By John Stephen Hicks
Almost each sensible astronomer who takes the pursuit to its moment point aspires to a set, everlasting housing for his telescope, allowing its swift and cozy use and fending off hours of setting-up time for every looking at consultation. A roll-off roof observatory is the best and by means of a long way the most well-liked observatory layout for today’s useful astronomers.
Building a Roll-off Roof Observatory can assist you choose even if to embark at the enterprise and should definitely impress your enthusiasm for the project.
The writer, either an novice astronomer panorama architect, solutions a number of the universal questions requested round observatory development protecting the subsequent topics:
Site making plans, zoning, and by-law necessities universal to such a lot states, cities and municipalities
Opportunities for finding the observatory
Tailoring the observatory in your specific use
Tools and structural elements required to construct it
Variations in footing layout to fit your soil conditions
Variations attainable in layout via pictures from proprietors all through united states and Canada
Opportunity to make use of the constitution for together with others–(incorporating a backyard patio lower than the gantry for example)
This fully-detailed e-book outlines step by step development .
A professionally designed roll-off observatory may perhaps rate up to $3000 only for those plans – that are supplied with development a Roll-off Roof Observatory.
Read or Download Building a Roll-Off Roof Observatory: A Complete Guide for Design and Construction PDF
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Additional resources for Building a Roll-Off Roof Observatory: A Complete Guide for Design and Construction
Will it require some tree removal? Note that some municipalities have stringent tree by-laws which require an exception to the by-law or a minor variance and a permit to remove. Careless removal could result in a fine. Is the star Polaris accessible in your chosen location? (a necessity for polar-alignment with non-computerized telescopes). Some counties/municipalities define the “permanence” of a structure as the limiting factor in exceptions to the local building code. Placing the structure on footings might qualify as a temporary-type building, whereas pouring a huge concrete (permanent) slab, may not.
Again, I cannot stress enough the importance of building an observatory that you will not outgrow. The observing limitations you experience today will not be what you can tolerate tomorrow. Larger aperture instruments will be within your economic grasp and larger CCD sensors will become commonplace (the CCD sensor driving you to create a warm room for a computer). Both opportunities could make you wish you had constructed an observatory at least as large as the model promoted in this book. Slab Footing Versus Sono Tube Footings A complete poured cement slab under the observatory proper is the easiest to install, providing you have cement truck access, several wheelbarrow assistants, and some careful planning.
This should be in a column long enough to extend the length of the pier but also accommodate the bolts that will hold the steel upper pier portion. Leave enough room above the rebar cage for them. I used coat-hanger wire to fasten the cage together. Heavy duty pliers, a wire cutter, and hacksaw are needed to build the rebar cage. Note that if you are using a full-length concrete pier make allowance for the length of mounting bolts that fasten the telescope mount to the pier. Your finished concrete footing should terminate an inch or two above the finished concrete floor in a slab type observatory floor and about 2 ft above grade in a sono-tube and wood joist floor type.