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The old favourite again, the Andromeda galaxy. WO 80mm refractor with .8 focal reducer and ALP filter. Canon eos 400. 21x2min exps iso 1600. David Godwin

The old favourite again, the Andromeda galaxy. WO 80mm refractor with .8 focal reducer and ALP filter. Canon eos 400. 21x2min exps iso 1600. David Godwin

From: Wycombe Astronomical Society Members (Sat 17 Nov 2007 04:29:34 PM CST)
That's a very nice image David, It shows how large M31 is is you need to use a focal reducer with a DSLR.
Chris
From: Wycombe Astronomical Society Members (Sun 18 Nov 2007 04:00:45 AM CST)
Yes the galaxy filled almost the whole frame, just a bit trimmed from right and bottom for the final image. Good luck with your new 80mm refractor. David
From: Wycombe Astronomical Society Members (Thu 27 Dec 2007 01:39:41 PM CST)
I particularly like this one. To get 2 minute exposures on the Canon 400D did you use "bulb"?

Jan
From: Wycombe Astronomical Society Members (Thu 27 Dec 2007 01:41:01 PM CST)
Me again! I meant to ask what is an ALP filter please.

Jan
From: Wycombe Astronomical Society Members (Tue 01 Jan 2008 02:49:42 PM CST)
Hi Jan, I have posted an answer to your queries in the forum under ‘Astronomy Chat’.
David

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