Scansion of Iliad I.14

[Aether]

στέμματ᾿ ἔχων ἐν χερσὶν ἑκηβόλου Ἀπόλλωνος
Iliad I.14
I cannot figure how to scan this line. All I doubt is that βό in ἑκηβόλου is long. Could someone tell me how to scan this line and why?

[modus.irrealis]

The trick is that long vowels and diphthongs can be shortened before other vowels (the technical term is "epic correption"), so the -ου of ἑκηβόλου scans short, and then you have to remember that the α of Ἀπόλλων can be either long or short, so altogether it's

- v v | - - | - v v | - v v | - - | - -

[Aether]

Thanks for your prompt answer!
Oh, I have checked Pharr's again, and notieced 571. The variations of Quantily.
It seems that scansion in Homer's is more variable than in Aeneid.