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Old 02-10-2018, 03:20 PM
Wavytone
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Wavytone is offline
 
Join Date: Jul 2008
Location: Killara, Sydney
Posts: 4,147
Sorry my error - I think - there are two entries for Beta Muscae, one at separation 0.8" and the other about 1.4" - depending on epoch - which is most likely tallies with what you saw in the ETX, Andrew James was using a C8. I doubt you split 0.8" with an ETX.

The entry at 0.8" is from the WDS. I'll check that one in my beast as there's clearly an error in one of the catalogues.

Just goes to show how few reliable measures there are on some bright doubles. There was one in my WDS list selection that had just ONE accepted measure. Double star measures are not hard to do from a light-polluted backyard if you have a high-magnification scope and a micrometer.

Last edited by Wavytone; 02-10-2018 at 08:57 PM.
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