LooseFur
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Askar ACL200 - First colour image (NGC7000)
LooseFur replied to Uranium235's topic in Imaging - Deep Sky
aaah ok - Yes, I am using full frame so you are not using the edges of the lens that I am... -
Askar ACL200 - First colour image (NGC7000)
LooseFur replied to Uranium235's topic in Imaging - Deep Sky
yes, same lens but I am on full frame so I am not sure how much of the lens area you are using with your camera ? Is it full frame? Though I am very new to all this so I have a lot to learn! I opened a thread about this on CN actually (https://www.cloudynights.com/topic/734450-issue-with-asymmetry/). I can't seem to get both corners sharp (top right, bottom left) -
Askar ACL200 - First colour image (NGC7000)
LooseFur replied to Uranium235's topic in Imaging - Deep Sky
cool! I am struggling to get good stars across the image of my modded canon 6D at f/4. I can get the lower left corner good, but the top right suffers, and vice versa. Painful! -
Askar ACL200 - First colour image (NGC7000)
LooseFur replied to Uranium235's topic in Imaging - Deep Sky
Very nice, what aperture did you set the lens to? -
Sadr to Crescent - Askar ACL200 first image
LooseFur replied to Uranium235's topic in Imaging - Deep Sky
How are you getting on with this lens? I have one too, on a modified Canon 6d. Not had a lot of time to test it yet but I did discover that it's tricky to get a flat field across the frame at f/4. I need more time to test though, cloud permitting of course! -
Hi all, I hope you are well. I recently got an iOptron skyguider pro and since have had only one night for testing it so far. However, I noticed some odd artefacts in an image I took (100% crop): Ignore the green stars, I am aware that Nikon have this issue but I am seeing some strange line artefacts too. 200% crop: I shot this at f/4, 100mm lens (100mm focal length, 50mm aperture) - 64 seconds, ISO 400. I have an old version of the firmware, I'll probably update it tomorrow (1.11 - current is 1.14, I think). Camera is unmodded. I'd love to know what you guys think that is all about!? PS I didn't use dark calibration, this is just one image. I did use in camera long exposure noise reduction. Are they just hot pixels? In RawTherapee they do seem to vanish when I adjust the 'hot pixel' removal slider. PPS it was windy and I am not 100% sure I nailed the polar alignment.
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thanks a lot!
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Hi Toxic, I was looking at the nik tools last night and I couldn't figure out which tool you used to increase the saturation here - it looks really good! Can you please let me know which one you used?
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Thanks for all the info guys, you are very helpful! Yep - I am an old time user of cs2, I also have many 'actions' under my belt for landscapes already. I am loathe to pay for new software that doesn't really bring anything new to the table, especially these 'pay monthly' schemes. I'd rather spend the money on new hiking boots or a new lens etc. Of course, software is a large part of imaging but as you said - you can do most things in CS2, you just need more knowledge of the tool. Anyway, I got the plugins working, I'll have a look later. Thanks again all!
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Thanks Toxic, I'll have a look at that - I hope these plugins work in Photoshop CS2 as I don't have a later version - do you know if they do?
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Thanks very much! I am just learning this really.
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I used Pix Insight in the end, yes it looks better now after the SCNR. Thanks a lot for the tips guys.
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Thanks guys, that's the sort of feedback I was hoping for - I am not an astrophotographer per se, though I am a veteran landscape photographer - what applications do I need to perform SCNR?
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silly me, my head is not screwed on - I knew this haha. I'll edit the post
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Hi all! I hope you guys are well. I was doing a night hike yesterday morning (started at midnight the previous night). I like to shoot landscapes/sunrises on mountains so usually that involves me hiking in the dark for many hours until I arrive at a predetermined location. But I've been looking to the heavens increasingly lately, mountains are usually great dark sky locations so when the head torch is off - the skies are amazing. Anyway, I got sidetracked (from the hike) because as the moon set the sky lit up with stars (and the milky way) so I opted to take a few long exposures of the Cygnus region using a nikon d810 and zeiss 35mm on a static tripod. I should note that I used the lens in 'dx' mode, even though the D810 is full frame - so 1.5 x crop factor. The lens is amazing stopped down but even at f/4 the corners are still not great for stars. f/5.6 gets you there though but without tracking, I need more light. 'dx' mode was the compromise, plus I get a bit more magnification. This is what I came up with (12 images stacked in DSS, f/3.2, 4 secs each ISO 6400). No tracking, or guiding - just a static tripod. This was my first real attempt at any sort of wide field shot. I used in camera long exposure noise reduction and took darks but did not use them in the stack (I might try the stack again later with darks). I was quite happy with it but I think there is probably some noise and I am not too sure about the colour balance, I'd like to get more accuracy with the colour balance - so tips are most welcome! Obviously there is room for improvement, more frames would have been better (but I was again 'balancing' between getting to my spot for sunrise in time vs shooting the stars - life is ALL about compromise!). Without tracking, I can't get away with much more than 4 seconds exposure either.