I was wondering if I could beg your indulgence on a question of pointing
accuracy. I know there are a few details around already but I wanted to put
this question in most un scientific manner.

Imagine if you will a 10 inch f10 LX200 correctly prepared for an Alt-Az 1
star alignment. It faces south, it is level, the time is correct (so is the
GMT offset). It is 21:30 the location is N22.19 E114.16. The scope reads
+22.19 245.44. The alignment star is Meade #67 Sirius, it is aligned with a
12mm reticle eyepiece.

If I GOTO Meade #41 Rigel and use the Meade 26mm eyepiece to view should
Rigel be close to the centre of the field of view? In my case Rigel is close
to the edge of the FOV. If I GOTO the Moon it is just in the FOV. Hamal
(Meade #17) is not in the FOV.

Sirius and Rigel had angular separation of 23°40'23"
Sirius and the Moon had angular separation of 92°59'20"
Sirius and Hamal had angular separation of 78°51'28"

My main question is, am I expecting too much?, should I not be able to at
least get Rigel close to the centre and Hamal in the FOV? I would most
appreciate some responses that can describe what I should be expecting
visually without relying on an understanding of accuracy in arc
seconds/minutes etc

I often have to use a one star alignment because I am on a balcony with
restricted views. It is not always possible to nip out with the scope so I
get what I can where possible.

Thanks in advance

Andrew

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