CREATE TABLE table_28145 ("Camera" CLOB, "Filter" CLOB, "Wavelength" CLOB, "Total exposure time" CLOB, "Exposures" FLOAT)

how many exposures where there when the total exposure time is 105,000s?
SELECT "Exposures" FROM table_28145 WHERE "Total exposure time" = '105,000s'
SELECT "Exposures" FROM "table_28145" WHERE "Total exposure time" = '105,000s'