CREATE TABLE table_21908 ("Rank" FLOAT, "Family" CLOB, "Abbre\\u00adviation" CLOB, "Constellation" CLOB, "Area  ( sq.deg. ) " CLOB, "Area  ( msr ) " CLOB, "Per\\u00adcent\\u00adage" CLOB, "Right ascension  ( hm ) " CLOB, "Decli\\u00adnation  ( dm ) " CLOB, "Quad" CLOB)

This constellation, abbreviated as 'oph' has how many right ascension (in hm)?
SELECT COUNT("Right ascension (hm)") FROM table_21908 WHERE "Abbre\u00adviation" = 'Oph'
SELECT COUNT("Right ascension (hm)") FROM "table_21908" WHERE "Abbre\u00adviation" = 'Oph'