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Old 17-March-2004, 03:21 PM
SkyEyeGuy SkyEyeGuy is offline
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Default collimating your oriental carpet: guide for the amateur

Resenmut writes:

"3. Compare position of X from Senmut's map and from my oriental carpet with Sedna's. it is the same area of sky you fools, dear anti X's.... "

That's all well and good, Resenmut, but until you can confirm that your oriental carpet has been properly waft-aligned and collimated, I can't take this data seriously.

As you know, Oriental carpets woven between AD 900 and AD 1915 cannot be considered accurate to more than 1 arcminute/m^^2 unless the weave has received a thorough and proper linear collimation.

This process is daunting to most amateur rug-watchers. Indeed, a poorly-collimated rug is the single most cited reason many astronomers turn to telescopes or other clumsy optical devices; with proper attention to detail, however, even an inexperienced rugger can achieve stunning results with a properly collimated rug.

Begin by cleaning your instrument thoroughly. If the instrument has seen heavy use, for instance in the foyer of a busy Chinese all-you-can-eat lunch buffet establishment, you'll probably need to beg, borrow, or steal an Orion Deep Sky Rugwasher 2000 (get the wide apeture model; it's worth the extra $100 USD).

Use the Deep Sky as directed, taking care to remove ALL signs of foot traffic. Remember, Pluto went undiscovered for nearly forty years because of a single faint boot-print on Tombaugh's big twenty-foot dining room 'Flying Dragons' oriental!

Once the fibers have been thoroughly cleaned -- ON BOTH SIDES -- you're ready to begin the collimation in earnest.

You cannot, of course, collimate without a collimation tool. Professional waft-alignment tools can run into the thousands of dollars; luckily for amateurs, both Orion and Dirt Devil offer more modestly priced lines of effective waft-alignment tool sets that start as low as $75 USD.

A word here -- the Orion tools are more expensive, but in my opinion are worth the money. The Dirt Devil line will still provide good results, though, and all do double-duty as household vacuum cleaners, so that might be a good choice for a tight budget.

Begin at the center of your instrument, and work outward, in concentric 10 cm circles. Using the waft-alignment tool, brush each fiber and weave out and away from the rug's center (which you may want to mark with a stick-on circle; adhesive reinforcement rings made for three-hole-bound notebook paper works well in this instance).

Work slowly and carefully, and check your progress often. Re-waft any areas that do NOT lie in perfect alignment between the base of the fiber and the center of the rug. Check your work frequently with a sextant, a welder's mask, and a #3 sewing needle.

Keep working, until at last you reach the outer perimeter of your instrument. It is here that most inexperienced collimators fail -- but the quality of the images derived from your rugging will ultimately be determined by the degree of refraction returns originating from the outer 10% of the instrument.

So take your time.

Once you're done, allow the instrument to reach room temperature, gather your books by Sitchin, Velikovksy, and Von Daineken, and explore the secrets of the skies!