Recent content by solarblast

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    Exiting 101: Tips & Tricks for a Smooth Transition

    How do I exit? Time to write this down. :-)
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    Logoff from Forums: How to Logoff?

    How do Ilogoff? Strange. I've done this before.
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    Meteor trajectories -- Interested in computing them?

    Yes, deeply into the software. It's a rewrite of fortran iv, the late1960 era, into fortran 90. The code consists of two parts, plate reduction and meteor orbits. The reduction code deals with imagery from a doubly observed meteor. That is, from two stations. The reduction f90 code is...
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    Meteor trajectories -- Interested in computing them?

    Is anyone in this forum interested in computing meteor trajectories?
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    Bisque Software for Astronomy SkyX

    Good idea. I joined them. They have a lot of topics that involve the Bisque. I posted in a proper forum.
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    Bisque Software for Astronomy SkyX

    Yes, I have have their Paramount ME mount, German equatorial.. They provide The Sky X software for a hefty price, which allows one to control the ME. TSX has a feature called Profile, which save data about items like a camera and focuser. The documentation on Profile how to use it, but it's...
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    Bisque Software for Astronomy SkyX

    I'm taking a shot that this forum might know about the software in the title, SkyX. My question is about a feature called Profile. I need some help using it.
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    Calculating Torque on a Drawbridge: A Challenging Project

    Believe me this is really a challenging project. I'm putting in a control system that will automate the movement of the shutter, and dome rotation. I was lucky to find someone who has the knowledge to do it. As far as I know there are only two people in the contiguous 48 states that can do it...
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    Calculating Torque on a Drawbridge: A Challenging Project

    1. outward 2. lowers and raises with winch, just like a drawbridge. 3. not used when there are strong winds. I was wrong about where winch, motor, clutch. It is at the bottom. Thanks for the interest. The technician I'm working with resolved issues I had.
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    Calculating Torque on a Drawbridge: A Challenging Project

    This is a practical application that I'm facing. It's been a long time since I did any physics. It would be interesting to know what the calculations are. I don't think it's tension. Torque is measured by force times lever arm. OK, here's the application. See the image file. The clutch is...
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    Calculating Torque on a Drawbridge: A Challenging Project

    Suppose I have a four foot high rectangular slab that weighs 100 pounds, and is hinged at the bottom. The slab is essentially a draw bridge. It is anchored at the by two chains on either side. A winch can lower and raise it. Suppose the slab is at 45 degree angle. How much torque is there in the...
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    LSQ Notation: Unusual Notation Explained by Herget 1948

    See the two pages I've attached. 47 and 48. I'm trying to understand the notation used for the (129) equations. A hint is just below the equations. ( ) ∑. These pages are describing the LSQ method. (aa), etc. aa doesn't make sense to me. Herget devised this notation in 1948. Comments
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