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Klingon Deathray/travelscope

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#1 Mirzam

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Posted 31 October 2010 - 08:38 AM

To make my interstellar plundering trips more efficient I decided to construct a new Deathray/travelscope.

Earthling shown for scale; note dissection table in background.

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#2 Mirzam

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Posted 31 October 2010 - 08:39 AM

The Deathray/travelscope uses a primary optic (d=250 mm; f/l =1400 mm) fabricated by slave labor on planet Delmarva.

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#3 Mirzam

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Posted 31 October 2010 - 08:43 AM

Because the focal ratio of 5.5 is quite long for a Deathray/travelscope, several small mass units were added to the lower end to achieve balance. These can always be used for reactor fuel if necessary.

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#4 Mirzam

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Posted 31 October 2010 - 08:44 AM

The upper module of the Deathray/travelscope uses a scavenged finder from the Rigel system and a very lightweight 31.75 mm HC-1 focuser from KineOptics. The temperature sensor and diode indicator light of the Astrosystems secondary dew heater are visible on the spider hub.

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#5 Mirzam

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Posted 31 October 2010 - 08:45 AM

The Earthling fabricated a photonic shroud using primitive technology--incorporating something called an "embroidery hoop". It works well as we shall see. The Earthling received a double portion of gruel as a reward.

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#6 Mirzam

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Posted 31 October 2010 - 08:46 AM

Collimating the Deathray/travelscope.

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#7 Mirzam

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Posted 31 October 2010 - 08:46 AM

Another view of the Deathray/travelscope with the photonic shroud in place. Landing pod in background.

Happy Halloween :mrevil:

Mirzam

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#8 cheapersleeper

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Posted 31 October 2010 - 09:55 AM

Will give you 867 Feldar for the earthling. Mine ran away.

#9 magic612

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Posted 31 October 2010 - 09:55 AM

Very creative! Oh, and the scope too. ;)

#10 hron

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Posted 31 October 2010 - 10:00 AM

Looking good, Jim!

#11 Mirzam

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Posted 31 October 2010 - 10:15 AM

Will give you 867 Feldar for the earthling. Mine ran away.


That Earthling is in very good condition. Worth at least 900 Feldar. Enjoys making photonic shrouds too.

#12 rboe

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Posted 31 October 2010 - 11:34 AM

No selling the forum. Please take your discussion off line or offer an ad in Shop n Swap or the Classifieds.

It keeps the Ferengi at bay.

#13 Mirzam

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Posted 31 October 2010 - 11:54 AM

"... offer an ad in Shop n Swap or the Classifieds"

Good Idea!

Incidentally, the aliens over at Moonlight Telescope made me some nifty connectors that allow truss tubes to be split in half and reconnected securely back together. This way someone without their own spaceship can simply toss the shorter tubes into a suitcase.

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#14 cheapersleeper

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Posted 31 October 2010 - 12:16 PM

Not selling. Technically an indenture contract.

#15 RedIrocZ-28

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Posted 31 October 2010 - 12:46 PM

Are you wearing the Vibram 5 finger shoes?

#16 Mirzam

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Posted 31 October 2010 - 01:06 PM

I only wear them on Halloween. Klingon bounty hunters are not slaves to fashion.

#17 Keith Howlett

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Posted 04 November 2012 - 12:49 PM


*** Klingon bounty hunters are not slaves to fashion. ***

It's just not true is it. ;)

Cool scope and trailer. Is that your cool dome behind the earthling? :bow:

Keith

#18 RossSackett

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Posted 04 November 2012 - 02:14 PM

Sweet scope.

--Ross

#19 Mirzam

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Posted 04 November 2012 - 02:35 PM

Thanks!

The dome was built around 20 years ago by the previous property owner and now houses my 20" dob.

The travelscope went with us to Chile in early 2011 and worked really well. I'm currently finishing up a 14" to take on the next trip.

JimC

#20 Napersky

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Posted 05 November 2012 - 11:53 AM

Is the Dome aluminum? or steel?

Aircraft aluminium should be strong enough to build a good dome.

Great title to your post.

#21 Mirzam

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Posted 05 November 2012 - 02:51 PM

The dome is aluminum skin over aluminum T channel that has been bent to the proper radius. The skin is riveted on. It's really impressive to me how the previous owner figured out how to do this. The only real drawback is that the plywood base ring has sagged in between the wheels--which probably could have been avoided by using a closer wheel spacing. I may try to add some more wheels but there is a risk of popping some things loose that have adjusted to the current state gradually for a long time.

JimC

#22 glennnnnnn

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Posted 05 November 2012 - 08:01 PM

That's a really scary-looking deathray. What you aren't showing, obviously is the photonic nebulizer pulsation unit.
A gentle reminder: that if you write your name or any annoying messages on our Moon, you will get in big trouble!!! Even for a Klingon!!

#23 Keith Howlett

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Posted 06 November 2012 - 04:35 AM

Ah, I had a sagging fibreglass ring - I stiffened it up by bolting a metal angle ring to the top, problem solved.

Keith

#24 Mirzam

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Posted 06 November 2012 - 07:30 AM

Actually, the top ring is baltic birch. I designed this scope with an ultra-light 1.25" focuser and the intention to use only relatively lightweight eyepieces and no Paracorr. I had to stiffen up the metal focuser board with some aluminum angle, but after that there was no significant flexure. The system is also fairly forgiving at f/5.5.

Doh! Now I realized that you are talking about the observatory ring! Good idea to use the metal angle. What size did you use and how did you bend it into a ring?

JimC

#25 Pinbout

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Posted 06 November 2012 - 09:11 AM

where I used to buy my metal from, they would roll any 16' long piece that their machine could handle for $90/ea.

a rolled piece would make a normally bendable 16' run fairly stiff. put mending plates over any seams.






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