DSLR used for astrophotography???
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Re: DSLR used for astrophotography???
It looks out of focus, and some movement perhaps. That was shot at night? Neighbors have bright lights on?
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Re: DSLR used for astrophotography???
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Re: DSLR used for astrophotography???
metastable wrote: ↑Sat Dec 28, 2019 10:39 am
shooting in raw brings out a lot of detail:
same image “in camera”:
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Re: DSLR used for astrophotography???
UlteriorModem wrote: ↑Fri Jan 10, 2020 4:43 pm Were you down a well when you took that? Whats with all the vigenetting around the corners?
It looks out of focus, and some movement perhaps. That was shot at night? Neighbors have bright lights on?
In my driveway, shooting up between oak trees. Near full moon, nearby Street lamp.
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Re: DSLR used for astrophotography???
metastable wrote: ↑Fri Jan 10, 2020 4:50 pm also raw processing is key for a good result... i posted the settings i used in an earlier post, here is the “in camera” vs “processed” look...
metastable wrote: ↑Sat Dec 28, 2019 10:39 am
shooting in raw brings out a lot of detail:
same image “in camera”:
Is this just one photo or stacked?
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Re: DSLR used for astrophotography???
How important is the sensor size: IE DX or FX and why?
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Re: DSLR used for astrophotography???
when it came first came out, the nikon d800 I use had by far the best low noise dynamic range of any
https://www.nikonusa.com/en/nikon-produ ... /d850.html
but recently sony has been making inroads into the digital camera market with their mirrorless bodies...
...so if you have $2400 to spend on body alone, my understanding is this one (Sony α7S II) has the best dynamic range that's available right now, but the tradeoff is it has "only" 12megapixels...
https://www.sony.com/electronics/interc ... /ilce-7sm2
if resolution is what you're after this one (Sony α7R IV) will give you 61 megapixels for $3500...
https://www.sony.com/electronics/interc ... /ilce-7rm4
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Re: DSLR used for astrophotography???
and this one, filmed entirely in moonlight, apparently:
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Re: DSLR used for astrophotography???
Yes it is significantly out of focus, and you have a hair or string of dust on the AA filter in front of the sensor.
Old cameras like this usually don't have live view referred to in another post.
You will need to focus by trial and error inspecting the previews at magnification to determine correct focus.
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Re: DSLR used for astrophotography???
that's a very bright image, i can see about 5 diffraction circles /airy disc , looks like you're out of focus by a mile or km for us metric users.
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
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Re: DSLR used for astrophotography???
Thanks - got better I think with these..... Keep in mind - no live view - only 6mpOzEclipse wrote: ↑Fri Jan 10, 2020 11:06 pm Hi,
Yes it is significantly out of focus, and you have a hair or string of dust on the AA filter in front of the sensor.
Old cameras like this usually don't have live view referred to in another post.
You will need to focus by trial and error inspecting the previews at magnification to determine correct focus.
Joe
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Re: DSLR used for astrophotography???
Yes much better but still not focused.lsintampa wrote: ↑Sun Jan 12, 2020 3:42 amThanks - got better I think with these..... Keep in mind - no live view - only 6mpOzEclipse wrote: ↑Fri Jan 10, 2020 11:06 pm Hi,
Yes it is significantly out of focus, and you have a hair or string of dust on the AA filter in front of the sensor.
Old cameras like this usually don't have live view referred to in another post.
You will need to focus by trial and error inspecting the previews at magnification to determine correct focus.
JoeDSLr - and just a start for me..... just trying to see if this is worth chasing - the D50 may not be the best camera for what I'm trying to do - but as I originally stated - for me this is a proof of concept exercise....
DSC_0035.jpg
DSC_0034.jpg
You just have to focus by trial and error. Push the ISO up, the
Joe
Amateur astronomer since 1978...................Web site : http://joe-cali.com/
Scopes: ATM 18" Dob, Vixen VC200L, ATM 6"f7, Stellarvue 102ED, Saxon ED80, WO M70 ED, Orion 102 Maksutov, ST80.
