Embed Size (px)
DESCRIPTION
A comparison of fits and clearances for Cassegrain shutter models current under study, using beam envelopes for ‘Scientifically useable’ light developed from Mike Lampton’s TMA-65 Ray Traces. Spherical Mask Shutter assembly. Modified spherical Mask Shutter Assembly. Flat Mask shutter Assembly. - PowerPoint PPT Presentation
Citation preview
Robin Lafever 27 May 2004
1
TMA-65 Cassegrain shutter fitup
A comparison of fits and clearances for Cassegrain shutter models current under study, using beam envelopes for ‘Scientifically useable’ light developed from Mike Lampton’s TMA-65 Ray Traces
Spherical Mask Shutter assembly
Modified spherical Mask Shutter Assembly
Flat Mask shutter Assembly
Robin Lafever 27 May 2004
2
TMA-65 Cassegrain shutter fitup
TMA-65
Robin Lafever 27 May 2004
3
TMA-65 Cassegrain shutter fitup
TMA-65 Cassegrain Focus
Robin Lafever 27 May 2004
4
TMA-65 Cassegrain shutter fitup
Detailed Beam Envelope
Detector assembly43.16 mm pitch
Generic Fold-Flat mirrorWith “scientifically useable” light footprint
Tertiary mirror
Spherical MaskAt the Cassegrain focus
Beam envelope constructed fromMike Lampton’s Ray Traces
Robin Lafever 27 May 2004
5
TMA-65 Cassegrain shutter fitup
Spherical Mask Shutter assemblyClosed
‘Stovepipe’ Baffle Assembly
Robin Lafever 27 May 2004
6
TMA-65 Cassegrain shutter fitup
Spherical Mask Shutter assemblyOpen
Open shutters interfere with beam envelope
‘Stovepipe’ Baffle Assembly
Robin Lafever 27 May 2004
7
TMA-65 Cassegrain shutter fitup
Spherical Mask Shutter assembly Closed
Robin Lafever 27 May 2004
8
TMA-65 Cassegrain shutter fitup
Modified spherical Mask Shutter Assembly Closed
Shutter blades and motorsMoved up near knife blade
Robin Lafever 27 May 2004
9
TMA-65 Cassegrain shutter fitup
Spherical Mask Shutter assembly Open
Robin Lafever 27 May 2004
10
TMA-65 Cassegrain shutter fitup
Modified spherical Mask Shutter Assembly Open
‘Stovepipe’ Baffle Assembly
Robin Lafever 27 May 2004
11
TMA-65 Cassegrain shutter fitup
Modified spherical Mask Shutter Assembly Open
Open shutters clearthe beam envelope
Robin Lafever 27 May 2004
12
TMA-65 Cassegrain shutter fitup
Modified spherical Mask Shutter Assembly Closed
Robin Lafever 27 May 2004
13
TMA-65 Cassegrain shutter fitup
Modified spherical Mask Shutter Assembly Open
Robin Lafever 27 May 2004
14
TMA-65 Cassegrain shutter fitup
Flat Mask shutter Assembly Open
‘Stovepipe’ Baffle Assembly
Robin Lafever 27 May 2004
15
TMA-65 Cassegrain shutter fitup
Flat Mask shutter Assembly Closed
‘Stovepipe’ Baffle Assembly
Robin Lafever 27 May 2004
16
TMA-65 Cassegrain shutter fitup
Flat Mask shutter Assembly Open
Innermost corners of the mask knife edgesAre at the Cass focus.
Robin Lafever 27 May 2004
17
TMA-65 Cassegrain shutter fitup
Flat Mask shutter Assembly Closed
