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Re: [OM] mirror lockup in astrophotography

Subject: Re: [OM] mirror lockup in astrophotography
From: "Terry and Tracey" <foxcroft@xxxxxxxxxxxxxxxxxxxxxx>
Date: Tue, 11 Jan 2000 19:38:17 +1100
> =========================
> I use Mirror Lock-up when photographing through my telescope. This
> minimizes vibrations. Same principle applies when using long
> telephoto-lenses.
> =========================
>
> That's some incredibly fast film if mirror lockup has an effect on
> shots through a telescope..
>
snip

> You'd need mirror lockup for shots of the moon, but stars are much too
> dim to matter unless you are using super speed film.
>

I disagree totally. I've seen shots on telescopes with an intial vibration
caused by the mirror. A second shot with mirror lockup does not show this.

Foxy


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