I was wrong!

• Messages sorted by: [ date ][ thread ][ subject ][ author ]
• Next message: Tony Beresford: "Re: SPOT 1 r BJ"
• Previous message: Bjoern Gimle: ""Encounter" #22285 and #17590"

Yes, Bjorn is quite correct.  Whilst I was trying to calculate the
elevation for the reflection condition at a specific solar depression, the
fact of the geometry is that the satellite evelation must be zero!
The equation I gave

elev = solar depression - 2.alpha

thus become{s

solar depression = 2.alpha

the condition to be met for shadow entry on the horizon in the azimuth
(or ant-azimuth!) of the Sun.  My calculations are thus in error and
should be ignored.  Sorry!

Cheers, Rob
(rmn@aaocbn.aao.gov.au)

• Next message: Tony Beresford: "Re: SPOT 1 r BJ"
• Previous message: Bjoern Gimle: ""Encounter" #22285 and #17590"