LOT-QuantumDesign
Unser Partner Andover Corp.

Astronomy/UBVRI filters

from Andover

Andover Corporation offers two sets of astronomy/ UBVRI filters - the Johnson/Bessel and the Kron/Cousins types - as standard items. These wideband filters isolate and measure large specific bands of light emitted by astronomical objects. Both types have the same ultraviolet, blue and visible filters but different red and infrared filters. The Johnson/Bessel type is better suited for use with a photomultiplier tube, while the Kron/Cousins type is better suited for use with a Silicon CCD.

Eigenschaften
  • Options for professionals and amateurs alike
  • Ideal for photometric calibration

Spezifikation

General specifications
Size Tolerance +0/-0.25 mm
Glass Thickness 5.0 mm +/-0.1 mm
Bevels Break all sharp edges
Coating Durability Per MIL-C-48497A moderate abrasion
Construction Schott glass substrates (ground and polished) laminated with index-matching epoxy
Optical Specifications
Transmitted Wavefront 1/4 wave or better per 25 mm
Parallelism 30 arc seconds or better
Surface Quality 60/40 or better per MIL-C-675
Optical Quality Image Quality
AR Coatings Exterior surfaces (appropriate to the filter passband)
Johnson/Bessel Filter Specifications Ultraviolet Blue Visible Red Infrared
Nominal CW/L 365 nm 440 nm 520 nm 630 nm 900 nm
Nominal FWHM 60 nm 100 nm 90 nm 120 nm 300 nm
Nominal Transmission > 50% >55% > 70% >70% >70%
Kron/Cousins Filter Specifications Ultraviolet Blue Visible Red Infrared
Nominal CW/L 365 nm 440 nm 520 nm 760 nm 800 nm
Nominal FWHM 60 nm 100 nm 90 nm 250 nm 150 nm
Nominal Transmission > 50% >55% >70% >70% >70%

Johnson/Bessel UBVRI Filters

  Size, Shape, Part Number & Type
Type 25 mm Ø 50 mm Ø 50 mm SQ

(Mounted)
31 mm Ø

(Mounted)
50 mm Ø
Ultraviolet
Blue
Visible
Red
Infrared
JOHN-U-25
JOHN-B-25
JOHN-V-25
JOHN-R-25
JOHN-I-25
JOHN-U-50
JOHN-B-50
JOHN-V-50
JOHN-R-50
JOHN-I-50
JOHN-U-50S
JOHN-B-50S
JOHN-V-50S
JOHN-R-50S
JOHN-I-50S
JOHN-U-31M
JOHN-B-31M
JOHN-V-31M
JOHN-R-31M
JOHN-I-31M
JOHN-U-50M
JOHN-B-50M
JOHN-V-50M
JOHN-R-50M
JOHN-I-50M
5 Piece Sets JOHN-FA-25 JOHN-FA-50 JOHN-FA-50S JOHN-FA-31M JOHN-FA-50M

Kron/Cousins UBVRI Filters

  Size, Shape, Part Number & Type
Type 25 mm Ø 50 mm Ø 50 mm SQ (Mounted)
31 mm Ø
(Mounted)
50 mm Ø
Ultraviolet
Blue
Visible
Red
Infrared
KRON-U-25
KRON-B-25
KRON-V-25
KRON-R-25
KRON-I-25
KRON-U-50
KRON-B-50
KRON-V-50
KRON-R-50
KRON-I-50
KRON-U-50S
KRON-B-50S
KRON-V-50S
KRON-R-50S
KRON-I-50S
KRON-U-31M
KRON-B-31M
KRON-V-31M
KRON-R-31M
KRON-I-31M
KRON-U-50M
KRON-B-50M
KRON-V-50M
KRON-R-50M
KRON-I-50M
5 Piece Sets KRON-FA-25 KRON-FA-50 KRON-FA-50S KRON-FA-31M KRON-FA-50M

Kontakt

Jörg Tobisch
Jörg Tobisch

Kontakt

Quantum Design GmbH

Im Tiefen See 58
64293 Darmstadt
Germany

Telefon:+49 6151 8806-0
Fax:+49 6151 8806920
E-Mail:germany@qd-europe.com
Jörg TobischProdukt Manager - Optik
+49 6151 8806-50
E-Mail schreiben