... elements of the galaxy image to the slit of the spectrograph, together with 16 (17) additional fibers that transmit the sky background light taken at a distance of 40 from the galaxy, so the sky spectra are obtained together with those of the target ...
... Sky Contribution In the analysis of objects of low surface brightness, special ... procedure the sky model is constructed by recalculating the spectrum of the sky from ...
... A separate bundle of optical fibers "brings" the emission from an empty night-sky field approximately 4 away from the object being observed to the slit; the night-sky spectra are located on the CCD detector between the object spectra, are reduced together ...
... The group occupies nearly a degree on the sky; our recent paper [18] shows a portion ... An exposure of a dawn sky was taken for flat-fielding. ... from the center and spectra of the twilight sky taken the same night with the same ...
... form 2011 September 21 ABSTRACT By undertaking deep long-slit spectroscopy with the ... Deep fields of the Hubble Space Telescope have provided high-resolution images of ...
... min exposure of an "empty" area of sky to be subtracted from the integrated object ... the different transmissions of the microlenses using a spectrum of the morning sky ...