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By William Productions
Hello, I am an amateur astronomer that wants to get into deep-sky astrophotography. I already have a telescope which is Celestron Nexstar 127 SLT but it doesn't meet the requirements to take photos of wide field nebulaes/galaxies, (Ex: Orion Nebula, Andromeda Galaxy). I need some help on what to use and afford! It has to be under £550.
I need a 70 or 80mm optical tube, with a mount that does polar alignment and can be attached to the optical tube then I need a Canon camera that can take long exposure high ISO photos and last a filter or two to help reduce light pollution and contrast the nebula/galaxy more!
This is just for my birthday, I do not expect the best!
I just need a beginners setup.
Hi! I've recently acquired a new Astromodified Canon rebel XT and I've tried to take pictures of nebulas using it but I've noticed that there are these weird black artifacts that keep appearing in my images. Would like to know if anyone has experienced this before? Or are these dirt/dust specs on the camera, filter, and telescope glass? I've attached some of my edited and raw pictures for your reference. The black artifacts can already be seen in the raw image of the horsehead nebula and after stacking I think it got amplified. Anyway, advance thanks and I hope everyone's doing well.
Need a bit of help to narrow down what I see, I've wanted to buy a telescope a year ago but a couple of things stopped that decision.
Saw a strong bright glowing star in the cloudless sky so I picked up my old binoculars laying around. I appended three images, one what my phone saw, secondly the raw image, thirdly a star map pointing towards the object (center-ish).
I know it feels pretty laughable for s.o with an 8" GOTO + 5 yrs of experience, but maybe we can attempt to locate the object anyway ;)
So, although I had some issues with my auto guiding (which I found out afterwards) I did manage to get 9x180s exposures and 5 darks of Andromeda and give both stacking (using DSS) and processing (using GIMP).
My first attempted DSO....
I am pretty sure that people could get far more information out of the TIFF file from the stack.
Hopefully I will get another clear night soon. I am in a heavily light polluted area so I do have a clip in filter on my DSLR which I think took a lot away.
More practise needed!
So I picked up a classic... a 1970's - 80's edmund optics f6 150mm newtonian...
... like this one but mine has a different mount. It was cheap. Very good condition. The focuser is pants. The mechanics of the secondary holder is (IMHO) brilliant and apparently the primary is 1/10th wave.
But its f6 and I trhink I'd rather swap it out for a faster synta f5 mirror. . The thing is its a one shot job bc to make the f5 mirror work I will have to saw off a good few cm from the barrel of the scope.
So the question is: Is a high quality f6 mirror better than a faster synta f5 mirror for wide deep space astrophotograhy?
All comments gratefully received. 😉