The imagers on LCO’S 1m and 2m telescopes use 75mm square filters in 18 or 21 capacity filterwheels. Standard loadout is a complete Johnson-Cousins/Bessell set (UBVRI) and a SDSS/PanSTARRS set (u’g’r’i’z’sYw). The Spectral imager on the 2m telescope at Siding Spring Observatory also contains some narrowband filters: Hα, Hβ, OIII, D51, Astrodon-UV, and Skymapper v.
For an indication on exposure times to use with these filters, use our exposure time calculator.
| Wavelength Center (Å) | Wavelength Width (Å) | Instrument(s) | |
|---|---|---|---|
| Astrodon Photometrics UV | 3697 | 472 | Spectral (2m) |
| Bessell U | 3500 | 500 | Sinistro (1m) |
| Bessell B | 4361 | 890 | Sinistro (1m), Spectral (2m), SBIG (0.4m), QHY600 (0.35m) |
| Bessell V | 5448 | 840 | Sinistro (1m), Spectral (2m), SBIG (0.4m), QHY600 (0.35m) |
| Bessell R | 6407 | 1580 | Sinistro (1m), Spectral (2m) |
| Bessell I | 7980 | 1540 | Sinistro (1m), Spectral (2m) |
| D51 | 5150 | 150 | Spectral (2m) |
| H-alpha | 6563 | 300 | Spectral (2m) |
| H-alpha | 6575 | 65 | QHY600 (0.35m) |
| H-beta | 4860 | 300 | Spectral (2m) |
| OIII | 5007 | 30 | Spectral (2m) |
| OIII | 5015 | 65 | QHY600 (0.35m) |
| SII | 6745 | 65 | QHY600 (0.35m) |
| Pan-STARRS w | 6250 | 4416 | Sinistro (1m), SBIG (0.4m), QHY600 (0.35m) |
| Pan-STARRS Y | 10040 | 1120 | Sinistro (1m), Spectral (2m) |
| Pan-STARRS zs | 8700 | 1040 | Sinistro (1m), Spectral (2m), SBIG (0.4m), QHY600 (0.35m) |
| SDSS u' | 3540 | 570 | Sinistro (1m), Spectral (2m), SBIG (0.4m), QHY600 (0.35m) |
| SDSS g' | 4770 | 1500 | Sinistro (1m), Spectral (2m), SBIG (0.4m), QHY600 (0.35m) |
| SDSS r' | 6215 | 1390 | Sinistro (1m), Spectral (2m), SBIG (0.4m), QHY600 (0.35m) |
| SDSS i' | 7545 | 1290 | Sinistro (1m), Spectral (2m), SBIG (0.4m), QHY600 (0.35m) |
| Skymapper v | 3830 | 60 | Spectral (2m) |
| Solar | 6000 | 2000 | Spectral (2m) |
| Astrodon ExoPlanet | 7000 | 4000 | QHY600 (0.35m) |
| Wavelength Center (Å) | Wavelength Width (Å) | Instrument | |
|---|---|---|---|
| Astrodon Photometrics Bu | 4261 | 887 | |
| Astrodon Photometrics Ic | 8071 | 1623 | |
| Astrodon Photometrics Rs | 6413 | 1425 | |
| Astrodon Photometrics V | 5387 | 964 | |
| Hale-Bopp C2 | 5125 | 125 | Merope (2m) |
| Hale-Bopp C3 | 4060 | 70 | Merope (2m) |
| Hale-Bopp CN | 3871 | 50 | Merope (2m) |
| Hale-Bopp CR | 6840 | 90 | Merope (2m) |
| Hale-Bopp NH2 | 6630 | 40 | Merope (2m) |
| Hale-Bopp OH | 3085 | 75 | Merope (2m) |