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Endolf

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    42
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About Endolf

  • Rank
    Nebula

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  • Location
    UK
  1. I finally made a decisions, the skywatcher 200 pds, then skywatcher shutdown their uk warehouse. So I did some more digging and ended up ordering a TS Optics 200/1000 OTA. I've also ordered myself the baader MPCC mkIII and a bahtinov mask for it. Should all be here for Monday. My IDAS LP D2 EOS filter should arrive tomorrow too. I'm sure it will be cloudy for a few weeks now. Sorry. Hopefully still be able to order the Esprit 100 for nebula season
  2. I really hope we get some clear nights soon, these rubbish nights get expensive looking at new gear.....
  3. Yeah, not been out much, but I've also had to learn how to process as well, so I've been busy. I've also been looking at upgrades......
  4. It's amazing how much you can hide when you scale an image down to 960x540
  5. Just under 2 months in to this fantastic hobby and I think I'm making some progress. A quick montage of 4 of the images I'm not too ashamed of Loads to learn still of course
  6. Doing more research again, this time looking at the focal length and pixel sizes (using https://astronomy.tools/calculators/ccd_suitability). My skies are not always good seeing, and I can see from that tool that 0.67"/pixel is the minimum for good seeing, but 1.33"/pixel for poor seeing. So going back to the average of 1"/pixel, I end up with a maximum FL of just over 1000mm, the GSO RC 8 has a FL of 1624, so I'd need a reducer, which whilst giving me a reasonable pixel ratio, means I'd need longer exposures to gather the same number of photons at the camera. Looking at other ~1000mm scopes, the explorer 200pds with the baader corrector seems to fit the bill. I wonder how long this thought will last.....
  7. I couldn't help myself, been looking at scopes again , I'm thinking something like the Esprit 100 for the winter season for wide field, but for now, for galaxy season, something with a much longer FL is the order. I came across the Omegon RC, either the 154/1370 or the 203/1624, I like the look of the FL for both of these. I've not read much about Omegon, I know Tim from AstroAddict has a couple of their APOs. I've done the maths as with a Canon 600D the pixel size is a little large, but binning should help that?. Anyone got anything good or bad to say about Omegon and their RCs, or RCs in general? Thanks
  8. Nice, I'll have to take a look at FITSwork.
  9. Hi I'm new to photo processing and astrophotography in general. I've been playing around with ASTAP for stacking and was able to get something ok. I've now taken a look at Astro Pixel Processor. I've managed to get a passable image of M81/82 and M101, I'm now having a go and reprocessing some of my earlier images I did in ASTAP. I've got an image of M42 that I've processed with it. In ASTAP the colours were correct, it was just very dim in it's native FITS result. I was able to do a couple of sets of level adjustment, one that got the nebula details and one that darker that showed the details in the core. I could then blend the images in GIMP, sort of manual HDR. I've got APP to process the image now, which seems to show a lot more detail. If I save the auto stretched version in APP I get an image with the detail but a blow out core, if I save the non stretched version I am having troubles in GIMP as the colours are off. I'm not familiar enough with photo processing or GIMP to be able to adjust the colours, I've tried adjusting the levels, but can never get a neutral look. I've attached some photos that show the issue, any advice or links to tutorials would be greatly appreciated. Thanks
  10. Good job, I'm only on about my 6th imaging session myself, you can't beat that feeling the when you start seeing the subs come in and can actually see these things, objects you've seen so many times, but this time, it's your own image, of an object thousands of light years away, I too picked M81/82 as my first galaxy target. Might have to try the Bubble and Cats eye's and compare results
  11. Hi I think I've identified why when I collimate my reflector it all looks ok, but the images don't.... Given that it's an old reflector, with only a 1.25" focuser and I'm mostly doing astrophotography, I really don't want to spend much money on trying to fix this scope, but before I give up on it, any suggestions as to what I might be able to do to improve the situation? When moving the focuser with the pinion it all feels tight, so I'm guessing it's just the tube not filling the hole? collimation-issue-outside.mp4 collimation-issue-inside.mp4
  12. I managed to acquire another 3 hours on M81 on Sunday evening, I'm also giving Astro Pixel Processor a try. This is now 4 hours integrated time, now with flats, darks, darkflats and bias calibration frames. There is still some noise in the image, but with an uncooled, unmodified DSLR with no filters in a bortle 6 sky, I'm not too upset with it
  13. I decided not to do the upgrade right now. Instead I've put some money in to a guide scope/camera for some auto guiding, a light pollution filter for my DSLR and a cheshire collimation tool. Assuming I can improve the image on my existing scope, i'll probably look at a ~400mm focal length triplet in time for the winter nebula season :).
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