Wide Field Deep Survey for QSOs with the Kiso Schmidt Telescope

We have constructed narrowband(NB)/middle-band(MB) filter system consisting of 9 bands and 6 bandsrespectively, based on this fund. Using这些filters，we have carried out survey for QSOs and high redshift galaxies with 2k -ccd camera having the fieldof view(FOV) of 50arcmin × 50arcmin equipped at the Kiso Schmidt telescope.In 1997，QSO emission lines was tried using 9 NB filters with the BW【apprxeq】200【encircledA】andCWs between 4300【encircledA】and 5550【encircledA】. Among about 5000 objects to 20.6 V-magnitude，7 QSO candidates are obtained at redshifts between 2.4 and 3.6.In 1998 and 1999，high redshift galaxies at z【apprxeq】4were searched using the standard filters， B， V，I and the MB filters with the BW【apprxeq】450【encircledA】and CWs between 5750【encircledA】and7950【encircledA】。Among about 10,000 objects in the MB survey，we have detected 10 candidate high redshift galaxies to 21.5 we have detected 10 candidate high redshifts we have detected 10 candidate high redshiftsbetween 3.7 and 4.4.We are going to carry out spectroscopic follow up observation of这些癌症high redshift QSOs and galaxies to confirm their species and redshifts.The experiences of our NB/MBfilter survey at Kiso observatory will contribute to coming big survey such as the Suprime-CamPilot Deep Survey, which employs R23(R；spectral resolution) NB filter system consisting of 20 or more bands，anticipated at the Subaru Telescope in 2000。

We have constructed narrowband(NB)/middle-band(MB) filter system consisting of 9 bands and 6 bands respectively, based on this fund. Using these filters, we have carried out survey for QSOs and high redshift galaxies with 2K-ccd camera having the field of view(FOV) of 50 arcmin × 50 arcmin equipped at the Kiso Schmidt telescope.In 1997, detection of QSO emission lines was tried using 9 NB filters with the BW【apprxeq】200【encircledA】 and CWs between 4300【encircledA】 and 5550【encircledA】. Among about 5,000 objects to 20.6 V-magnitude, 7 QSO candidates are obtained at redshifts between 2.4 and 3.6.In 1998 and 1999, high redshift galaxies at z【apprxeq】4 were searched using the standard filters, B, V, I and the MB filters with the BW【apprxeq】450【encircledA】 and CWs between 5750【encircledA】 and 7950【encircledA】. Among about 10,000 objects in the MB survey, we have detected 10 candidate high redshift galaxies to 21.5 IィイD2ABィエD2-magnitude having redshifts between 3.7 and 4.4.We are going to carry out spectroscopic follow up observation of these candidate high redshift QSOs and galaxies to confirm their species and redshifts.The experiences of our NB/MB filter survey at Kiso observatory will contribute to coming big survey such as the Suprime-Cam Pilot Deep Survey, which employs R23(R ; spectral resolution) NB filter system consisting of 20 or more bands, anticipated at the Subaru Telescope in 2000.