2025 Deep Sky 3rd Place - M51Whirlpool Galaxy
Allan Berzins
Tuesday, 1 April 2025
Celestron C14 with ASI 2600mc
10 x 30 sec exposures for central area No filter 4 hrs of 5 min exposures with no filter for the outer region 5 hrs of 5 min exposures through an IDAS NBZ-II for Halpha / OIII