Your C9.25 and no doubt some good seeing, has delivered resolution that I am very envious of. I just don’t have the seeing conditions to get this level of resolution in images I have tried on close doubles - 4 arc seconds is about my limit.
I have observed Antares’ companion, visually, on several occasions.
Quote:
Originally Posted by Dennis
Thanks David, it took a bit of experimenting with the Exposure/Gain Settings to get the right combination that revealed the secondary without swamping it with the over exposed primary.
Here is a screen capture from a single Frame in Autostakkert4! showing the mag 5.4 secondary some 1.87” from the bloated primary.
SkyTools4 provides the following data on Antares:
Antares (Alpha Sco) is a Multiple Star System.
Magnitude: 1.02
Variability: Mag: V 0.88 to V 1.16
Magnitude: 1.02 (GCVS), B2
Proper Motion:
RA: -10.2 mas/yr
Dec: -23.2 mas/yr
Distance: 600 +/- 190.0 ly
AB: 0.91+5.4 mag.
Indeterminate Orbit: P=900.0 yr.
PA 278° Sep 1.87" (2025.4)
Photometry:
V: 0.910
B-V: 1.840
U-B: 1.330
V-I: 1.550
R-I: 1.230
Cheers
Dennis
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