~*~*~*~*~*~*~* > > > *~*~*~*~*~*~*~*~*~*~*~*~*~* Constance E. Walker, Ph.D. director, GLOBE at Night campaign (www.globeatnight.org) member, Astronomical Society of the Pacific Board of Directors member, International Dark-Sky Association Board of Directors chair, International Dark-Sky Association Education Committee chair, 2012 Global Astronomy Month's Dark Skies Awareness Program co-chair, International Astronomical Union 2012 Special Session on light pollution associate scientist & senior science education specialist, NOAO National Optical Astronomy Observatory (NOAO) 950 N. Cherry Avenue Tucson, AZ 85719 USA 520-318-8535 cwalker at noao.edu *~*~*~*~*~*~*~*~*~*~*~*~*~* -------------- next part -------------- An HTML attachment was scrubbed... URL: http://unihedron.com/pipermail/sqm/attachments/20120226/128105b8/attachment-0001.htm