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By Ryan Adams
I recently posted a thread getting ideas for what scope and mount I should get for beginner astrophotography.
After researching on my own and getting thoughts from others on scopes and mounts here is what I have come up with.
Mount - Skywatcher EQ5 GOTO
Scope - Sky-Satcher Explorer 130P-DS
Guide Scope - Skywatcher Evoguide ED50
Guide Camera - ZWO ASI120MM Mini
DSLR - Canon 350D
I understand that the camera I am using is fairly old but it is an old DSLR that I have at home and it saves me money on buying a new camera. All in all this setup comes to just over £1000; I just wanted to people's get thoughts on this set up and if it can be improved in any way without stretching the budget by more than £100. Also I wanted to know whether any of the equipment I have chosen isn't great.
Thanks in advance,
I am new to astrophotography and of course started by taking a photo of the moon (as attached) using my Canon EOS500D camera - 1/250 exposure time, 800ISO. I used my celestron 127EQ telescope with a adapter for the camera of course. I used no eyepiece.
However, i find that it is slightly blurred, and upon taking pictures of nearby stars, i also found them to be blurred, even with a high exposure time. am i doing anything wrong at all or is this simply because of my setup?
So I had this problem where if I put my finder scope on my OTA, and the finder scope is around 135 degrees from the mounting part of the scope. This made my DEC axis always stay leveled but never stay in any position I put it in (if I turned my RA axis to the balancing position, then the DEC axis to balancing position and moved the DEC axis anywhere, it would go back to horizontal or balancing position).
Any help would be nice
I recently scored a great deal on facebook marketplace and bought Skywatcher Skymax 180 mm Maksutov-Cassegrain Telescope (f/15) with EQ6R-pro mount. I understand that long focal length telescopes are more suitable for planetary imaging. However, as I am tight on budget, I would like to use the same scope for deep-sky astrophotography. I have Canon Rebel T5 DSLR camera that I am using for taking images. Without autoguiding and a decent polar alignment, I can get ~30 seconds long shots without any star trailing, but that's not sufficient for imaging objects like M51. I would like to be able to integrate longer, say few minutes, thus would like to purchase an autoguider. Here are some specific questions I have.
1). The telescope comes with an 8 x 50 straight-through finder. If I were to use it as a guidescope, what type of image integration time can I expect? Has anyone done autoguiding for f/15 scope with an 8x50 or other finderscopes?
2). If the integration time will be an issue with the 8x50 finder scope, I am open to purchasing an off-axis-guider. However, considering the narrow field-of-view of Mak-180 telescope, I am concerned about not having enough photons from guidestar for autoguiding. For instance, with my DSLR camera, I need to integrate 20-30 seconds to see the nearby stars in M51. What type of OAG and camera would I need to autoguide with my scope? Are there affordable cameras (~$200) that would do the job for me? Would ASI120MM Mini Monochrome (~$150) do the job? What about OAG?
I plan to use phd2 software for autoguiding rather than relying on the build-in guide port on the mount. Instead of integrating for hours, I am planning to do DSS stacking of few mintues long multiple shots, hopefully this will put less strict requirements on the autoguider.
In case this information is relevant: with my current setup, I have no issue pointing my scope to a desired deep-sky object, track the object within the field-of-view of my DSLR camera for hours using the mechnical tracking of the EQ6 mount. For instance following is a single raw image of Ring nebula taken with 30 seconds shot. But it is not enough for generating high-quality images.
Thank you in advance for your help.