Mounts: Takahashi EM-200, iOptron iEQ45, Push dobsonian with Nexus DSC, three homemade EQ's.
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Cameras : Pentax K1, K5, K01, K10D / VIDEO CAMS : TacosBD, Lihmsec.
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Re: DSLR used for astrophotography???
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Re: DSLR used for astrophotography???
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
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Re: DSLR used for astrophotography???
A lot of these newer cameras are improving elsewhere in their designs , like image 5 axis image stabilization which is great and could aid in longer exposures for astrophotography without tracking,faster autofocus for sports/bird photography ectt. . but for a dedicated astro camera i think top of the line is a bit of a waste $$ for just astrophotography due to price/performance,they seem to excel in single image nightscape but There's still plenty of cheapermetastable wrote: ↑Fri Jan 10, 2020 10:00 pm based on my current understanding of camera bodies, for astrophotography the low noise dynamic range of the sensor is the most important factor (allowing you to bump up the ISO/sensitivity without adding too much noise).
when it came first came out, the nikon d800 I use had by far the best low noise dynamic range of any dslr, and a very respectable 36 megapixels. the current version (nikon d850) will set you back $3000 and has 45 megapixels.
https://www.nikonusa.com/en/nikon-produ ... /d850.html
but recently sony has been making inroads into the digital camera market with their mirrorless bodies...
...so if you have $2400 to spend on body alone, my understanding is this one (Sony α7S II) has the best dynamic range that's available right now, but the tradeoff is it has "only" 12megapixels...
https://www.sony.com/electronics/interc ... /ilce-7sm2
if resolution is what you're after this one (Sony α7R IV) will give you 61 megapixels for $3500...
https://www.sony.com/electronics/interc ... /ilce-7rm4
dedicated Astronomy cameras are slowing catching up, zwo is starting to introduced full frame 62mp 16 bit 80% q.e cooled cameras at similar price of a modern new gen
cameras : asi 1600mm-c/asi1600mm-c,asi120mc,prostar lp guidecam, nikkon d60, sony a7,asi 290 mm
mounts : eq6 pro/eq8/mesu 200 v2
filters : 2'' astronomik lp/badder lrgb h-a,sII,oIII,h-b,Baader Solar Continuum, chroma 3nm ha,sii,oiii,nii,rgb,lowglow,uv/ir,Thousand Oaks Solar Filter,1.25'' #47 violet,pro planet 742 ir,pro planet 807 ir,pro planet 642 bp ir.
extras : skywatcher f4 aplanatic cc, Baader MPCC MKIII Coma Corrector,Orion Field Flattener,zwo 1.25''adc.starlight maxi 2" 9x filter wheel,tele vue 2x barlow .
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Re: DSLR used for astrophotography???
ARock wrote: ↑Sun Jan 12, 2020 5:07 am It would be great if you could take and view pictures from a laptop, to catch focus problems. Unfortunately most windows applications do not seem to support the D50. I had similar problems with my D70s and finally ended up using gphoto2 (free) on Linux. But you need to be familiar with Linux and have a Linux laptop or a raspberry pi.
Same with my Sony Alpha A350. So I bought a Canon 600D from Ebay for £180. Second hand but a good price for what it is and it has the capability of connecting to a pc for accurate focussing (with a Bahtinov mask) and ease of image capture control.
Regards
Graeme
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Re: DSLR used for astrophotography???
I could be wrong, but without live view, it will be nearly impossible to focus accurately. You can’t zoom in to use a batinov mask. Even if DigicamControl supports the camera, without the lv camera function, you still have the focus issue.
When shooting stars, “close” focus isn’t good enough.
Used dlsr’s that work well for astro ave available for very low prices on ebay. I bought my Nikon D5300 for $250 on ebay with less than 2k shutter clicks. I have seen Canon t3i’s for less than $200.
Just a thought.
Jim
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Re: DSLR used for astrophotography???
Anyway, use a mask and be patient, eventually, you'll get a focused image.
Cheers,
JT
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Re: DSLR used for astrophotography???
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