Supernova in M51 Measurements
Supernova sn2011dh in M51 was discovered in 1st June 2011, and rapidly observed by many observers around the world, Greek observers were also among those who observed it soon after the discovery, Antony Ayiomamitis was the first one to observe the Supernova from Greece and also the first to measure its brightnes coming up to a magnitude of about 14.456 using as reference stars, stars from the USNO-SA2 stellar catalogue. We also in Elizabeth Observatory used the same catalogue to make brightnes estimations on CCD images taken by our telescopes. Image from mr. Ayiomamitis can be found here
Observations:
Observations by EL-OBS were made with a 80mm Apo Refractor on an HEQ-5 GoTo Equatorial Mount controlled by ASCOM interface and a Atik IC CCD monochrome Camera on Luminance filter. All measurements are made with "MuniWin" Freeware and on 10 image averages from 120 seconds exposures.
Observation of mr. Ayiomamitis were made with an AP 160 F/7.5 Apo Refractor on an Eq-Mount and SBIG-ST10XME CCD Camera, data reduction was made with AIP4Win Software.
Observations of mr. Manousos have been made visualy by observing from a 12" Newtonian F-5.
Observations of mr. Tsikalas have been made visualy by observing from a 16" Newtonian F-4.5.
Observations of mr. Draculacos have been made visualy by observing from a 8" Newtonian.
Observation of mr. Ayiomamitis were made with an AP 160 F/7.5 Apo Refractor on an Eq-Mount and SBIG-ST10XME CCD Camera, data reduction was made with AIP4Win Software.
Observations of mr. Manousos have been made visualy by observing from a 12" Newtonian F-5.
Observations of mr. Tsikalas have been made visualy by observing from a 16" Newtonian F-4.5.
Observations of mr. Draculacos have been made visualy by observing from a 8" Newtonian.