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Hubble Space Telescope
COS Airglow

In the ultraviolet, the sky background contains important contributions from airglow lines, which vary from day to night and as a function of HST orbital position. Airglow lines may be an important consideration for spectroscopic observations at wavelengths near the lines. Both FUSE and HUT observed a variety of FUV airglow lines which may be present in COS data. Please click here to view this list.

Observations

We have received requests for high-S/N observations of the geocoronal Lyman-alpha line profile observed with the G130M and G140L gratings. Such observations would allow users to model and subtract the line wings from their spectra. On this Web page, we provide a listing of both deliberate and serendipitous airglow observations. If you discover any others, please let us know! Email help@stsci.edu To retrieve these datasets please use the HST archive.

Deliberate Airglow Observations

In these programs, COS airglow exposures were taken in parallel with STIS calibration observations.

ProposalAssociationLifetime
Position
Exposure TimeOptical ElementCentral Wavelength
11860LB871006012800sG140L1105
11999LBC40208012500sG130M1309
11999LBC40404011388sG130M1309
12414LBN6E206012900sG130M1309
12414LBN6E306012800sG130M1291
12414LBN6E406012800sG140L1105
12775LBW3E106012800sG130M1291
12775LBW3E206012800sG130M1291
12775LBW3E406022800sG140L1105
13145LC4KE106022900sG130M1291
13145LC4KE206022560sG130M1291
13145LC4KE306022900sG130M1291
13145LC4KE406022900sG130M1291
13548LCETE106022900sG130M1327
13548LCETE206022272sG130M1327
13548LCETE306022900sG130M1327
13548LCETE406022900sG130M1327
13548LCETE506022900sG130M1327
13994LCQJE306032900sG130M1291
13994LCQJE406032900sG130M1291
14429LD1CE106032900sG130M1327
14429LD1CE206032900sG130M1327
14429LD1CE306032900sG130M1291
14429LD1CE406032900sG130M1291

Serendipitous Airglow Observations

Observations will be posted as they are released to the public.

ProposalAssociationLifetime
Position
Exposure TimeOptical Element Central Wavelength
11522LB620301011150sG130M1291
11522LB620302011150sG130M1318
11616LB6B290101954sG130M1291
11616LB6B290201954sG130M1327
11616LB6B290301642sG160M1577
11616LB6B290401642sG160M1600
11616LB6B290501642sG160M1623
11727LB5B0101012070sG130M1309
11727LB5B0102012830sG160M1623
12034LBGH040101810sG130M1309
12034LBGH040201810sG130M1327
12034LBGH040301454sG160M1589
12034LBGH0404011280sG160M1600
12034LBGH0405011495sG160M1577
12169LBIYAM01011460s G130M 1291
12426LBNM0101012800sG160M1577
12426LBNM0102012850sG160M1589
12426LBNM0103012750sG160M1600
12426LBNM0104012800sG160M1611
12426LBNM0105013350sG160M1623
12275LBH40801011381sG130M1327
12275LBH40802015926sG130M1291
12275LBH45801011381s G130M 1327
12275LBH4580201 5926sG130M 1291
12870LC1VA801026944sG140L1105
13302LC800801025460sG140L1105
13456LC9502010216549sG160M1577