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Home Built Optical Planetariums
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Pinned: Topic has attachmentsBulb Table
Lamp Data
17
 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!
4
 mrgare5050
4,601
 26th August 2008 - 07:33 PM
Last post by: ltkhoover
Forum Topics
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Topic has attachmentsFrom: Jamie's Planetarium  * 123» 5
From Topic ID: 25344
97
 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
13
 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.
21
 Philostopher1
888
 19th February 2018 - 10:02 AM
Last post by: Ron Walker
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16
 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
3
 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
0
 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
6
 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
1
 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!
3
 Philostopher1
308
 10th August 2017 - 12:28 PM
Last post by: Ron Walker
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56
 Ron Walker
52,048
 6th July 2017 - 10:57 AM
Last post by: Ron Walker
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1
 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
13
 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
5
 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?
7
 Ron Walker
3,131
 21st April 2014 - 11:03 AM
Last post by: Ron Walker
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16
 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
119
 Ron Walker
51,758
 9th January 2013 - 10:44 AM
Last post by: Ron Walker
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40
 Ken Miller
22,907
 27th December 2012 - 11:13 AM
Last post by: mrgare5050
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2
 Charlie Miller
1,690
 24th December 2012 - 10:46 AM
Last post by: Ron Walker
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208
 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
26
 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
29
 flyboybc
14,135
 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
17
 Charlie Miller
6,307
 20th September 2011 - 12:35 PM
Last post by: Ron Walker
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2
 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
7
 Charlie Miller
4,436
 20th July 2011 - 08:36 PM
Last post by: mrgare5050
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69
 sgrijalva
64,762
 29th May 2011 - 12:18 AM
Last post by: Higekita
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4
 davis100
7,075
 25th April 2011 - 06:48 AM
Last post by: SteveDurham
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92
 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
7
 Parag
4,764
 24th February 2011 - 10:44 PM
Last post by: Parag
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