<html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"></head><body ><div>The orbitors used with the early orths (because of image burn-in) were were not used on my NBC 41s, because before the late 60s the later orthicons were not subject to halo or burn. The orbitor was a piece of flat glass with non-parallel surfaces located inside the camera just behind the turret, in front of the beam splitter (dichroic & front-surface mirrors in those days). Even turned on (by the switch on the "CCU", the clock motor's 1 RPM speed was basically un-detectable.</div><div><div style="font-size:100%">Thanks! <br>-mike boland<br></div></div> <br>Dave Sieg <dave@zfx.com> wrote:<br><div dir="ltr">Looks to me like a synchronous gearhead motor like would drive an orbiter but I don't see how that would work unless it actually moved the lens. Imagine trying to keep your shot framed with a motor constantly moving the image somewhere else! I once saw a TK-11 with two motors like that attached to centering pots in the camera head. We forget how far we've come!</div>
<div class="gmail_extra"><br><br><div class="gmail_quote">On Tue, May 6, 2014 at 5:44 AM, Brian Summers <span dir="ltr"><<a href="mailto:gideon4@summershome.co.uk" target="_blank">gideon4@summershome.co.uk</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"><br>
This has been an interesting thread, Thanks very for posting the pictures.<br>
<br>
The Gizmo on the lens is hard to identify, the lens is Not a zoon and the<br>
attachment of the device at the front of the lens is wrong for any kind of<br>
iris or focus drive.<br>
<br>
Looking carefully at the best resolution pics from Bob the cable does not<br>
enter the camera? It seems to loop through one of the rear feet on the<br>
camera base and head off down and else ware.<br>
<br>
It's a bit of a mystery, it could be a microphone or maybe a sensor for a<br>
remote lightmeter, don't forget this is an experimental prototype camera and<br>
the picture is a posed one rather than a real production use.<br>
<br>
Best regards<br>
<br>
Brian Summers<br>
Virtual Museum of the Broadcast TV Camera<br>
Camberley,<br>
England.<br>
<br>
<a href="http://www.tvcameramuseum.org" target="_blank">www.tvcameramuseum.org</a><br>
<a href="mailto:brian@tvcameramuseum.org">brian@tvcameramuseum.org</a><br>
Phone <a href="tel:%28%2B44%29%2001276677879" value="+441276677879">(+44) 01276677879</a><br>
<br>
<br>
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</blockquote></div><br><br clear="all"><div><br></div>-- <br>Dave Sieg<br><a href="http://www.linkedin.com/in/davesieg" target="_blank">www.linkedin.com/in/davesieg</a><br><a href="http://www.davesieg.com" target="_blank">www.davesieg.com</a><br>
<a href="http://www.scanimate.net" target="_blank">www.scanimate.</a>com<br>
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