Observation by Tim Haymes: Graze Occultation of double star SAO9396...

Uploaded by

Tim Haymes

Observer

Tim Haymes

Observed

2017 Aug 16 - 02:34

Uploaded

2017 Aug 30 - 10:48

Objects

The Pleiades (M45)
Conjunction
The Moon

Equipment

20cm F/4
LXD55 mount
x2 Barlow
WATEC 910HX video / Digital tape
SPRITE GPS time inserter

Exposure

0.04s (25fps)

Location

Braywick, Maidenhead (mobile set-up)

Target name

Moon

Title

Graze Occultation of double star SAO93961 in Pleiades

About this image

This early morning graze of a 6.7 mag star (HU 1080) ocured at a favourable cusp angle of 6 degress (Northern Limit) with the Moon only 38% sunlit. The most interesting aspect was the double star. The telescope was set-up in a carefully planed location which was hoped would reveal some interesting graze phenomena. I was not disappointed. On the light curve I have drawn a green line that represents the appearance of the fainter companion (while the brighter is occulted). The red line is both stars having appeared. The duration of all the contacts was 27 sec. Graze timings are sent to Japan for inclusion in the IOTA database.

( The vertical bands on this single frame have not affected the measurements)

Files associated with this observation

Graze Frame 2_with LC.jpg (145.0 kB)

Like this image

David Basey, Jeremy Shears, Peter Carson, Mike Olason, Maurice Collins, Dawson

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