CCD vs Film? Lots of time vs no patience? Alright, this is your place to discuss all the astrophotography what's and what's not. You can discuss about techniques, accessories, cameras, whatever....just make sure you also post some nice photos here too!
Taken with Pentax k5 16mm f2.8 at ISO 6400 and 25 seconds exposure unguided.
As commented by Gary over at the other wrongly posted thread, this is slightly overly processed which i guess should be true. After going back to my comp screen found that using ISO 6400 really blurred out the details with high noise, so did some noise reduction and added a few layers of clarity to bring out the milky way.
Any expert can give some advise on how to take this better at low ISO? Stacking a few under exposured shots will work?
Overall, i enjoyed the trip pretty much, likely to go again some time in the future.
Hi Fireemblem, I think your ISO might be a little too high as the sensitivity gets up, it picks up everything as well.
Usually it works well on ISO800, for more modern dslr, iso 1600 seems to be good enough.
Not too noisy and still picks up good details.
Below is an image from a 500D with the stock lens 18-55mm @ 18mm, unmod, unguilded, on a normal tripod 30 secs ISO 1600.
Not really an expert in advising but its good to start somewhere
My first attempt for milky way was at Kahang with this heavily processed image of the milky.
Basically i wasn't sure how to use photoshop that time and just anyhow do it. hahahaha
this is a 30 secs shot with the same lens as well.
And this is using Kelvin's Sigma fisheye lens. Forgotten at which focal length. Think its 10mm or 8mm.
5mins x 3 on a GM8 piggybacked to a FSQ85 with no auto guilding.
results will improve as you keep doing it more often
Oh ok thanks, but just curious u guys have all those sophisticated mount etc that can do guided, so why not do a shot with like iso 200 with 12.5 minutes exposure or iso 100/25 mins to get a sharp photo with as much details as well as the least possible noise??
The longer your camera exposes, the more thermal noise it is going to build up. So for un-cooled dslr its recommended to stay within the range of 5 mins or so per exposure. Of course you can stack them for a final image.
So far the experts have done experiments and concluded that 800 is usually the benchmark for iso in astrophotography. Kelvin has tried 400 on his last trip and maybe u can seek his advice on how was the response.
Join us more for mersing trip lol
its the most easy way to learn and practice at the same time.
I done it that way last year and 2 of the sifus helped alot.
I think your shots here are impressive (processed and unprocessed).
If I'd like to learn a thing or two, say watch how y'all mount your camera on the telescope, does anyone do this in Singapore? I don't own a telescope. I only own a DLSR with a decent tripod, and remote trigger.
elnie wrote:I think your shots here are impressive (processed and unprocessed).
If I'd like to learn a thing or two, say watch how y'all mount your camera on the telescope, does anyone do this in Singapore? I don't own a telescope. I only own a DLSR with a decent tripod, and remote trigger.
"The importance of a telescope is not how big it is, how well made it is.
It is how many people, less fortunate than you, got to look through it."
-- John Dobson.
LOL, Gary.
Dog will make her appearance as soon as her dog walker clears her (I mean her children's) school exams. Bet dog is looking forward to the next stargazing outing, she sure enjoyed all the attention. Tks for the links.
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![[smilie=happy.gif]](./images/smilies/happy.gif "happy")
