ALPY guide unit

Forums Spectroscopy 34 Cygni ALPY guide unit

Alun Halsey

Hi Robin.

 Thank you,wanted to arrange a way in that I can take lo-res and hi-res in a session without the hassle of swopping out spectroscopes and re-arranging the counterweights etc. So I have the SCT carrying the hi-res unit and the 80mm taking the ALPY /guide unit on a side by side dual bar. Both scopes are aligned so I know that if star is center of ALPY slit then it will be in the slit of the hi res unit. Then I just guide as if I were using the ALPY,seems to work so far and I’ve managed 5min exposure times with no problems:)