NavList:

Greg, you wrote:
"Zero list is correct. This was confirmed by measuring freeboard with a tape measure (42 in. exactly at the beam port and starboard) from the top of the toe rail to the water in dead calm conditions."

Cool. Don't move anything!

"What is the dim star nearly straight above and seen to the left of Vega and the roller furling in the cropped attached image? Declination should be around 33* 25' N
Is that a dim star seen very close by Vega ?"

That Dec doesn't make sense, but if you're talking about the star just to the left and a bit above Vega, about 30 pixels away, I think that's another image of Vega. The two stars at the base of the parallelogram of Lyra also have ghostly doubles (much fainter) at the same orientation and distance. My guess would be that for a small portion of your exposure, the camera was pointed in a slightly different direction. For example, the mechanism that opens the shutter might have induced a slight motion. Or if you started the exposure manually, the camera might have moved a bit.

-FER

----------------------------------------------------------------
NavList message boards and member settings: www.fer3.com/NavList
Members may optionally receive posts by email.
To cancel email delivery, send a message to NoMail[at]fer3.com
----------------------------------------------------------------