Astrophotography / I tried a few different stacking programs with stacks of a dozen images. The stacked results are almost identical to the individual shots. Do you need to take a LOT of images to tease out nebulous details? I'm just not seeing any major differences and figured I'm not taking enough frames to make it work. I can make out the objects but the stacking doesn't seem to make a difference.
Would a single exposure with tracking offer better results?
(not my pic - but pic related)
>>3119593
Stacking is about noise control, not exposure. If you don't catch it in every frame it won't show up in the stacked image.
You have to do the proper exposure first for every frame and then stack them and then do the stretching in post.
>>3119593
Mine from this morning :) Dumbbell Nebula.
Frames: 20x60 Seconds Light Frames, 35 Bias Frames, 20 Dark Frames.
Stacked in Deep Sky Stacker, Processed in PixInsight 1.8 and Photoshop CS6
[EXIF data available. Click here to show/hide.]
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>>3120241
I'm still learning but what about RegiStax?
I tried some milky way shots with DSS and 50 frames but they turned out like shit (untracked)
>>3120293
Forgot pic
>>3120294
Is this how my skies would look if I didn't live in such a light polluted shithole?
Or would it be a much less dazzling sight in person
>>3120532
Yeah it doesn't look like that in person, but once your eyes are fully adapted to the dark, you can see your shadow. The pic isn't perfect as there was a bit of light pollution/airglow, but the first thing I noticed is that the stars don't "twinkle" because of moisture or lack of. Also we could easily see the ISS.
>>3120294
That's a really good image of the MilkyWay I'd be happy to settle for something like that where I live I tried to do a shot of the Milkyway problem is I can't collect enough of a Exposure to get anything like that. I'd need to mount my DSLR on the top of my OTA to be able to get at least a 60 sec exposure.
Was that a single shot or what was your settings ?
[EXIF data available. Click here to show/hide.]
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>>3120832
iso 6400
F 2
15 seconds
24mm
single shot
>>3120532
I can remember driving in the middle of nowhere Oklahoma and sleeping for a few hours on the side of a rural road. The skies were so intense there. I live in rural Missouri and so have a better view of the Milky Way than most but something about that time in Oklahoma stuck out. Maybe it's the lower humility there.
>>3120930
Eh fuck yeah see that's what I thought people are using a camera lens to do the picture I got a kit lens and it sucks either that or I'm using it wrong I have a Canon 450D and a EFS 18-55mm kit lens.
I don't know how to use a DSLR for good pictures max ISO is 1600 for the Canon 450d not sure if I should have it at 55 or 18mm when taking the picture.
I'm pretty sure I've tried both maybe not that I astro-modded my DSLR maybe it might work maybe not doubt it.
>>3121323
Have it at 18mm, do an exposure of about 25 sec with iso 1600, the wider the lens, the longer the exposure you can get away with without star trails, here's a pic I got a month ago in the badlands
[EXIF data available. Click here to show/hide.]
Camera-Specific Properties: Equipment Make NIKON CORPORATION Camera Model NIKON D5100 Camera Software Adobe Photoshop CC 2015 (Windows) Maximum Lens Aperture f/2.8 Sensing Method One-Chip Color Area Color Filter Array Pattern 858 Focal Length (35mm Equiv) 25 mm Image-Specific Properties: Image Width 4928 Image Height 3264 Number of Bits Per Component 8, 8, 8 Pixel Composition RGB Image Orientation Top, Left-Hand Horizontal Resolution 243 dpi Vertical Resolution 243 dpi Image Created 2017:07:10 21:46:37 Exposure Time 30 sec F-Number f/2.8 Exposure Program Manual ISO Speed Rating 1600 Lens Aperture f/2.8 Exposure Bias 0 EV Metering Mode Pattern Light Source Unknown Flash No Flash Focal Length 17.00 mm Color Space Information Uncalibrated Image Width 4930 Image Height 3223 Rendering Normal Exposure Mode Manual White Balance Auto Scene Capture Type Standard Gain Control High Gain Up Contrast Normal Saturation Normal Sharpness Normal Subject Distance Range Unknown
I need help, I just bought a nikon d7100 for 400$ CAN cause it was a good deal. But now I Have a d5100 and a d7100. I can only keep one but which one would be better at shooting the milky way? Ik my d5100 is good, and ik the 7100 is newer but I read that a different company makes that sensor and 24mp isn't always good when it comes to low light. Thoughts?
