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Home Built Optical Planetariums
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Pinned: Topic has attachmentsBulb Table
Lamp Data
Ken Miller
5,103
5th March 2015 - 10:56 AM
Last post by: Ron Walker
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Pinned: Drill Bit Table for Star Holes
How Low Can You Go!
mrgare5050
4,261
26th August 2008 - 07:33 PM
Last post by: ltkhoover
Forum Topics
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Light Emitting Plasma Sources
Plasma emitters as potential point sources
Philostopher1
31
17th August 2017 - 10:42 AM
Last post by: Ron Walker
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Topic has attachmentsLEDs with hexagonal emitters
no square stars!
Philostopher1
69
10th August 2017 - 12:28 PM
Last post by: Ron Walker
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Topic has attachmentsPin Hole Light source via LED
Cree LEDs, Smartphone lenses and light pipe homogenizers.
Philostopher1
206
11th July 2017 - 10:56 AM
Last post by: Ron Walker
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Ron Walker
47,788
6th July 2017 - 10:57 AM
Last post by: Ron Walker
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heptacloro
309
16th December 2016 - 11:20 AM
Last post by: Ron Walker
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Topic has attachmentswhat is it all about...?
strange fascination about the stars inside a room
Bossard
2,993
2nd December 2016 - 04:04 AM
Last post by: mrgare5050
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Topic has attachmentsNew Planetarium
From starball to operational planetarium
tomoarnold
2,485
29th April 2014 - 03:32 PM
Last post by: moonmagic
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Topic has attachmentsBulb question
what bulb is best for a small projector?
Ron Walker
2,470
21st April 2014 - 11:03 AM
Last post by: Ron Walker
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Charlie Miller
3,558
4th November 2013 - 04:03 PM
Last post by: tomoarnold
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Topic has attachmentsBuilding a home planetarium from scratch  * 123» 6
or, what possessed me to start this
Ron Walker
47,615
9th January 2013 - 10:44 AM
Last post by: Ron Walker
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Ken Miller
20,816
27th December 2012 - 11:13 AM
Last post by: mrgare5050
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Charlie Miller
1,519
24th December 2012 - 10:46 AM
Last post by: Ron Walker
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mrgare5050
235,864
19th October 2012 - 10:06 AM
Last post by: Ron Walker
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Topic has attachmentsGerman youngsters win science fair with planetarium  * 12
homemade optical starball system
albert
13,393
18th August 2012 - 02:45 PM
Last post by: Ron Walker
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Topic has attachmentsModifying a Spitz Jr.  * 12
I am still not finding some basic information
flyboybc
12,677
7th August 2012 - 04:21 PM
Last post by: Ron Walker
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Thoughts on building a star-cylinder projector
manuscript under development
Charlie Miller
5,730
20th September 2011 - 12:35 PM
Last post by: Ron Walker
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Martin Lewicki
2,642
19th August 2011 - 02:00 AM
Last post by: Martin Lewicki
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Topic has attachmentsComparing Stinger and Ray-o-Vac light bulbs
Stinger electric specs needed
Charlie Miller
4,190
20th July 2011 - 08:36 PM
Last post by: mrgare5050
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sgrijalva
61,736
29th May 2011 - 12:18 AM
Last post by: Higekita
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davis100
6,572
25th April 2011 - 06:48 AM
Last post by: SteveDurham
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mrgare5050
41,868
22nd April 2011 - 05:02 AM
Last post by: mrgare5050
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Pin Hole Projector Calculations
Planetarium Projector - Pin Hole Calculations
Parag
4,464
24th February 2011 - 10:44 PM
Last post by: Parag
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Tim Mitchell
23,869
25th January 2011 - 03:12 PM
Last post by: mtmannh
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jmarmor
12,967
20th January 2011 - 08:37 AM
Last post by: Charlie Miller
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Bulb needed for 6m dome
Can anybody help?!?
marode
2,112
10th October 2010 - 11:07 AM
Last post by: Ron Walker
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Bossard
3,374
25th July 2010 - 01:44 PM
Last post by: Ron Walker
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PaulK
1,943
4th July 2010 - 03:22 PM
Last post by: PaulK
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joaocbm
3,552
22nd February 2010 - 02:15 PM
Last post by: Ron Walker
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