Interference filters in La Palma
The datasheets are located in the observing room in La Palma in a marked
blue file.
CW = Center of Wavelength
BW = Bandwidth
CN Band (marked "CN Band DK" and "387.5/1.0 nm 2900 Barr")
- CW = 3874 A
- BW = 10
- Size = 2 inches
- Barr , August 2000
- Datasheet : Yes
- Peak transmission : 77 %
Ca II K (marked : ".... 3300 Barr")
- CW = 3934.2 A
- BW = 1.5
- Size = 2 inches
- Barr , August 2000
- Datasheet : Yes (measurements at 23 degr Celsius)
- Peak transmission : 31 %
- "3300" is LOT NO.
Ca II H
- CW = 3968.8 A
- BW = 1.1
- Size = 2 inches
- Barr, April 2000
- Datasheet : Yes (measurements at 23 degr Celsius)
- Peak transmission : 44%
- Should operate at a tilt angle of 1.3 degrees to cover line center
Ca II H
- CW = 3968.8 A
- BW = 2.9
- Size = 2 inches
- Barr, April 2000
- Datasheet : Yes
- Peak transmission : 56%
G-Band - ANDV6773 - Lockheed
- CW = 4305.6 A, BW = 10.8 (50%), Andover, Sep 1999
- Datasheet : Yes
- Peak transmission : 46.71 %
- FWHM coordinates : 430.020 - 4310.96
- Angle of incendence = 0 degr.
- Better than the other G-band filter
G-Band - ANDV3266 AM-21020 I.Q.
- CW = 4305.13
- BW = 11.77 , Andover, June 1993
- Datasheet : Yes
- Peak transmission : 46.37 %
- Angle of incendence = 0 degr.
- Has pinhole leak, can be used with M1.6 camera
G-continuum - ANDV5405 - Lockheed Martin
- CW = 436.39 nm
- BW = 1.15 nm (50%), 2,06 nm (10%), 3.76 nm (1%)
- FWHM coordinates : 435.815 - 436.961 nm
- Peak transmission : 36.37%
- measurements at 0 degrees angle of incidence, temperature = 23 degr C
- LOT number : 32944
- Andover, May 21, 1997
- datasheet : Yes
487.7 nm Continuum Filter
- CWL = 487.7 nm
- HBW 8.0 nm, Ealing, August 1997
- Peak transmission : 52%
H-alpha, 10 Angstrom filter
- Marking on side : 656.5/1.0 NM 3002 Barr #1
- CWL = 6565.2 A
- BW = 9.7 A, Barr, July 2002
- Peak transmission = 82%
- Wavefront : rms = 0.023
- Peak-Valley = 0.15 waves
H-alpha, 10 Angstrom filter
- Marking on side : 656.5/1.0 NM 3002 Barr #2
- CWL = 6565.8 A
- BW = 9.8 A, Barr, July 2002
- Peak transmission = 83%
- Wavefront : rms = 0.025
- Peak-Valley = 0.15 waves
The Halle Lyot H-alpha Filter.
A complete inventory of available interference filters in HTML and excel formats.
Time-stamp: <2003-10-03 14:23:05 dettori>
Peter Dettori < dettori@astro.su.se
>