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Home Built Optical Planetariums
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Pinned: Topic has attachmentsBulb Table
Lamp Data
Ken Miller
5,713
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
4,601
26th August 2008 - 07:33 PM
Last post by: ltkhoover
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Topic has attachmentsFrom: Jamie's Planetarium  * 123» 5
From Topic ID: 25344
Philostopher1
2,882
Yesterday, 11:07 AM
Last post by: Philostopher1
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Topic has attachmentsDIY simple Lenses
Making lenses for better stars
Philostopher1
161
3rd April 2018 - 06:37 PM
Last post by: Philostopher1
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Topic has attachmentsPin Hole Light source via LED  * 12
Cree LEDs, Smartphone lenses and light pipe homogenizers.
Philostopher1
888
19th February 2018 - 10:02 AM
Last post by: Ron Walker
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Scott T
301
16th February 2018 - 03:13 AM
Last post by: mrgare5050
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Who built this?
Home made Star projector UK
Philostopher1
166
5th January 2018 - 11:19 AM
Last post by: Ron Walker
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Who built this?
Home made Star projector UK
Philostopher1
93
3rd January 2018 - 03:55 PM
Last post by: Philostopher1
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Planetarium Orrery Automata
Van Cleef and Arpels Planetarium \ Orrery Watch
Philostopher1
251
16th November 2017 - 03:27 PM
Last post by: Strgzr
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Light Emitting Plasma Sources
Plasma emitters as potential point sources
Philostopher1
234
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
308
10th August 2017 - 12:28 PM
Last post by: Ron Walker
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Ron Walker
52,048
6th July 2017 - 10:57 AM
Last post by: Ron Walker
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heptacloro
499
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
3,475
2nd December 2016 - 04:04 AM
Last post by: mrgare5050
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Topic has attachmentsNew Planetarium
From starball to operational planetarium
tomoarnold
2,821
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
3,131
21st April 2014 - 11:03 AM
Last post by: Ron Walker
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Charlie Miller
4,141
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
51,758
9th January 2013 - 10:44 AM
Last post by: Ron Walker
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Ken Miller
22,907
27th December 2012 - 11:13 AM
Last post by: mrgare5050
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Charlie Miller
1,690
24th December 2012 - 10:46 AM
Last post by: Ron Walker
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mrgare5050
239,285
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
14,714
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
14,133
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
6,307
20th September 2011 - 12:35 PM
Last post by: Ron Walker
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Martin Lewicki
2,892
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
4,436
20th July 2011 - 08:36 PM
Last post by: mrgare5050
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sgrijalva
64,762
29th May 2011 - 12:18 AM
Last post by: Higekita
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davis100
7,075
25th April 2011 - 06:48 AM
Last post by: SteveDurham
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mrgare5050
44,476
22nd April 2011 - 05:02 AM
Last post by: mrgare5050
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Pin Hole Projector Calculations
Planetarium Projector - Pin Hole Calculations
Parag
4,764
24th February 2011 - 10:44 PM
Last post by: Parag
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