Intervalometer for A6400 +30s exposure

Started 3 months ago | Discussions thread
hha Contributing Member • Posts: 671
Re: Intervalometer for A6400 +30s exposure

danny006 wrote:

Tristimulus wrote:

Just stack 30 sec exposures.

Does that mean with 30s you don’t need autoguiding?

I use 1 minute subs  with an IOptron Skytacker and up to 200 mm focal length. Since my polar alignment is not perfect, there are trails during one minute, but they are less than one pixel long. There is also the 24 arcsec worm error of the IOptron ( it has a 9 minute period)  and structral flexing of your setup as you get into several hour exposures. Sequator takes care of all of this by digitally registering all images in a sequence to the image at the center of the sequence. 240 images take about 5 minutes to register on my laptop. You can think of it as a digital autoguider, as opposed to a mechanical/optical autoguider.



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