Last month I briefly covered a little of the history of our greatest asset, the HAS dark site. This month, I want to discuss observing etiquette. The primary reason that Columbus was chosen for our dark site was that it was far from the lights of Houston. We wanted a “dark” place to observe. The name, Houston Astronomical Society Dark Site, was chosen for a reason. Proper observing etiquette will insure that we always have as dark a site as possible.

We have all gone through the site training. However, so much information is covered during that short training session that it is easy to miss or simply not retain a few things. Even seasoned observers need a refresher from time to time. In order for all our members to enjoy the site, there are certain rules that must be followed.

There is a reason that we use dim red light for observing. Dim red light does not destroy our night vision. When exposed to white light it takes thirty to forty-five minutes to become fully dark adapted again. White light, and even bright red light, is a real problem when you are trying to observe difficult objects or do astrophotography. A moment of white light can wipe out hours of effort for a visual observer on the brink of seeing an object that is nearly impossible to see. A photograph can be ruined in an instant by white light. 

If you use a computer while observing, cover the screen with red gel, Plexiglas or shield it from other observers. Be aware of the screen’s brightness. Also, check the brightness of your table light or any other light that you use while observing, including flashlights. Red lights worn on the forehead are a real problem. When you raise your head to look at your charts or to talk to someone, you blind nearby observers with your light, even if it is dim. A dim red flashlight that aims the light down to the ground is a much better option.

Car lights, both interior and exterior ones, are a serious problem. Most of the newer cars have interior lights that cannot be turned off. Many have day running lights that cannot be turned off. The only options are to pull the fuse to your lights or cover the lights. I just recently found out that there is a red tape designed for just that purpose. It’s called Tail Light Tape. Cool stuff!  It can easily be placed over all the lights in as many layers as necessary to block out all the white light. Make sure that you get everything covered and check to see that no white shows before it gets dark.

During prime night star parties, there are always 10 minute light windows called during the night so members who do not wish to stay all night can leave. During these light windows, white light is allowed. For safety reasons, use your headlights to drive off the field. These light windows are announced ahead of time to give you plenty of time to get your equipment dismantled and packed away.  Do not wait until the window is called to start packing. Be ready drive off the field when the window is called.

If you plan to observe for just a short time and will leave before a light window is called, you need to be able to pack up your things and drive off the field without giving off any white light. It is a good idea to practice at home until you can pack up using only a dim red flashlight. For safety, have someone with a red flashlight guide you to the exit. You might also consider parking your vehicle in the picnic area near the exit road to minimize the damage should any white light accidently escape.

If for some reason you are not comfortable with the strict light rules at the dark site, there are a couple of other alternatives for you. Many of our members observe at George Bush Park where there are no light restrictions. Some go there to get help with new equipment, learn how to set up and collimate, etc. It is a convenient location with low travel time. Your best option, however, would be to take advantage of the “novice” star parties held on other than prime nights at the dark site. These star parties are designed to help the novice observer cope with light restrictions, work out the problems they may be having with car lights or equipment, learn observing techniques such as star hopping, choose what star charts to use, get advice on dew heaters or warm clothing for winter. You may not remember what the dob shed is or how to report restroom problems. Seasoned observers are always there to help with whatever you need. It’s the perfect way to learn the ropes.

Between the observing pads and the private observatories are three large concrete pads. Although they cannot be “locked up”, they are privately owned and not for use by the general membership. Please make sure the owners will not be arriving later and ask their permission before using them. 

Many of our members now have private observatories. A lot of these members do astrophotography or other serious astronomy. It is always fun to visit with them, but keep in mind that they can be quite busy at times. If possible, arrange for a visit ahead of time so they will be expecting you. If you have not arranged a visit, please ask if it is a convenient time for company before entering their observatory.

We have a great picnic area with tables and benches under the trees. This area is also for tent camping.  Please do not set up your tent on the observing field.

Last month I mentioned the two large pads on the outer circle. If you meet the use criteria and would like to reserve one of those pads, contact Steve Goldberg. He is also the person to contact to reserve one of the two weekend RV spots. His address is: [email protected].

We want all members, old and new, to be able to successfully use the site for their own interest, whether it be just casual observing or serious astronomy. That is why we have these rules. Let us all do what we can to insure that our dark site will stay as dark as we can possibly make it.