>>3121451
Keep the D7100 it's far better in the long run
You don't need a tracker per-se, but definitely a good idea. Attached is 10x stacked and processed 15sec frames with a Canon 6D and EF 50mm f/1.8. Fairly heavily processed in PS, but would still get better results with tracking & longer expos.
[EXIF data available. Click here to show/hide.]
Camera-Specific Properties: Equipment Make Canon Camera Model Canon EOS 6D Camera Software Adobe Photoshop CC 2017 (Windows) Maximum Lens Aperture f/1.8 Image-Specific Properties: Image Width 2717 Image Height 1800 Number of Bits Per Component 8, 8, 8 Pixel Composition RGB Image Orientation Top, Left-Hand Horizontal Resolution 240 dpi Vertical Resolution 240 dpi Image Created 2017:07:08 00:06:28 Exposure Time 10 sec F-Number f/3.2 Exposure Program Manual ISO Speed Rating 5000 Lens Aperture f/3.2 Exposure Bias 0 EV Metering Mode Pattern Flash No Flash, Compulsory Focal Length 50.00 mm Color Space Information sRGB Image Width 1272 Image Height 1920 Rendering Normal Exposure Mode Manual White Balance Manual Scene Capture Type Standard
>>3121480
Make that 10sec frames actually.
>>3121480
>15s
Trails are visible in your photo. I think you can do 10s at most with a 50mm.
>>3121482
Is actually coma, but yes, 10 sec was used as above. The 50mm 1.8 is definitely not a great choice for astro, works okay within the limits though.
>>3121323
At 18mm with a cropped sensor, the max time you should go is about 20 seconds before you get star trailing. The problem with the kit lens is the minimum F stop is about 3.5, so in this instance, you would need an ISO setting of 3200. The other option is to get a star tracker so you can go with a longer time, but they are about $400.
I used a Rokinon 24mm F1.4 on a Canon 6d, but found out that if I go to F2 the shots were sharper. Also I purposely over exposed by cranking up the ISO to get better detail and then lowering exposure in Light room.
Astro modding is an option, but not with your camera, and then you are limited to just astro pics with it.
For some reason after I astro-modded my Canon 450d I can't get the auto-focus to work unless im using the auto focus wrong I thought you lightly hold the shutter button to get the lens to auto focus I have the lens set to Auto Focus but when I lightly touch the shutter button it doesn't do anything if I push the button all the down then it snaps a picture.
>>3123784
is there a switch on your lens that says af/mf? make sure its set to af if so
>>3123784
You don't need AF for astro-photography.
Welcome to the world of manual focus.
>>3123821
Yes, and it's set to AF but as I said when I lightly press the shutter button it doesn't do anything.
>>3124005
I can't figure out how to manual focus I roll the lens all the way left and then all the way right however at 18mm it's out of focus but some where in the middle I can get focus but can't get focus at 18mm for some reason.
>>3124076
As I understand your post, even in bright light you can't manually focus at infinity with the lens set to manual?
>>3121480
I was going to sell my Sigma 50mm 1.4 art but maybe I'll try this with my 6D. Cool pic but how do you get the website to display "[EXIF data available. Click here to show/hide.]" Pics taken with my 6D don't show that.
>>3124412
I have autism bad I just found out that I've been using the zoom not the focus ring I never their were two rings on the lens one is for focus the other is the Zoom lmao!
http://www.clarkvision.com/articles/color.of.the.night.sky/
Posting this here because it is relevant. Just found this guys webpage and holy shit the immense amount of information just blows my mind. If it was in a book form I would buy it right away.