Out Door Light Fixture

Home Depot is carrying a International Dark-Sky Association approved out door wall mounted light fixture. The price is 39.98. Can use up to a 100w bulb and has a motion sensor built in.

I installed the light, replacing my globe style one and it took about 10 minutes. I also installed a Philips 40 W Amber light bulb.

I still have light on my steps when needed and it has made a huge difference on the light trespass in the back yard. Check it out and lets support the Home Depot on this product.

Mark Eburne


More info


It is made by Hampton Bay, made in China and the upc is 4633589006.


Not all Home Depots had them in stock and not all were promoting the International Dark Sky Association with the marketing material up at some stores.


By posting on the web site and having people talking to Home Depot we will get more awareness, step one of the big picture


Mark Eburne

Light Pollution Abatement

Light Pollution Abatement

RASC Vancouver

Attention All Members 

I have recently accepted the role of Chair, LPA RASC Vancouver.  I have been a member of RASC for about four years and have been actively involved in the AOMO here in Maple Ridge.  As an amateur astronomer, the night sky is very important to me and I am looking forward to helping preserve and improve the dark skies we have.

As you all are aware,  light glare, light trespass and light pollution here in the lower mainland and in the City of Vancouver, in particular, is a large problem. These problems have a direct impact to us as amateur and professional astronomers. From the basic enjoyment of the night sky to having a debilitating impact on imaging or severely hindering any kind of scientific research being done, light pollution needs to be managed and ultimately reduced for all to enjoy.

Not only does light pollution impact the astronomy community but it has negative impact on other areas within  the community including health and wellness of the public, wildlife, crime, safety and energy consumption to name a few.

In the past, there have been many successes in communities all across the country and around the world that have been able to directly impact the issue of light pollution in a positive way. Through City Ordinances and By-Laws that deal directly with sources of the problem, light pollution can be and has been noticeably reduced. It is my belief that the willingness to do something about light pollution is never far away but we must harness that willingness to effect positive change around us.

Efforts here in Vancouver by Vic Baker, Past Chair, have made a solid impact in awareness to the public. Congratulations to Vic and all of the supporting members that have been working directly and indirectly on this ongoing project.

To keep the momentum moving forward, I would like  to take this opportunity to introduce my plan that would assist in the management and reduction of light pollution in the City of Vancouver and surrounding areas. Clearly, any change will come from efforts of many individuals working together collectively towards one goal.

To achieve this goal, I will  assemble a committee of not only astronomers but of other members of the public who are impacted and who would benefit from light pollution abatement.  Amongst those on this committee, I would like to see representation from the City of Vancouver representing the change processes as well as industry representation for lighting products and services. I also hope to see individuals that have had success in other communities in dealing with light pollution abatement.

From this committee will come a Strategic Plan that establishes goals, objectives and action plans that everyone can be part of and get involved in with.

The plan will be focused around:

·         public awareness and education;

·         the measurement of current status and future results ;

·         a process to work closely with the City of Vancouver to support current and future avenues in dealing with light pollution abatement; and

·         create a model for others to use


I feel safe in saying that we all have a passion to manage and reduce light pollution and I feel very strongly that it can be done.  Using a collective efforts approach will be impactful and   efficient to meet the challenges ahead.

As I start to assemble the committee, I would like to hear your thoughts on what you feel would be helpful in achieving our goals of managing and reducing  light pollution.

If you would like to participate on the committee, please let me know as soon as possible. Also if you know of anyone who you feel would be a great committee member, please pass on this invitation to contact me.

I can be reached on my cell phone at 604 649 8356 and email at meburne@telus.net.

Thank you


Mark Eburne

Chair, Light Pollution Abatement

RASC, Vancouver

RASC TV Lens Members

This set of posts is about the TV Lens we were generously given by CTV to make into scopes.

Myself excluded, most people with these will need to make a tripod, and some kind of mount, probably a fork mount for sake of simplicity.

I recently acquired a planer as well as a second table saw that I can keep in Vancouver, so I have enough tools to build parts for people without such tools for the cost of material.

The tripods can be made of 2 X 6 lumber cut at an angle for legs, two pieces of plywood glued together for the mating plate. Door hinges can be used for the tops of the legs and a chain connected to eye bolts to prevent the tripod from collapsing.

The fork is a special problem. Mine is made out of a piece of aluminum tubing rectangular in cross-section. To make the U shape, I  cut 22.5 degree wedges of material out, bent it to shape and had it welded by Pro-Tec Marine Welding in North Vancouver for $140. I didn’t cut through completely, but left the cut so that one side of material was still there and with enough room between the cuts so that when they were brought together, a proper weld with filler rod could be done. Mine ended up being not quite parallel but close enough I can probably cold-set them.

One problem with this lens is where the focus comes to. I think it may be too close to the last lens element to make for a convenient position, so I think some kind of negative lens element is needed to add some back focus distance.Lens Front

More moon photos

I was able to get a couple of photos of the moon through my Skywatcher 80mmED refractor a few nights ago. These are worlds better than the pics I took with my camera lenses, but they still lack a lot of the detail I was able to see visually. There were some rilles (long, winding canyons) in particular that were striking through the eyepiece, but which didn’t show up in the photos.

Feb. 2009 moon
Feb. 2009 moon

And, for fun, here’s the same photo with the colour saturation artificially enhanced. I don’t know how representative of reality the hues are, but this is what came out of my camera:

Feb. 2009 moon, with 'enhancements'


The Chris Graham Robotic Telescope (CGRT)

  • Chris Graham is a long standing amateur astronomer with a keen interest in astrophotography. In 2005 he approached Council with an opportunity to collaborate in the use of a robotic telescope located in the United States using internet links. The U.S. location was subsequently replaced by one in Australia. In both instances Chris provided the telescope and imaging equipment and software while the RASCVC provided some setup expertise, operations labour and processing experience. It was a match that enabled both sides to learn a great deal about managing a remote telescope facility.
  • Remote access to dark skies via the Chris Graham Robotic Telescope (CGRT) has allowed the RASC to complement the “hands-on” local observing at the AOMO facility and interest a greater circle of members and public who are unable to travel to dark skies. Having had such a facility in the portfolio of RASC -VC resources has enhanced our services to local members and contribution to the community. The CGRT has served as an important training and development facility in collaboration with our partners, which include the H.R. Macmillan Space Centre, UBC, SFU and the Canadian Astronomical Data Centre (CADC) of the NRC. Lay persons and students have been invited to learn to use sophisticated telescope equipment and advanced robotic operations software. Captured data becomes available to all Canadians for study and processing via the CADC. Additionally, RASC Centres across Canada have also been invited to request project data capture from the CGRT.
  • Chris’ generous donations enabled Vancouver Centre to pay the site rental fees. Although our current arrangement will be suspended at the end of 2008, we are optimistic that there will be new opportunities in the future.