This constellation, abbreviated as 'oph' has how many right ascension (in hm)?
CREATE TABLE table_177766_1 (right_ascension__hm_ VARCHAR, abbre­viation VARCHAR)
SELECT COUNT(right_ascension__hm_) FROM table_177766_1 WHERE abbre­viation = "Oph"
<s>[INST] Write mssql query to answer the following question given the database schema. Schema: CREATE TABLE table_177766_1 (right_ascension__hm_ VARCHAR, abbre­viation VARCHAR) Question: This constellation, abbreviated as 'oph' has how many right ascension (in hm)? [/INST] SELECT COUNT(right_ascension__hm_) FROM table_177766_1 WHERE abbre­viation = "Oph" </s>