I've made observing dark nebulae my specialty the past several years. An incredible observing experience, seeing the Integrated Flux Nebula with my The finder eyepiece is marked 1. The stress will be circular in nature. Check out the interesting telescopes and their builders.
Astronomical Society of Greater Hartford
A noteworthy departure from other books is the detailed instructions the authors provide for corrective measures to cure optical difficulties encountered during figuring. Porter, was an expert optician, arctic explorer and artist, and he not only devised many new amateur telescope systems but contributed expertise to the building and testing of the inch-diameter telescope at Mount Palomar, Calif. To my astonishment I saw broad nebulosity - the IFN. The mirror shows no astigmatism after polishing out on my mirror making machine , a major milestone. The pilgrims attending the annual Stellafane conclave of telescope builders ranged in age from an year-old Long Island girl to an year-old builder from Cornwall, England, all consumed by a passion for telescopes. Cone Nebula, Christmas Tree cluster. Observing in the rugged Oregon Cascades one summer evening.
Joseph Ward: Pioneer New Zealand Telescope-Maker | SpringerLink
Test analysis method tedious and math heavy Rating: Once the back is straight the tool that was used on it is still important. This project was a much larger undertaking than I ever expected. The best Pyrex is that which has been slowly annealed. If you know of an unused telescope stashed away in someones attic, ask to borrow it! They are being consolidated here from several other sources. The telescope was mounted on a poorly built alt-azimuth style tripod and came with three overpowered and very small eyepieces.
Volume 3, Subjects covered: Thus a concave surface is ground out of the mirror blank. Pioneer New Zealand Telescope-Maker. Southern Stars, 19 , 91— Volume 2, Subjects covered: