Celestron 8SE XLT Celestron 6SE + Antares f/0.63 focal reducer Celestron SE Goto Mount Kson 1026 ED Carbon Fibre tube Skywatcher Synscan AZ Goto Various EPs (Baader Mk III Zooom, BST, Televue, X-Cel LX)
Quote:As mentioned in another thread, Zeta Herculis is now at 1.3" separation - it's a short-period, fast-moving binary. A week ago I observed it with a 140mm refractor, the companion visible at 160x, with neat clean separation at 230x. And, yes, the seeing was good at the time.
Quote:As mentioned in another thread, Zeta Herculis is now at 1.3" separation - it's a short-period, fast-moving binary.
"You're not afraid of the dark, are you?" - Riddick "The best scientists are humble. They seek to understand, not to ensure their legacy, but merely to understand." - Mori
Quote:You can find the current PA and separation of Zeta Herculis HERE (use the data to the left of the diagram under Orbital Elements), which comes from the WDS Ephemerides table, which can be found HERE. In the first column on the left, scroll down to the WDS coordinates 16413+3136, which are arranged in numerical order.John
Quote:The Stelladoppie site is a great resource, but there are errors you have to watch for that apparently come from the way the information is pulled in from the WDS. For a quick look at a double star's data, it's much quicker than scrolling through the WDS. But for essential data I follow the same route Fred does.John
16" F/4.2 Teeter/Zambuto Dob Tak Mewlon 250 SV130EDT Powerstar C8 1960s Bushnell 60mm f12 Refractor Nikon 8x30 A SkyMaster 15x70 Sphinx SXD CG5-ASGT UA Unistar Deluxe