ngc 6188 The Fighting Dragons of Ara ( NGC 6188 ) - Bright Nebula
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By Daniel Valencia
Hi Guys!
My name is Daniel and I am from Ecuador, I love astronomy and the secrets our universe holds. I love Jupiter, our big brother, so I opened this forum to talk about facts, secrets, theories, etc. About our gas giant!
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By guydive
Hey all,
I'm considering the 250PDS. The main use is visual, and the second is EAA (I currently use a zwo183mm).
What I'm hesitant about is the primary focus. since It's mostly for visual, I'm wondering on how much back focus it has compared to the standard Skywatcher 10" dobsonians? with the standard dobsonias with the same optics and focuser you already need an extension tube for most eyepieces...
Also, there's probably a "bigger" obstruction (bigger shadow on primary)?
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By Pincs
Hi I've got an 8" dobsonian and I just got a dslr to connect to it. Obviously there's no tracking so what kind of things can I capture. Will I be able to do dso and planets?
Thanks
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By MarsG76
The Witch Head Nebula, aka IC2118 & NGC1909 in the constellation Orion, near the star Rigel.
This object is very large in the sky, being 3°×1°, so I had to use my smallest telescope to deliver the wide angle and low power needed to image all of the "Witches" profile.
This is a very difficult object to image using a DSLR, and a dark sky is needed to capture it in it's full glory. I thought that I'd give it a go with my DSLR, and see what I end up with... I'm happy that the end result in my image shows the shape of the "Witch Head" but I think that the overall image will not be winning any awards.
This image has been exposed through a 80mm refractor @ 500mm FL, using my cooled and full spectrum modded DSLR for a total exposure time of 12 hours and 34 minutes, in a semi-rural, Bortle 5 (maybe 4) sky.
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By MarsG76
I managed to bag another object, this time the reflection Nebula M78 in the constellation Orion.
I was planning to capture natural color subs than add some HAlpha and OIII narrowband data to emphesize the image details and reveal deeper matter, but after processing the OSC/RGB subs, I decided that adding the narrowband data is not necessary.
This image was taken across two nights (juggling clouds), 6th and 11th February, and I managed to capture 3 hours and 18 minutes worth of useful subs (21x60 sec, 19x120 sec, 18x180 and 17 x 300 second subs).
The telescope used was a 80mm refractor, at 500mm FL using my full spectrum modded and cooled 40D DSLR.
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