Thanks Jostein, also Malcolm, and all who looked.
Jostein wrote:
Well done you.
The Orion season starts a little later up here. It's a bit low on the
horizon yet, with light pollution and heat shimmer getting in the way.
To make up for it, you have a much better Aurora season than we do.
Your results are on par with what I've got from single exposures with
the Sigma 500/4.5. Proper focusing seems to be the limiting factor
rather than actual MTF resolution.
Yes, focusing was a real challenge. If I remember to bring my green
laser, I can aim that at a distant point and have something to focus on.
I probably should have tried focusing on Sirius, it was a lot brighter.
I think it's about time you start
looking into multiple exposures and astrophoto stacking.
I tried that once and didn't have any luck with the software I used, it
wasn't significantly better than what I got with one frame. I'm curious
if anybody has stacking software they like that runs on macs (or linux)
Then there's the detail that no matter what I do, someone with good
equipment (up to and including the hubble) is going to be able to do a
lot better, and there isn't a lot of room for artistic expression. It's
not that I wouldn't enjoy going down the astrophotography rabbit hole,
but when it comes to hobbies I could throw time and money down, those
rabbit holes start looking like Watership downs.
I am amused to note that the designation for Orion is M42.
Jostein
Den 04.12.2016 12.57, skrev Larry Colen:
Inspired by actually being able to see it in photos with the FA77 I had
a go at photographing the Orion nebula.
Here it is with the bigma, 500mm, wide open at f/6.7, ISO 800,
astrotracer only seems to work up to about 10 seconds at 500mm. However,
that beats the rule of 600 by a factor of 8.
https://www.flickr.com/photos/ellarsee/31373955206/in/album-72157675801391901/
I blew it, I meant to post the fluidr link for the exif data:
http://www.fluidr.com/photos/ellarsee/sets/72157675801391901
For those that are interested in my experimentation, here's the full
album. It was cloudy when I got to the top of bear creek, so the first
few are a bit artsy fartsy. Using the fluidr link so you can see the
exif. The photos are cropped pretty tight:
https://www.flickr.com/photos/ellarsee/sets/72157675801391901
--
Larry Colen [email protected] (postbox on min4est) http://red4est.com/lrc
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