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Old 12-06-2025, 02:24 PM
Dennis
Dazzled by the Cosmos.

Dennis is offline
 
Join Date: May 2005
Location: Brisbane
Posts: 11,828
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


Quote:
Originally Posted by h0ughy View Post
Awesome results Dennis. It's clearly a formed disc and not pinpoint star
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