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Post by howie1 on May 17, 2016 6:07:24 GMT
Finally some clears nights and the other night (after about 3 nights of cruising around the skies), I thought I'd better save some images and post them up. No darks used, unguided 200P newt on HEQ5 PRO. Of note is I often use Windows Photo Galley Edit to stretch the stacked AstroToaster image. It brings a bit more out in the images and the noise tool and sharpen tool are quite effective. ISO, exp time, number stacked details are in the image descriptions within the album ... link below. I usually do high ISO and short exposure but its been so nice I went 30 sec to 60 sec for a bit of fun and to enjoy the cool 18C evenings (still 28C in the day here though!) www.flickr.com/photos/9440349@N08/albums/72157668506554785Cheers.
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Post by ChrisV on May 17, 2016 11:37:39 GMT
Nice shots, nice Markarian Chain. It was even 27C in Sydney today with only a few weeks till winter !
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Post by Dragon Man on May 17, 2016 12:05:54 GMT
Well done Howie. Back when I used my Canon 350d DSLR for Astrophotography I did all my captures at 800 iso. Still do when I use the Canon. I didn't do a whole lot with them either. Between 3 and 7 frames stacked in Registax 3, then Brightness, Contrast, Levels and Curves done in PhotoShop CS5. www.flickr.com/photos/ken_james/albums/72157645622930223
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Post by howie1 on May 17, 2016 23:40:24 GMT
Thanks Chris and Ken. It was really good to be able to get out again.
Ken, the sagittarius star field in your shots is something I've not looked at so thanks for that ... must throw the ED80 on and take a gander at that sucker. Amazing shot!
cheers
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Post by Rick in NWArk on May 18, 2016 13:25:01 GMT
Great shots, Howie, thanks for your tips... I'll be getting into AstroToaster as soon as I can get a couple of cloudless nights.
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Post by Dragon Man on May 18, 2016 14:08:54 GMT
Thanks Chris and Ken. It was really good to be able to get out again. Ken, the sagittarius star field in your shots is something I've not looked at so thanks for that ... must throw the ED80 on and take a gander at that sucker. Amazing shot! cheers Howie, the really dense image of mine of the Sagittarius star cloud is centred on planetary nebula NGC 6565, and that isn't even the densest part of the Sagittarius star cloud!
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Post by howie1 on May 18, 2016 20:38:16 GMT
Thanks Rick. Happy to answer any questions on AT. Cheers.
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Post by davy on May 18, 2016 21:16:07 GMT
Nice one howie,,I need help too,I switched it on and ho ho, what the hell am I doing now..lol.can we start a thread :-)
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Post by howie1 on May 19, 2016 3:14:50 GMT
Sure Davy ... I'll post a starter over on the Software>AstroToaster part of the forum.
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Post by ChrisV on Jun 2, 2016 4:11:14 GMT
So why were you choosing different iso values ? Were some better for some things than others, or were you just trying lower iso to see if it was okay.
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Post by howie1 on Jun 2, 2016 7:06:21 GMT
Yes Chris, correct. I'm used to setting ISO6400 and just shooting anywhere from 2 to 10 seconds then letting 5 to 10 stack. End of story. So wanted to test in-field going longer to see if there really is more detail. So I found the longer exposures saturated and 'blew out' much more than shorter exposures, so I had to fiddle with ISO a lot more depending on the subject. To be honest, I have friends who shoot 5 minute subs x 10 at ISO800 and I realised I must have zero talent in processing those lengths. Cos the shots I tried at 3 minutes per exposure were totally over-exposed and I couldnt find the right AT adjustments to correct that. Cheers
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Post by Dragon Man on Jun 2, 2016 12:14:30 GMT
Howie, I also always use iso800 when using my DSLR for Astrophotography.
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Post by davy on Jun 2, 2016 12:19:20 GMT
Ive been doing same as howie,, test shots reducing iso and changing shutter speed to compensate using byeos..these settings then get used on video capture,,reducing noise levels .
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