SDN0002

Allen Davis and Allen Camacho traveled to Janos Technology on April 23, 2001. They met with Doug Ballantine, the Technical Sales Engineer, and Lois M. Eddy, the Quality Assurance Manager. After going over the goals of the inspection of the four uncoated lenses, Ms. Eddy introduced them to Belinda J. Alward who is in charge of Janos inspection. She made a place available for the inspection and the recording of the results.

Janos was not able at that time to check the radii of the lenses, so we agreed we could use the data that Janos had taken when they had the lenses in their setup.

Below are the results of the inspections as verified by Al Camacho and Al Davis and the supporting documentation. Click on thumbnails for a larger view of graphics.

S/N 89-NOAO-4200-1019 ( BaF2 ) CX – CX

	Pre Inspection	Post Inspection
Surface-A	not done	OK	60- 40 Scratch and Dig
Surface-B	not done	OK	60- 40 Scratch and Dig
Outer Diameter	6.260”		S/B 6.2598”+/-0.0031”
Central Thickness	1.4228”		S/B 1.4217” +/-0.0020”
	OVERSIZE BEVELS
Bevels	A = .055”	B = .060”	S/B 0.0197” to 0.0394”
Note 11--Mark “SB1”	To be done after coating		Post Coating
A to D—Run out of B	.0003”		S/B 0.00039” or less
Radii-A Irregularity (see attached photo)	Measurement from Janos Data Sheets_ 11.0685”		S/B 11.0657+/- ? used block tolerance
Radii-B Irregularity (see attached photo)	Numbers from Janos Data Sheets	17.0020”	S/B 17.0067”+/-.0059”
Clear Aperture of Radius-A S/B 5.6535” 90.3% of the Diameter
Clear Aperture of Radius-B S/B 5.5555” 88.7% of the Diameter

	Pre Inspection	Post Inspection
Surface-A	not done	OK	60- 40 Scratch and Dig
Surface-B	not done	OK	60- 40 Scratch and Dig
Outer Diameter	5.2753”		S/B 52756"+/-.0031”
Central Thickness	1.2243”		S/B 1.2244” +/-.0039”
Bevels	A = .025”	B = .025”	S/B .0197” to .0394”
Vertex to Annulus	1.2850"		S/B 1.2874"+/-.0039"
Note 11--Mark “SB3”	To be done after coating		Post Coating
A to D measure Run out of B	.0003”		S/B .00039” or less
C to D measure Run out of A	.0004"		S/B .00079" or less
Radius A Irregularity (see attached photo)	Measurement from Janos Data Sheets 6.0861”		S/B 6.0862+/- .00079"
Radius B Irregularity (see attached photo)	Numbers from Janos Data Sheets 48.5528”		S/B 48.6378”+/-.1024”
Clear Aperture of Radius-A S/B 4.7571” 90.2% of the Diameter
Clear Aperture of Radius-B S/B 4.5047” 85.4% of the Diameter
*Growth line noted in lens*

	Pre Inspection	Post Inspection
Surface-A	not done	OK	60- 40 Scratch and Dig
Surface-B	not done	OK	60- 40 Scratch and Dig
Outer Diameter	6.8090”		S/B 6.8110”+/-.0031”
Central Thickness	1.4193”		S/B 1.4216” +/-.0079”
Bevels	A = .025”	B = .030”	S/B .0197” to .0394”
Note 11--Mark “SR1”	To be done after coating		Post Coating
A to D—Run out of B	.0005” ABOVE TOLERANCE		S/B .00039” or less
Radii-A Irregularity (see attached photo)	Measurement from Janos Data Sheets_ 10.4784”		S/B 10.4728+/- .0079"
Radii-B Irregularity (see attached photo)	Numbers from Janos Data Sheets	20.6009”	S/B 20.6094”+/-.0118”
Clear Aperture of Radius-A S/B 5.8098” 85.3% of the Diameter
Clear Aperture of Radius-B S/B 5.7024” 83.7% of the Diameter
*Growth line noted in lens*

	Pre Inspection	Post Inspection
Surface-A	not done	OK	60- 40 Scratch and Dig
Surface-B	not done	OK	60- 40 Scratch and Dig
Outer Diameter	5.7470”		S/B 5.7480"+/-.0031”
Central Thickness	1.3470”		S/B 1.3429” +/-.0016”
Bevels	A = .030”	B = .025”	S/B .0197” to .0394”
Vertex to Annulus	1.4334"		S/B 1.4311"+/-.0039"
Note 11--Mark “SR3”	To be done after coating		Post Coating
A to D measure Run out of B	.0006” ABOVE TOLERANCE		S/B .00039” or less
C to D measure Run out of A	.0009" ABOVE TOLERANCE		S/B .00079" or less
Radius A Irregularity (see attached photo)	Measurement from Janos Data Sheets 5.4804”		S/B 5.4803+/- .00059"
Radius B Irregularity (see attached photo)	Numbers from Janos Data Sheets 41.7399”		S/B 41.7209”+/-.0315”
Clear Aperture of Radius-A S/B 5.2039” 90.5% of the Diameter
Clear Aperture of Radius-B S/B 4.9094” 85.4% of the Diameter
*Growth line noted in lens*

	Surface "A" S/N 1019 on axis
	Surface "A" S/N 1019 off axis
	Surface "A" 1019 off axis
	Side B S/N 1019 off axis
	Side B S/N 1019 on axis
	Side B S/N 1019 off axis

	Side A S/N 1021 on axis
	Side A S/N 1021 off axis
	Side A S/N 1021 off axis
	Side B S/N 1021 CC Full Aper.

	Side A S/N 1026 1/5 oval 80mm on axis
	Side A S/N 1026 off axis
	Side A S/N 1026 off axis
	Side B S/N 1026 on axis
	Side B S/N 1026 off axis
	Side B S/N 1026 off axis

	Side A S/N 1028 on axis
	Side A S/N 1028 mid zone
	Side A S/N 1028 Edge inside of C.A.
	Side B S/N 1028 full surface growth line

Optical Inspection at Janos 4/24/01

S/N 89-NOAO-4200-1019 ( BaF2 ) CX – CX